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Dr. Eig graduated from the Georgetown University School of Medicine in 1976. He works in Potomac, MD and specializes in Internal Medicine and Critical Care Medicine.


Explains conditions and treatments
Takes time to answer my questions
Provides follow-up as needed
Office cleanliness

Based on patient feedback.


Dr. Eig's Rating
Patient Perspective
4.0 Explains conditions and treatments
4.0 Takes time to answer my questions
4.0 Provides follow-up as needed
Office Rating
Showing ratings for:
11517 Twining Ln, Potomac, MD, 20854
n/a Average office wait time
4.0 Office cleanliness
4.0 Courteous staff
4.0 Scheduling flexibility
11517 Twining Ln
Potomac, MD, 20854
Showing 1-1 of 1 review
"Dr. Eig prescribes Phentermine to people that do not need it. Just ask. He was sanctioned ten years ago for his "behavioral chemotherapy" as he calls it. Please look it up. Public record. I know two people that have been on the drug for over 14 years straight. They are not overweight. They are psychologically addicted to it. Use it as a form of speed. Why is he allowed to do this. "
  • July 11, 2020


11517 Twining Ln
Potomac, MD, 20854
Mon8:00 am - 4:00 pm
Tue8:00 am - 4:00 pm
Wed8:00 am - 4:00 pm
Thu8:00 am - 11:00 am
Mark Hershel Eig Md
10801 Lockwood Dr Ste 280A
Silver Spring, MD, 20901


Medical School
Georgetown University School Of Medicine
Graduated 1976
University Of Florida Health Shands Hospital


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