MedStar Medical Group Pediatrics at Olney



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: 301-774-5800

18109 Prince Philip Dr., Ste. 375
Olney, MD 20832

Hours of Operation:

Monday through Friday 8:15 a.m. to 5:15 p.m.
Saturday: 8:30 a.m. to 12 p.m. (urgent care visits only)


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 board-certified pediatricians care for your child from infancy through adolescence. We provide comprehensive and compassionate care for children and adolescents.

Meet the Team


Cheryl Dias, MD, pediatrics

Cheryl Dias, MD

Ashley Dunn, MD, pediatrics

Ashley Dunn, MD


Ann Hellerstein, MD, pediatrics

Ann Hellerstein, MD


Elaine Lee, MD, pediatrics

Elaine Lee, MD


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
  • Flu care and flu vaccine
  • Laboratory testing and blood tests
  • Pediatric Care
  • Preoperative consultations
  • Vaccines and immunizations


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

MedStar Medical Group at Gaithersburg 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 on-site

Public transportation access