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

Katherine Allyn

Individual provider Internal Medicine Physician · NPI 1902435654

Katherine Allyn practises Internal Medicine in New York, New York. Graduated from Albert Einstein College of Medicine of Yeshiva University in 2020, 6 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 2,791-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
6
Trained at
Albert Einstein College of Medicine of Yeshiva University
Licensed in
NY
In the registry since
2020
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Practice location Address checks out

17 E 102nd St
New York, NY 10029-5204
Phone: (212) 659-8551
Fax: (212) 831-8116
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1 Gustave L Levy Pl, New York, NY 10029-6504 — (212) 241-6741

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 324184 (NY)

Record details

NPI number1902435654
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedApril 5, 2020
Last updated in NPPESJuly 25, 2023
Certification dateJuly 25, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY
Graduated 2020 (6 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 2791 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients116
Services billed 258 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Icahn School of Medicine at Mount Sinai

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2791 clinicians in the practice; 12 are shown here.

Other providers in New York