- United States
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
- Ukraine
- United Kingdom
- Italy
- Poland
- Australia
- Spain
- New Zealand
- France
- Germany
TOP 30 Specialized hospital care in Michigan
1646 results found
A convenient service for searching for businesses, places and services
Choice House Calls
Choice House Calls is a premier health institution located at 28800 Ryan Road in Warren, Michigan. Our dedicated team of healthcare professionals provides personalized and convenient medical services in the comfort of your own home. Whether you are in need of routine check-ups, vaccinations, or specialized treatments, we are here to cater to your unique healthcare needs. Experience top-notch medical care without the hassle of traveling to a clinic or hospital. Choose Choice House Calls for a superior healthcare experience.
Cox Claudell MD
Cox Claudell MD is a premier medical institution located at 1555 44th Street Southwest in Wyoming, Michigan, United States. Specializing in ear, nose, and throat concerns, our team of seven board-certified physicians is dedicated to providing comprehensive and compassionate care to patients of all ages. Our state-of-the-art facilities include the Hearing Center and the Sinus and Allergy Center, offering centralized services for complete care. We work closely with local hospitals and surgical centers to ensure our patients receive the best possible treatment. Our audiologists are highly trained in evaluating hearing loss and fitting hearing aids, with a focus on improving our patients' quality of life through better hearing. Contact us today to schedule an appointment and take the first step towards better hearing health.
Adult Medicine & Pediatrics at East Ann Arbor Health and Geriatrics Center
Adult Medicine & Pediatrics at East Ann Arbor Health and Geriatrics Center is a leading healthcare institution located at 4260 Plymouth Road in Ann Arbor, Michigan, United States. This facility offers comprehensive medical services for adults and children, as well as specialized care for the elderly. With a team of experienced healthcare professionals, patients can expect high-quality medical treatment and personalized care. Whether you are in need of routine check-ups, vaccinations, chronic disease management, or geriatric care, this hospital is dedicated to providing exceptional healthcare services to the community.
First Natural Wellness
First Natural Wellness is a leading health institution located at 280 Collingwood Drive in Ann Arbor, Michigan. As a trusted hospital specializing in natural wellness, we offer a wide range of services to promote overall health and well-being. Our dedicated team of healthcare professionals is committed to providing personalized care and innovative treatments to help our patients achieve optimal health. Visit us today to experience the benefits of natural wellness at its finest.
Oliver M. Ryan, DPM
Oliver M. Ryan, DPM, located at 5333 McAuley Drive in Ypsilanti, Michigan, is a reputable doctor specializing in foot and ankle surgery. Dr. Ryan is board-qualified and received his medical degree from Kent State University College of Podiatric Medicine. With a residency in podiatric surgery at Saint Mary Mercy Hospital, Dr. Ryan has a strong clinical background in diabetic limb salvage, foot and ankle trauma, wound care, sports medicine, and biomechanics. Patients can trust in Dr. Ryan's expertise and dedication to providing top-notch healthcare in the field of podiatry.
Timber Cannabis Co. Dispensary Sturgis
Timber Cannabis Co. Dispensary in Sturgis is a premier cannabis store located at 618 North Centerville Street in Sturgis, Michigan. Conveniently situated near Kirsch Municipal Airport, our dispensary serves customers from Meade County, MI, and LaGrange County, IN. Whether you're from Sturgis, Burr Oak, Nottawa, Centreville, Colon, Constantine, White Pigeon, Bronson, Mendon in Michigan, or Howe, Mongo, Shipshewana, Lagrange, Three Rivers in Indiana, we welcome you to explore our wide selection of top-tier cannabis products. Our Sturgis dispensary offers a carefully curated menu featuring premium flower, pre-rolls, edibles, vapes, concentrates, topicals, CBD items, and more. We pride ourselves on providing a diverse range of exceptional cannabis strains sourced from leading cultivators in Michigan. From popular cultivars like Blue Dream and Zookies to unique options like Gusher Mintz and GMO x Eastside, we have something for every preference.
Jude's Barbershop Byron Center
Jude's Barbershop Byron Center is a locally owned family business in Wyoming, Michigan, offering precision haircuts, straight razor neck clean-ups, scalp massages, hot towel treatments, and more. Special discounts are available for seniors. Services include beard trims, waxing, hair color, and facial treatments. Located conveniently across from Metro Hospital, Jude's Barbershop provides a relaxing and professional environment for all your hair care needs. With a focus on men's haircuts and grooming, Jude's Barbershop Byron Center is the go-to destination for a top-notch barber experience. Visit us for a classic barber shop service with a modern twist.
Bill's Barber Shop
Bill's Barber Shop is a trusted establishment located at 101 North Ann Arbor Street, Saline, Michigan. Specializing in hair care services, this health-focused institution offers top-notch barbering services for men and women alike. With a team of skilled and experienced barbers, Bill's Barber Shop provides a welcoming and comfortable atmosphere for all clients. Whether you're looking for a classic haircut, a stylish new look, or a relaxing shave, Bill's Barber Shop is the place to go for all your grooming needs. Experience the expertise and hospitality of Bill's Barber Shop today!
Merchants of Mackinac
Merchants of Mackinac is a charming store located on Main Street in the picturesque Mackinac Island, Michigan. This unique shop offers a wide variety of merchandise, including clothing, souvenirs, home decor, and gifts. Visitors can browse through the carefully curated selection of items, each reflecting the island's rich history and natural beauty. Whether you're looking for a special memento of your visit or a unique gift for someone special, Merchants of Mackinac is the perfect place to find something truly memorable. Stop by and experience the charm and hospitality of this beloved store on Mackinac Island.
Windjammer Gifts
Windjammer Gifts is a charming store located at 331 East Central Avenue in the picturesque town of Mackinaw City, Michigan. This quaint shop offers a wide range of unique and handcrafted gifts, perfect for any occasion. From locally made artisanal goods to nautical-themed decor, Windjammer Gifts has something for everyone. Step inside and browse through their carefully curated selection of items, sure to delight shoppers of all ages. Whether you're looking for a souvenir to remember your trip or a special present for a loved one, Windjammer Gifts is the place to find it. Visit them today and experience the charm and hospitality of this beloved Michigan institution.
Dr. Laura J. Kensrud, DDS
Dr. Laura J. Kensrud, DDS is a dental institution located at 2700 Baker Street in Muskegon, Michigan, United States. Serving Muskegon County residents and surrounding areas, the institution specializes in providing quality dental care. The institution is part of Hackley Community Care (HCC), which employs board-certified physicians and mid-level providers who specialize in primary medical, OB/Women’s health, mental health, dental, and school-based health programs. Dr. Laura J. Kensrud, DDS offers a range of dental services for patients of all ages, demonstrating growth, diversity, and a commitment to providing a trusted medical home for all healthcare needs. The institution is a Federal Tort Claims Act (FTCA) deemed facility that receives HHS funding and has Federal Public Health Service (PHS) deemed status. Thank you for choosing Dr. Laura J. Kensrud, DDS as your dental care provider. Please note that for life-threatening emergencies, it is recommended to go directly to a hospital emergency room.
Pediatric Dentistry and Orthodontic Specialists of Michigan
Pediatric Dentistry and Orthodontic Specialists of Michigan is a trusted institution located at 39400 Garfield Road in Clinton Township, Michigan. Specializing in pediatric dentistry and orthodontics since 1968, our practice offers a unique combination of dental services in a newly renovated and family-friendly office. Our experienced team provides traditional braces and Invisalign treatment for pediatric, adolescent, and adult patients. We also have private rooms and hospital affiliations to care for patients with special needs. Our pediatric dentists cater to children from newborn to 18 years old, while our orthodontists offer care for both children and adults, including being an Invisalign preferred provider. By filling out forms before your visit, you can help us provide prompt and courteous service. We also offer a Patient Portal for COVID screening before appointments.
Dr. Jeffrey S. Daulton
Dr. Jeffrey S. Daulton is a renowned institution located at 39400 Garfield Road in Clinton Township, Michigan, United States. Specializing in pediatric dentistry and orthodontics since 1968, our practice offers a unique combination of dental services in a newly renovated and family-friendly office. We provide traditional braces and Invisalign to patients of all ages, with a focus on pediatric, adolescent, and adult care. Our experienced team offers private rooms and hospital affiliations to cater to patients with special needs. From newborns to 18-year-olds, our pediatric dentists and orthodontists provide top-notch care, including Invisalign treatment. By filling out forms before your visit, we can ensure prompt and courteous service. Our Patient Portal also allows for easy completion of COVID screenings. Whether you have a toothache or a knocked-out tooth, we have the information to guide you in the right direction. Testimonials from our satisfied patients speak to the exceptional care and comfort provided by our staff. Book an appointment with us today for a positive and stress-free dental experience.
Dr. Deborah R. Turner, DDS
Dr. Deborah R. Turner, DDS is a pediatric dentistry and orthodontic specialist institution located at 39400 Garfield Road, Clinton Township, Michigan, United States. With a history dating back to 1968, our practice offers a unique combination of dental services in a newly renovated and family-friendly office. We provide traditional braces and Invisalign treatments to pediatric, adolescent, and adult patients, with a focus on comfort and consistency in the dental experience. Our experienced team offers private rooms and hospital affiliations to cater to patients with special needs. From newborns to 18-year-olds, our pediatric dentists provide comprehensive care, while our orthodontists treat both children and adults, including as an Invisalign preferred provider. By completing forms before your visit, we can ensure prompt and courteous service. Additionally, our Patient Portal allows for easy access to COVID screening. Whether dealing with a toothache or a knocked-out tooth, our informative resources can guide you in the right direction. Our patients have expressed high satisfaction with our services, praising the friendly staff, comfortable environment, and flexibility in appointment scheduling. Trust Dr. Deborah R. Turner, DDS for top-notch pediatric dentistry and orthodontic care.
Durango JS Trucking LLC
Durango JS Trucking LLC is a family-oriented moving company located at 3121 Chicago Drive Southwest in Grandville, Michigan. Founded in 2001, our mission is to provide exceptional service to our customers by delivering their freight on time and safely every time. With over 100 years of combined experience in the transportation industry, our team of Elite drivers and dispatchers set high standards to ensure customer satisfaction. Specializing in trucking for the construction industry, we handle various types of materials such as dump trailers, sand, gravel, asphalt, and other aggregates. In addition to construction materials, we also offer services for full truckloads of dry van, flatbed, and reefer shipments. Our goal is to earn your trust as a trucking company and provide the highest level of customer satisfaction. We are currently hiring CDL A drivers in the Grand Rapids area with competitive pay, benefits, paid holidays, bonuses, and a supportive work environment. Contact us today for a risk-free quote and let us take care of your valuable freight. Join us in supporting our local community, as we recently participated in the Parade of Lights at Helen Devos Children's Hospital in downtown Grand Rapids.
Battle Buddy Mobility Transport LLC
Battle Buddy Mobility Transport LLC is a licensed and insured Non-Emergency Medical Transport company located in Battle Creek, Michigan. We specialize in ambulatory assist and wheelchair transports, offering 24/7 curb-to-curb and door-through-door services. Our mission is to provide safe, compassionate, and reliable transportation to our customers, ensuring they reach their destination on time. We cater to a variety of clients, including hospitals, dialysis centers, doctors' offices, schools, and the general public. Our services also extend to COVID positive transportation. At Battle Buddy, we believe in the importance of not leaving anyone behind, which is why our team is comprised of CPR-certified drivers with military or healthcare backgrounds. Our founder, Kevin Hedrington, is a disabled veteran who served in the United States Marine Corps and has extensive experience in emergency medical services. We take pride in our ability to provide exceptional care and attention to our customers, ensuring their comfort and safety throughout the journey.
Reliable Medical Transportation
Reliable Medical Transportation is a trusted car rental service located at 11636 Highland Road in Hartland, Michigan, United States. Our institution specializes in providing safe and efficient transportation for medical appointments, hospital visits, and other healthcare-related needs. With a fleet of well-maintained vehicles and experienced drivers, we ensure that our clients receive reliable and comfortable transportation to and from their destinations. Trust Reliable Medical Transportation to provide the care and convenience you deserve during your medical journeys.
Transport-MD
Transport-MD is a health institution located at 28200 John R Road in Madison Heights, Michigan. Our dedicated team of medical professionals specializes in providing safe and reliable transportation services for patients in need of medical care. Whether you require transportation to and from doctor's appointments, hospital visits, or medical treatments, Transport-MD is here to ensure you arrive at your destination comfortably and on time. Our top priority is the well-being and satisfaction of our patients, and we strive to provide the highest level of care and support during every journey. Trust Transport-MD to get you where you need to go with compassion and professionalism.
Parkview Manor
Parkview Manor is a charming and elegant institution located at 710 East Main Street in Hart, Michigan. Our historic building exudes warmth and sophistication, making it the perfect venue for weddings, parties, and other special events. With its picturesque surroundings and impeccable service, Parkview Manor is sure to create unforgettable memories for you and your guests. Whether you are celebrating a milestone occasion or hosting a corporate event, our dedicated team will ensure that every detail is taken care of to perfection. Come and experience the timeless beauty and exceptional hospitality of Parkview Manor.
Home Cooked By Michelle
"Home Cooked By Michelle" is a cozy and welcoming institution located at 4584 South Straits Highway in Indian River, Michigan. Specializing in delicious home-cooked meals made with love and care, this establishment offers a variety of comforting dishes that will satisfy your cravings. From savory soups and hearty stews to mouthwatering casseroles and delectable desserts, Michelle's kitchen is sure to delight your taste buds. Stop by for a taste of homemade goodness and experience the warmth and hospitality that defines this beloved culinary gem in the heart of Michigan.
Synchrony Pharmacy
Synchrony Pharmacy, located at 4665 44th Street in Grand Rapids, Michigan, is a health institution that specializes in providing customized pharmacy solutions for residents of Senior Housing, Skilled Nursing, and other healthcare facilities. With a focus on quality and cost-containment, Synchrony Pharmacy ensures that medications are delivered on time, every time. They offer pharmacy solutions for Independent Living, Assisted Living, Memory Care, and Skilled Nursing Facilities. In addition to competitive pricing for medications, Synchrony Pharmacy also provides value-added services and operational support to help facilities maintain the highest clinical standards of care and regulatory compliance. If you are looking to start a career with a company that values diversity and upholds values of hospitality, integrity, quality, service, and education, Synchrony Pharmacy may be the perfect fit for you.
Atlas Law, PLC
Atlas Law, PLC is a premier law firm located at 598 North Mill Street in Plymouth, Michigan, United States. Specializing in estate planning, wills, trusts, probate, and more, our firm offers a unique blend of exceptional legal expertise and warm hospitality to provide each client with a personalized experience. Our dedicated Michigan attorney is committed to delivering superior legal results while building long-term relationships based on trust and reliability. At Atlas Law, we go above and beyond to ensure our clients' needs are met, offering professional and responsive service to make their lives easier. We believe that everyone should have an estate plan, and our experienced lawyer can assist you in determining the best plan for your individual circumstances. Serving clients throughout Southeastern Michigan, including Northville, Novi, Canton, and Farmington, we provide tailored legal solutions to protect your assets and ensure your final wishes are carried out effectively.
Viviano Flower Shop
Viviano Flower Shop is a family-owned florist located at 49970 Gratiot Avenue, New Baltimore, Michigan. With five retail locations in the Metro Detroit area, we have been providing beautiful fresh flowers, plants, and gifts since 1937. Our online store offers a wide range of popular flowers, plants, and gifts for all occasions, including birthdays, anniversaries, and funerals. We also offer workshops and events for those looking to expand their floral knowledge. Our military discount allows service members to save 10% on their orders, up to $50 per purchase. Sign up for our email list to receive exclusive discounts and promotions. Visit our stores to browse our collection of candles, stuffed animals, chocolates, and more. We offer a full line of flower arrangements and gifts, including custom designs and themed gift baskets. Whether you're celebrating a special occasion or expressing sympathy, Viviano Flower Shop has the perfect floral arrangement for you. Our wedding and event flowers are sure to make your special day even more memorable. Follow us on social media for updates and inspiration. We offer same-day flower delivery to a wide range of cities in the Metro Detroit area, as well as to top hospitals in the region. Our commitment to sustainability is reflected in our relationships with over 30 flower growers who prioritize fair labor practices and environmental consciousness. Don't forget to bring back your flower delivery box on your next visit for two free roses! Visit Viviano Flower Shop today for all your floral needs.
Great Lakes Cleaning Solutions
Great Lakes Cleaning Solutions is a trusted cleaning company located at 2180 44th Street Southeast in Grand Rapids, Michigan. We are currently offering a special promotion of $50 off Commercial Cleaning Services for new customers this month. Our mission is to keep your business spotless, as quality is our top priority. We provide cleaning services for a variety of commercial spaces, including schools, churches, medical facilities, office buildings, and more in Grand Rapids and the surrounding areas. Our services are customized to meet your specific needs, and we offer flexible scheduling options including daily, weekly, and bi-weekly service. Contracts are also welcome.
Lakeland medical clinic
Lakeland Medical Clinic is a premier health institution located on John Beers Road in Stevensville, Michigan, United States. As a leading hospital in the region, we provide top-quality medical care and services to our patients. Our dedicated team of healthcare professionals is committed to ensuring the well-being and health of all individuals who walk through our doors. From routine check-ups to specialized treatments, Lakeland Medical Clinic is your trusted partner in health. Visit us today and experience excellence in healthcare.
Yazdi Amaria, MD
Yazdi Amaria, MD is a healthcare institution located at 1555 East Chicago Road in Sturgis, Michigan, United States. Specializing in primary care and specialty services, we are dedicated to providing exceptional medical solutions to our patients. Our team of doctors, each with their own areas of expertise, work together to ensure that every patient receives the best possible care. As a part of Sturgis Hospital, we are proud to be Michigan's first Rural Emergency Hospital, offering top-notch medical assistance to the community. Our qualified and compassionate health professionals are committed to providing quality healthcare to all of our patients. Contact us today to learn more about the services we offer. We look forward to serving you and your healthcare needs.
- Dentistry
- Pediatric dentistry
- Clinical diagnostic centers
- Hospital
- Clinic
- Children's clinic
- Taxi
- Freight transportation
- Delivery service
- Health insurance companies
- Life insurance companies
- Gynecologist
- Therapist
- Oncologist
- Pediatrician
- Psychotherapy
- Family psychologist
- Medical clinic
- Kids medical clinic
- Cosmetic dentistry services
- Specialized hospital care in Ada
- Specialized hospital care in Adrian
- Specialized hospital care in Allegan
- Specialized hospital care in Allen Park
- Specialized hospital care in Allendale Charter Township
- Specialized hospital care in Ann Arbor
- Specialized hospital care in Auburn Hills
- Specialized hospital care in Battle Creek
- Specialized hospital care in Benton Harbor
- Specialized hospital care in Berkley
- Specialized hospital care in Berrien Springs
- Specialized hospital care in Big Rapids
- Specialized hospital care in Bingham Farms
- Specialized hospital care in Birmingham
- Specialized hospital care in Bloomfield Hills
- Specialized hospital care in Bloomfield Township
- Specialized hospital care in Boyne City
- Specialized hospital care in Brighton
- Specialized hospital care in Brownstown Charter Township
- Specialized hospital care in Byron Center
- Specialized hospital care in Cadillac
- Specialized hospital care in Caledonia
- Specialized hospital care in Calumet Township
- Specialized hospital care in Canton
- Specialized hospital care in Cedar Springs
- Specialized hospital care in Charlevoix
- Specialized hospital care in Cheboygan
- Specialized hospital care in City of the Village of Clarkston
- Specialized hospital care in Clawson
- Specialized hospital care in Clinton Township
- Specialized hospital care in Commerce Charter Township
- Specialized hospital care in Comstock Park
- Specialized hospital care in Dearborn
- Specialized hospital care in Dearborn Heights
- Specialized hospital care in Detroit
- Specialized hospital care in Eastpointe
- Specialized hospital care in Escanaba
- Specialized hospital care in Farmington
- Specialized hospital care in Farmington Hills
- Specialized hospital care in Fenton
- Specialized hospital care in Ferndale
- Specialized hospital care in Fraser
- Specialized hospital care in Fremont
- Specialized hospital care in Garden City
- Specialized hospital care in Gaylord
- Specialized hospital care in Georgetown Township
- Specialized hospital care in Gladstone
- Specialized hospital care in Grand Blanc
- Specialized hospital care in Grand Haven
- Specialized hospital care in Grand Rapids
- Specialized hospital care in Grandville
- Specialized hospital care in Grayling
- Specialized hospital care in Greenville
- Specialized hospital care in Grosse Pointe
- Specialized hospital care in Grosse Pointe Woods
- Specialized hospital care in Hamtramck
- Specialized hospital care in Hancock
- Specialized hospital care in Harbor Springs
- Specialized hospital care in Hart
- Specialized hospital care in Hastings
- Specialized hospital care in Hazel Park
- Specialized hospital care in Highland Park
- Specialized hospital care in Hillsdale
- Specialized hospital care in Holland
- Specialized hospital care in Holly
- Specialized hospital care in Houghton
- Specialized hospital care in Houghton Lake
- Specialized hospital care in Howell
- Specialized hospital care in Hudsonville
- Specialized hospital care in Ionia
- Specialized hospital care in Iron Mountain
- Specialized hospital care in Ironwood
- Specialized hospital care in Kalamazoo
- Specialized hospital care in Kalkaska
- Specialized hospital care in Kentwood
- Specialized hospital care in Lincoln Park
- Specialized hospital care in Livonia
- Specialized hospital care in Lowell
- Specialized hospital care in Ludington
- Specialized hospital care in Mackinaw City
- Specialized hospital care in Macomb
- Specialized hospital care in Madison Heights
- Specialized hospital care in Manistee
- Specialized hospital care in Marquette
- Specialized hospital care in Milford Charter Township
- Specialized hospital care in Monroe
- Specialized hospital care in Mount Clemens
- Specialized hospital care in Muskegon
- Specialized hospital care in New Baltimore
- Specialized hospital care in Newaygo
- Specialized hospital care in Niles
- Specialized hospital care in Northville
- Specialized hospital care in Norton Shores
- Specialized hospital care in Novi
- Specialized hospital care in Orion Township
- Specialized hospital care in Paw Paw
- Specialized hospital care in Petoskey
- Specialized hospital care in Plainwell
- Specialized hospital care in Plymouth
- Specialized hospital care in Pontiac
- Specialized hospital care in Portage
- Specialized hospital care in Redford Charter Township
- Specialized hospital care in Reed City
- Specialized hospital care in Richland
- Specialized hospital care in Rochester
- Specialized hospital care in Rochester Hills
- Specialized hospital care in Rockford
- Specialized hospital care in Roseville
- Specialized hospital care in Royal Oak
- Specialized hospital care in Saline
- Specialized hospital care in Saugatuck
- Specialized hospital care in Sault Ste. Marie
- Specialized hospital care in Shelby Township
- Specialized hospital care in South Haven
- Specialized hospital care in South Lyon
- Specialized hospital care in Southfield
- Specialized hospital care in Southgate
- Specialized hospital care in Spring Lake
- Specialized hospital care in St. Clair Shores
- Specialized hospital care in St. Joseph
- Specialized hospital care in Sterling Heights
- Specialized hospital care in Stevensville
- Specialized hospital care in Sturgis
- Specialized hospital care in Taylor
- Specialized hospital care in Three Rivers
- Specialized hospital care in Traverse City
- Specialized hospital care in Trenton
- Specialized hospital care in Troy
- Specialized hospital care in Utica
- Specialized hospital care in Walled Lake
- Specialized hospital care in Warren
- Specialized hospital care in Washington
- Specialized hospital care in Waterford Township
- Specialized hospital care in Wayne
- Specialized hospital care in West Bloomfield Township
- Specialized hospital care in Westland
- Specialized hospital care in Woodhaven
- Specialized hospital care in Wyandotte
- Specialized hospital care in Wyoming
- Specialized hospital care in Ypsilanti
- Specialized hospital care in Zeeland
List of businesses, places and services in Michigan
⭐ business help 🔍 services ☎ phones 🕒 opening times ✍️reviews 🌍 addresses, locations 📷 photos