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

Individual provider Hematology & Oncology Physician · NPI 1710074885

Ruben Niesvizky, MD is a Medical Oncology in New York, New York. Qualified in 1985, 41 years ago. Practices with Weill Medical College of Cornell, a 2,031-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
41
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

425 E 61st St Fl 8
New York, NY 10065-8722
Phone: (646) 962-6500
Fax: (212) 746-8961
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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 195309 (NY)

Record details

NPI number1710074885
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 9, 2006
Last updated in NPPESJuly 31, 2023
Certification dateJuly 31, 2023

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Also practisesHEMATOLOGY
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Group practice Weill Medical College Of Cornell — 2031 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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