Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mark S McMahon, MD

Individual provider Orthopaedic Surgery Physician · NPI 1750437521

Mark S McMahon, MD is an Orthopedic Surgery in New York, New York. Graduated from Harvard Medical School in 1986, 40 years ago. Accepts Medicare assignment. Licensed in New York.

Years since qualifying
40
Trained at
Harvard Medical School
Licensed in
NY
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

876 Park Ave
New York, NY 10021
Phone: (212) 717-1405
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 173006 (NY)

Record details

NPI number1750437521
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 26, 2007
Last updated in NPPESDecember 1, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1986 (40 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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