Janet O'Mahony, M.D. - Doctor in Baltimore, MD

Janet O'Mahony, M.D.

Doctor
4.9

7 reviews

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About This Business

With 35 years of experience since graduating from the University of Maryland School of Medicine in 1991, Janet O'Mahony, M.D., is an internal medicine physician in Baltimore, Maryland, above the 34-year average among the 81 Baltimore physicians in our directory. She is one of 25 internal medicine physicians in our Baltimore listings. She is affiliated with Mercy Medical Center. In MIPS, the federal program scoring Medicare clinicians on quality and cost, she holds 86 out of 100. She accepts Medicare and offers telehealth, one of 17 doctors in our Baltimore listings with both. Patients rate her 4.9 across 7 reviews.

Verified Provider Info

Specialty (per registry)
Internal Medicine
NPI Number
1538107073
Medical school graduate
1991 (35+ years of practice)
Medical school
UNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
State license
D0046389 (MD)
Hospital affiliations
Mercy Medical Center Inc
Quality score (CMS MIPS)
86/100
Accepts MedicareTelehealth available

Source: NPPES NPI Registry (CMS) · CMS Doctors & Clinicians dataset · checked 2026-08-18

Address

301 St Paul Pl
Baltimore, MD 17.1

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Information last updated: September 7, 2026