Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark A Greenberg, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1376628149

Mark A Greenberg, MD is registered under Cardiovascular Disease (Cardiology) in Bronx, New York. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1973, 53 years ago. Practices with Montefiore Medical Center, a 2,796-clinician group. Licensed in New York.

Years since qualifying
53
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

Mmc - Dept OF Medicine 111 East 210TH Street
Bronx, NY 10467 Not confirmed with CMS for 19 years — call before visiting
Phone: (718) 920-4212
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence 120830 (NY)

Record details

NPI number1376628149
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 27, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1973 (53 years in practice)
Group practice Montefiore Medical Center — 2796 clinicians
Accepts Medicare assignment Not indicated

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 patients62
Services billed 151 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 Montefiore Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2796 clinicians in the practice; 12 are shown here.

Other providers in Bronx