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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARGARET KARPATKIN M.D.
NPI 1336133552
Pediatrics - Pediatric Hematology-Oncology in New York, NY

Active since September 02, 2005
317 E 34TH ST, 8TH FL, NEW YORK, NY 10016(212) 263-8400 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Margaret Karpatkin M.d. NPPES

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

MARGARET KARPATKIN M.D. (NPI 1336133552) is an individual pediatric hematology-oncology provider in New York, New York, licensed in New York (098263) and active in the NPI registry since September 2005.

NPPES Registry Identity

NPI1336133552
Entity TypeIndividualFemale
Primary Taxonomy2080P0207X
Provider Legal NameMARGARET KARPATKINCredential: M.D.
Location Address317 E 34TH ST, 8TH FLNew York, NY 10016-4974
Mailing Address317 E 34th St, 8th FlNew York, NY 10016-4974 · (212) 263-8400
Phone(212) 263-8400
Sole ProprietorNo
Enumeration DateSeptember 2, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1336133552 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in NY · 098263
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
317 E 34TH ST, New York, NY 10016
Open in Google Maps ↗

Other Identifiers 1

Medicaid00167097NY

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.

TAHSIN KABIR
Family Medicine
317 E 34TH ST
NEW YORK, NY 10016
New York County (212) 726-7400
KELLY ANN KEYSER
Nurse Practitioner (Adult Health)
317 E 34TH ST
NEW YORK, NY 10016
New York County (732) 379-1237
ANN AURIGEMMA NP
Nurse Practitioner (Pediatrics)
317 E 34TH ST
NEW YORK, NY 10016
New York County (212) 725-6300
DR. PHOEBE E RABBIN MD
Dermatology
317 E 34TH ST
NEW YORK, NY 10016
New York County (212) 981-7240
DR. YOON-SOO BAE BS, MA, MD
Specialist
317 E 34TH ST, 11TH FLOOR
NEW YORK, NY 10016
New York County (212) 686-7306
DR. AMY B BLEYER MD
Internal Medicine
317 E 34TH ST
NEW YORK, NY 10016
New York County (212) 726-7462
MIRIANNY ORTIZ
Nurse Practitioner (Family)
317 E 34TH ST
NEW YORK, NY 10016
New York County (212) 263-8134
JAMES ALFONSO BISOGNO DO
Family Medicine
317 E 34TH ST
NEW YORK, NY 10016
New York County (212) 726-7400

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 Margaret Karpatkin's NPI number?

The NPI number for Margaret Karpatkin is 1336133552. It was assigned to this individual provider in the NPPES registry on September 2, 2005.

Where is Margaret Karpatkin located?

Margaret Karpatkin practices at 317 E 34th St 8th Fl, New York, NY 10016. The listed phone number is (212) 263-8400.

What is Margaret Karpatkin's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

When was this NPI record last updated?

The NPPES record for Margaret Karpatkin was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 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.