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

Individual provider Hematology & Oncology Physician · NPI 1407855307

Steven Gruenstein, MD is a Hematology/Oncology in New York, New York. Qualified in 1984, 42 years ago. Practices with North Shore Hematology Oncology Associates PC, a 473-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
42
Licensed in
NY
In the registry since
2005
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

12 E 86th St Ofc 4
New York, NY 10028-0517
Phone: (212) 861-6660
Fax: (212) 744-4696
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 1776051 (NY)

Record details

NPI number1407855307
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 21, 2005
Last updated in NPPESJanuary 17, 2020
Certification dateJanuary 17, 2020

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 1984 (42 years in practice)
Group practice North Shore Hematology Oncology Associates Pc — 473 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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