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

Marc Z Simmons, MD

Individual provider Diagnostic Radiology Physician · NPI 1841208386

Marc Z Simmons, MD practises Diagnostic Radiology in New York, New York. Graduated from State University of Ny Upstate Medical University in 1986, 40 years ago. Practices with MSKCC Radiology Group, a 195-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
40
Trained at
State University of Ny Upstate Medical University
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 Address checks out

1275 York Ave
New York, NY 10021-6007 Not confirmed with CMS for 11 years — call before visiting
Phone: (212) 639-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 177239 (NY)

Record details

NPI number1841208386
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 3, 2006
Last updated in NPPESApril 7, 2015

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 1986 (40 years in practice)
Group practice Mskcc Radiology Group — 195 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations10 on file with Medicare

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 patients1,265
Services billed 1,926 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.

Affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at MSKCC Radiology Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 195 clinicians in the practice; 12 are shown here.

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