Local resources
Hospitals, doctors and urgent care in St. Mary's County
Choosing a Supplement is easier when you know where you will go for care. Here are the main hospital and urgent care locations we reviewed in St. Mary's County, with plain notes on how Medicare and a Supplement help pay for each kind of visit.
Why a Supplement fits the way people here get care
St. Mary's County is a peninsula with water on most sides. A trip to a hospital or a specialist can mean a real drive, and plenty of residents use providers in different parts of Maryland or beyond. A standard Supplement has no provider network, so it follows Original Medicare to any doctor or hospital that accepts Medicare. People who split time between homes, or who see specialists out of the county, often value that.
That is not true of every product. Medicare SELECT policies may ask you to use certain providers, and Medicare Advantage plans have networks that change each year. We compare these ideas with you, one question at a time.
Hospital
MedStar St. Mary's Hospital
25500 Point Lookout Rd., Leonardtown, MD 20650
Phone: 301-475-8981
Visit the hospital's website
A full-service community hospital in the county seat. It offers inpatient and outpatient services.
How Medicare helps: Part A covers inpatient stays after the deductible, which is $1,736 for each benefit period in 2026. Plan G and Plan N cover that deductible. High Deductible Plan G asks you to meet its plan deductible first.
Urgent care
MedStar Health Urgent Care in California
44980 St. Andrews Church Rd., California, MD 20619
Phone: 855-910-3278
Hours listed: 8 a.m. to 8 p.m., every day
Visit the location page
MedStar Health Urgent Care in Great Mills
45870 East Run Dr., Ste. 102, Lexington Park, MD 20653
Phone: 855-910-3278
Visit the location page for current hours
The two sites are about six miles apart, so people in the middle of the county can often reach either. Walk-in availability and wait times change during the day, so check before you go.
How Medicare helps: Part B generally covers medically necessary urgent care. After the yearly Part B deductible ($283 in 2026), you usually owe 20% of the Medicare-approved amount, and a Supplement can pay some or all of that. Urgent care can cost less than an emergency room visit for problems that are not emergencies. For anything life-threatening, call 911.
Doctors and specialists
Primary care and specialist offices are too numerous and change too often for us to list fairly, and we do not rank or endorse providers. Instead, we suggest two checks. First, ask the office whether it accepts assignment for Medicare patients. Second, use Medicare's Care Compare tool to look up doctors and hospitals and see their published quality information.
Whichever facility you use, remember our standing note: Network participation varies by plan. Call us to check whether a facility is in yours.
More about the county
For county services, maps and news, see the St. Mary's County government website. We are not affiliated with it, and it is a good place to confirm local services we do not cover here. To see how your plan options fit with your care, read our plan comparison or our guide to the enrollment window.
Last reviewed: November 2026. Hours, phone numbers and services change, so confirm details with the facility. Listings are for information only and are not endorsements.
Common questions
Will my Supplement pay for MedStar St. Mary's Hospital?
A standard Supplement has no provider network and works with any hospital that accepts Medicare. Plans sold as Medicare SELECT are an exception. Network participation varies by plan. Call us to check whether a facility is in yours.
Does Medicare cover urgent care visits?
Part B generally covers medically necessary urgent care. A Supplement can pay part of what Part B leaves, depending on the plan. Under Plan N, an emergency room visit that does not lead to admission can carry a copay of up to $50.
How do I know if my doctor accepts Medicare?
Ask whether they accept assignment, which means they take Medicare's approved amount as full payment. You can also search for providers on Medicare's Care Compare tool.
Check how your doctors and hospital fit your plan
Tell us where you get care and we will explain how each Supplement option works with it, including whether any plan has provider rules. Call (410) 896-1212, or book a time that suits you. Our help is free to you.