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

Individual provider Psychiatry Physician · NPI 1821928045

Diana L McMahon, MD is a Psychiatry Physician in Philadelphia, Pennsylvania. Practices as a sole proprietor and works from 2 locations. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2026
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

100 E Lehigh Ave
Philadelphia, PA 19125-1012
Phone: (215) 707-1200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3401 N Broad St, Philadelphia, PA 19140-5103 — (800) 836-7536

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence MT236449 (PA)

Record details

NPI number1821928045
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 20, 2026
Last updated in NPPESMay 20, 2026
Certification dateMay 12, 2026

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