MedStar Medical Group at 18111 Prince Philip


Internal Medicine

Care you can trust.

Don't delay medical care. We are open for in-person office visits and video visits. Call us to schedule your appointment today.

Call: 301-570-8535

18111 Prince Philip Dr., Ste. 207
Olney, MD 20832

Hours of Operation:

Monday through Friday 8 a.m. to 4 p.m.

Phone Hours:

Monday through Friday 8 a.m. to 4 p.m.


Care you can trust

Your health and safety are always our top priority. Here's what you can expect from an in-office visit:

  • Face masks required for everyone, regardless of symptoms
  • Frequent disinfecting and cleaning of public spaces and exam rooms, including after every clinical visit
  • Staggered appointments to minimize people in a given area
  • Screening all patients and visitors for symptoms upon arrival
  • Physical distancing with floor markers and reconfigured waiting areas
  • Sanitizing stations throughout the facility

You don't have to travel far to find a first-class internal medicine doctor. Our physicians offer primary care services—close to where you live and work in Montgomery County.

We treat patients age 18 and older, focusing on your overall health and well-being. We offer a broad range of services for adults, from preventive care to chronic disease management. Whether you need a medical evaluation or are feeling ill, our expert providers are here to help.

Meet the Team


Christopher J May, MD, internal medicine

Christopher J. Mays, MD
Internal Medicine

Juan Verastegui, MD, internal medicine

Juan Verastegui, MD
Internal Medicine


Angela Silverman, CRNP, internal medicine

Angela Silverman, CRNP
Internal Medicine


Need urgent care?

We bring together top providers at community-based locations.

Need care after hours?

We offer virtual access to medical providers from your home.

Looking for specialty care?

We bring together the top specialists in your community.

Insurance plans we accept

MedStar Medical Group accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Medical Group, please call your insurance company.

Click here for a list of accepted insurance plans.

Services we offer include:

  • Annual physicals and sports physicals
  • Chronic disease screening and management
  • Flu care and flu vaccine
  • Geriatrics
  • Laboratory testing and blood tests
  • Pediatric Care
  • Preoperative consultations
  • Vaccines and immunizations
  • Weight loss assistance


Patient-Centered Medical Home™ is a trademark of the National Committee for Quality Assurance.

MedStar Medical Group at 18111 Prince Philip has been awarded Patient-Centered Medical Home™ recognition by the National Committee for Quality Assurance (NCQA). The NCQA Patient-Centered Medical Home standards emphasize the use of systematic, patient-centered, coordinated care that supports access, communication, and patient involvement.

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