MedStar Medical Group Primary Care at Great Mills

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Opened in early 2018, the new East Run Center is a 45,000-square-foot community health center offering primary care, behavioral health, laboratory services, community education, and more. 

MedStar Medical Group Primary Care at Great Mills provides convenient and comprehensive primary care. Our family, internal, and pediatric medicine physicians serve as your partner for a broad range of healthcare services. Specializing in high-quality care for patients of all ages, we work together to manage your overall health, from preventive care to chronic disease management.

We proudly offer these services:

  • Annual physicals
  • Adolescent services
  • Behavioral health
    • Anxiety disorders
    • Adolescent psychiatry
    • Eating disorders
    • Geriatric psychiatry 
    • Memory disorders
    • Mood disorders (depression, bipolar disorders)
  • Men's health
  • Pediatric care
  • Preventive care
  • Sick visits
  • Well visits
  • Women's health

Meet Our Team

Fahmi Fahmi, MD
Internal Medicine

Pamela Laigle, CRNP
Family Medicine

Marie Taylor Tarleton, CRNP
Internal Medicine

Josephine McCaskill, CRNP
Family Medicine


We accept most major insurance plans. Contact your insurance provider for information related to copay or other out of pocket costs.

Office Information

Address: 45870 East Run Drive, Lexington Park, MD, 20653

Phone Number: 240-895-8600

Fax: 240-895-8609

Se habla Espanol 

Office Hours:
Monday 7:30 a.m. to 4:30 p.m.
Tuesday: 7:30 a.m. to 4:30 p.m.
Wednesday: 7:30 a.m. to 4:30 p.m.
Thursday: 7:30 a.m. to 4:30 p.m.
Friday: 7:30 a.m. to 4:30 p.m.

Appointment Hours:
Monday through Friday, 7:40 a.m. to 4 p.m.


Managing a chronic health condition can be challenging, especially for those with limited access to transportation. With our AccessHealth program, getting the support you need to get well and stay well is easy. Our program provides clinical care coordination performed by registered nurses, who will visit your home and make a Care Plan that meets your needs. He or she will go over your medical history with you and record all your medications, learn about any conditions or diseases you may have, and review your diet with you. This will help you stay well and at home in your community. If needed, a clinical care coordinator will accompany you to healthcare appointments. 

AccessHealth also has neighborhood wellness advocates — members of your own community who can assist in arranging transportation, scheduling and preparing for medical appointments. If needed, a neighborhood wellness advocate will also accompany you to healthcare appointments. Anyone can make a referral to AccessHealth on his or her behalf, or for another person. Call Health Connections at 301-475-6019 for more information.

MedStar St. Mary's Outpatient Laboratory 

MedStar St. Mary's Hospital offers phlebotomy services at various locations. Patients must register for all scheduled appointments. The last specimen collection is performed 15 minutes prior to closing at each site. 

  • General blood testing - walk-ins accepted 
  • Glucose tolerance tests - appointment required 

LabCorp and Quest Diagnostics

Should your insurance require that you utilize LabCorp and Quest for your laboratory services, you must present their completed requisition form to the location for all of your laboratory needs. 

Contact Us

MedStar Medical Group Primary Care at Great Mills

East Run Center
45870 East Run Drive
Lexington Park
Phone: 240-895-8600
Fax: 240-895-8609
Hours: Monday - Friday 7:30 a.m. to 4:30 p.m.

Laboratory Center 

East Run Center
45870 East Run Drive
Lexington Park
Open Monday - Friday, 7 a.m. to 4 p.m. 
PHONE 240-895-8618
FAX 240-895-8619
Click here for all Laboratory Center locations

Education Classroom

East Run Center features a meeting room for use by community groups and organizations, including MedStar St. Mary's Hospital's Community Outreach Department. Some support groups and various events through Health Connections will be held in the education classroom on the first floor of the building. Visit for a full list of classes and events. 

View a full list of local healthcare resources