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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

KATHARINE ELIZABETH RITTMAYER PA-C
NPI 1649176280
Physician Assistant - Medical in Philadelphia, PA

Active since October 19, 2026
4170 CITY AVE, PHILADELPHIA, PA 19131(215) 871-6100 Get Directions Write a Review

NPPES record added: October 19, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Katharine Elizabeth Rittmayer Pa-c NPPES

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

KATHARINE ELIZABETH RITTMAYER PA-C (NPI 1649176280) is an individual medical provider in Philadelphia, Pennsylvania and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1649176280
Entity TypeIndividualFemale
Primary Taxonomy363AM0700X
Provider Legal NameKATHARINE ELIZABETH RITTMAYERCredential: PA-C
Location Address4170 CITY AVEPhiladelphia, PA 19131-1610
Mailing Address5200 Hilltop Dr Apt J12Brookhaven, PA 19015-1280 · (610) 506-8140
Phone(215) 871-6100
Sole ProprietorNo
Enumeration DateOctober 19, 2026
NPPES CertifiedOctober 19, 2026
✔ NPI 1649176280 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · MedicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AM0700X
4170 CITY AVE, Philadelphia, PA 19131
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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.

DR. JAWAD AHMAD DO
Student in an Organized Health Care Education/Training Program
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6100
COURTNEY HARTWELL
Physician Assistant
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6100
SHAINA YADAV
Physician Assistant
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6100
SIMONA KOGAN
Student in an Organized Health Care Education/Training Program
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6100
ALICE VO
Student in an Organized Health Care Education/Training Program
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6100
BRIANNA BECKER
Physician Assistant
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6380
DANIELA D MARINARO
Orthopaedic Surgery
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6700
ZUHRA NASSERY
Physician Assistant (Surgical)
4170 CITY AVE
PHILADELPHIA, PA 19131
Philadelphia County (215) 871-6100

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 Katharine Rittmayer's NPI number?

The NPI number for Katharine Rittmayer is 1649176280. It was assigned to this individual provider in the NPPES registry on October 19, 2026.

Where is Katharine Rittmayer located?

Katharine Rittmayer practices at 4170 City Ave, Philadelphia, PA 19131. The listed phone number is (215) 871-6100.

What is Katharine Rittmayer's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

When was this NPI record last updated?

The NPPES record for Katharine Rittmayer was last updated on October 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days 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.