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

Dr. James Michael Horowitz, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1831374131

Dr. James Michael Horowitz, MD is a Cardiovascular Disease (Cardiology) in New York, New York. Graduated from Perelman School of Med at the University of Pennsylvania in 2005, 21 years ago. Practices with New York University, a 5,884-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
21
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
NY
In the registry since
2008
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

550 1st Avenue Skirball 9R
New York, NY 10016
Phone: (212) 263-7000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 244152 (NY)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 244152 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence 244152 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 244152 (NY)

Record details

NPI number1831374131
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 4, 2008
Last updated in NPPESApril 2, 2025
Certification dateApril 2, 2025

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2005 (21 years in practice)
Group practice New York University — 5884 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in New York