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

Michael Willen, MD

Individual provider Hematology & Oncology Physician · NPI 1912994849

Michael Willen, MD is a Hematology/Oncology in Clifton Park, New York. Graduated from New York Medical College in 1976, 50 years ago. Practices with New York Oncology Hematology PC, a 82-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
50
Trained at
New York Medical College
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

3 Crossing Blvd Ste 1
Clifton Park, NY 12065-4154
Phone: (518) 831-4434
Fax: (518) 831-4435
Show map & directions

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

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 131246 (NY)

Record details

NPI number1912994849
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 5, 2005
Last updated in NPPESMarch 20, 2019
Mailing address3 Crossing Blvd, Suite 1, Clifton Park, NY 12065-4154

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 1976 (50 years in practice)
Group practice New York Oncology Hematology Pc — 82 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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