MedStar Medical Group Family Practice at Olney


Family Medicine | 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: 301-570-7770

18109 Prince Philip Dr., Ste. B200
Olney, MD 20832

Hours of Operation:

Monday through Thursday 8 a.m. to 5 p.m.
Friday 8 a.m. to 4 p.m.

Phone Hours:

Monday through Thursday 8:30 a.m. to 5 p.m.
Friday 8:30 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

Our family and internal medicine practice provides comprehensive, conveniently located health care close to where you live and work. Our dermatology and primary care doctors care for your entire family right here in Montgomery County.

We provide comprehensive and compassionate care for all your family members from birth through adulthood. Our doctors are board certified, so we have extensive training and experience in preventive care and treatment for both common and complex illnesses.

Meet the Team


Mohammad Ahmad Safdar Ali, MD, internal medicine

Mohammad Ahmad Safdar Ali, MD
Internal Medicine

Lacartia Best, MD, dermatology

Lacartia Best, MD


Melanie Grady, MD, family medicine

Melanie Grady, MD
Family Medicine


April Tweedt, DO, family medicine

April Tweedt, DO
Family Medicine

Elieen Wiesenberger, MD, internal medicine

Eileen Wiesenberger, DO
Internal Medicine


Stephanie Carpenter, CRNP
Family 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:

  • Chronic disease screening and management
  • Geriatrics
  • Pediatric Care
  • Vaccines and immunizations
  • Weight loss assistance


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

MedStar Medical Group Family Practice at Olney 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.

Directions and Parking


Free parking available on site.

Shuttle available and public transportation access is available on campus.