Due to renovations at our Patroon Creek office, the regular entrance in the lower lot is CLOSED. Patients (including those from our Troy and Albany Medical Center locations) must use the upper lot entrance for Suite 210 and 211. However, Radiation, PET and CT imaging patients can use our separate Radiation Entrance in the lower lot. Learn More

Our Team

Michael Willen, M.D., F.A.C.P.

Michael Alan Willen, M.D., F.A.C.P.

Michael Willen, M.D., F.A.C.P.


Medical Oncology


Clifton Park Cancer Center - Saratoga County
3 Crossing Blvd
Clifton Park, NY 12065
Phone: (518) 831-4434


NYOH Board of Directors

Professional Education

  • Bachelor of Science Degree—Rensselaer Polytechnic Institute, Troy, NY
  • Medical Degree—New York Medical College, Valhalla, NY
  • Internship—Long Island Jewish Medical Center, New Hyde Park, NY
  • Residency—Long Island Jewish Medical Center, New Hyde Park, NY
  • Fellowship in Hematology/Oncology—Albany Medical College, Albany, NY


  • Board Certified in Internal Medicine
  • Board Certified in Hematology
  • Board Certified in Medical Oncology

Memberships and Affiliations

  • American Medical Association
  • American College of Physicians
  • Medical Society of the State of New York
  • Rensselaer County Medical Society
  • American Society of Clinical Oncology
  • American Society of Hematology
  • International Society on Thrombosis and Haemostasis


Dr. Willen is married and has two adult children. His interests include spectator sports and science fiction.