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DIANA L MCMAHON MD
NPI 1821928045
Psychiatry & Neurology - Psychiatry in Philadelphia, PA

Active since May 20, 2026PECOS Enrolled
100 E LEHIGH AVE, PHILADELPHIA, PA 19125(215) 707-1200 Get Directions Write a Review

NPPES record last updated: May 20, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Diana L Mcmahon Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIANA L MCMAHON MD (NPI 1821928045) is an individual psychiatry provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MT236449) and active in the NPI registry since May 2026. She is enrolled in Medicare PECOS and maintains a secondary practice location in Philadelphia.

NPPES Registry Identity

NPI1821928045
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameDIANA L MCMAHONCredential: MD
Location Address100 E LEHIGH AVEPhiladelphia, PA 19125-1012
Mailing Address5030 Commonwealth StDetroit, MI 48208-2040 · (231) 736-7480
Phone(215) 707-1200
Sole ProprietorYes
Enumeration DateMay 20, 2026
NPPES CertifiedMay 12, 2026
✔ NPI 1821928045 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in PA · MT236449
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
100 E LEHIGH AVE, Philadelphia, PA 19125
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Secondary Practice Location 1

Location 13401 N Broad StPhiladelphia, PA 19140-5103 · Phone (800) 836-7536

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana L Mcmahon Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19125 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$180.99 typical visit price
range $59.88 – $180.99
Typical copayment $45.24 (range $14.97 – $45.24)
Most-billed visit code 99205
Established Patient
$74.47 typical visit price
range $19.30 – $147.29
Typical copayment $18.61 (range $4.82 – $36.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROBERT ERIC SIMONS
Psychiatry & Neurology (Psychiatry)
100 E LEHIGH AVE
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-1200
EILEEN ZHOU MD
Psychiatry & Neurology (Psychiatry)
100 E LEHIGH AVE
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-1200
MADHULATHA PAUL MD
Psychiatry & Neurology (Psychiatry)
100 E LEHIGH AVE, MAB BLDG STE 105
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-8496
HARGROW DEXTER BARBER DDS
Dentist (Oral and Maxillofacial Surgery)
100 E LEHIGH AVE
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-3613
GABRIEL SANCHEZ-ALDANA JR. M.D.
Family Medicine
100 E LEHIGH AVE
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-1866
TEMPLE PHYSICIANS INC.
Internal Medicine
100 E LEHIGH AVE, CHC - 1
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-1866
TEMPLE PHYSICIANS INC.
Internal Medicine (Cardiovascular Disease)
100 E LEHIGH AVE, MAB 110
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-1136
DR. RUBY HASSANYEH BARGHINI M.D.
Psychiatry & Neurology (Psychiatry)
100 E LEHIGH AVE
PHILADELPHIA, PA 19125
Philadelphia County (215) 707-8496

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diana Mcmahon's NPI number?

The NPI number for Diana Mcmahon is 1821928045. It was assigned to this individual provider in the NPPES registry on May 20, 2026.

Where is Diana Mcmahon located?

Diana Mcmahon practices at 100 E Lehigh Ave, Philadelphia, PA 19125. The listed phone number is (215) 707-1200.

What is Diana Mcmahon's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Diana Mcmahon enrolled in Medicare?

Yes. Diana Mcmahon is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Diana Mcmahon was last updated on May 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.