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

KATHERINE MARIKO MARKIN MD
NPI 1851033237
Emergency Medicine in New York, NY

Active since April 07, 2022
550 1ST AVE, NEW YORK, NY 10016(646) 929-7800 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Katherine Mariko Markin Md NPPES

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

KATHERINE MARIKO MARKIN MD (NPI 1851033237) is an individual emergency medicine provider in New York, New York, licensed in New York (342730) and active in the NPI registry since April 2022.

NPPES Registry Identity

NPI1851033237
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameKATHERINE MARIKO MARKINCredential: MD
Location Address550 1ST AVENew York, NY 10016-6402
Mailing Address550 1st AveNew York, NY 10016-6402
Sole ProprietorYes
Enumeration DateApril 7, 2022
Last NPPES UpdateJuly 1, 2026
NPPES CertifiedJuly 1, 2026
NPI 1851033237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License Licensed in NY · 342730
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
550 1ST AVE, New York, NY 10016

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.

Internal Medicine
550 1ST AVE
NEW YORK, NY 10016
Emergency Medicine (Pediatric Emergency Medicine)
550 1ST AVE
NEW YORK, NY 10016
Allergy & Immunology
550 1ST AVE, NBV 16N30, INTERNAL MEDICINE RESIDENCY PROGRAM
NEW YORK, NY 10016
Student in an Organized Health Care Education/Training Program
550 1ST AVE
NEW YORK, NY 10016
Radiology (Vascular & Interventional Radiology)
550 1ST AVE
NEW YORK, NY 10016
Surgery
550 1ST AVE
NEW YORK, NY 10016
Student in an Organized Health Care Education/Training Program
550 1ST AVE
NEW YORK, NY 10016
Student in an Organized Health Care Education/Training Program
550 1ST AVE
NEW YORK, NY 10016

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 Katherine Markin's NPI number?

The NPI number for Katherine Markin is 1851033237. It was assigned to this individual provider in the NPPES registry on April 7, 2022.

Where is Katherine Markin located?

Katherine Markin practices at 550 1st Ave, New York, NY 10016. The listed phone number is (646) 929-7800.

What is Katherine Markin's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

When was this NPI record last updated?

The NPPES record for Katherine Markin was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 45 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.