Mark Posnick, DO
About This Business
Mark Posnick, DO, is a family medicine physician in Nashua, New Hampshire, with 8 years of practice since graduating from Lake Erie College of Osteopathic Medicine, Bradenton in 2018. He holds active licenses in Pennsylvania and New Hampshire and is affiliated with Southern NH Medical Center, St Joseph Hospital, and Lahey Hospital & Medical Center, Burlington. He is one of six family medicine physicians among the 107 Nashua doctors in our directory. He accepts Medicare; telehealth is not listed among his services. Patients rate him 4.1 across 9 reviews.
Verified Provider Info
- Specialty (per registry)
- Family Medicine
- NPI Number
- 1194218834
- Medical school graduate
- 2018 (8+ years of practice)
- Medical school
- LAKE ERIE COL OF OSTEOPATHIC MEDICINE, BRADENTON
- State license
- OT018549 (PA), 21698 (NH)
- Hospital affiliations
- Southern Nh Medical Center · St Joseph Hospital · Lahey Hospital & Medical Center, Burlington
Source: NPPES NPI Registry (CMS) · CMS Doctors & Clinicians dataset · checked 2026-08-18
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Information last updated: August 23, 2026
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