Michael Willen, M.D.
Hematology & Oncology Physician · Clifton Park, NY
Michael Willen, M.D. is a hematology & oncology physician with a practice address in Clifton Park, New York, and NPI 1912994849, issued on Oct 5, 2005. Check the license (New York 131246, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Michael Willen
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 131246 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3 Crossing Blvd, Clifton Park, NY 12065
- Phone
- (518) 831-4434
- Enumerated
- Oct 5, 2005
- Record last updated
- Mar 20, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (518) 831-4435
- Medicare enrollment
- Enrolled (PECOS I20040223000801); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1976
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 3 Crossing Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justin Juliano, M.D.Radiation Oncology Physician1841484839
- Catherine McAvoy-Pindar, LCSWClinical Social Worker1952026817
- Patricia Stott, ANPAdult Health Nurse Practitioner1912269861
Verify Michael Willen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 131246Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 82.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- New York Oncology Hematology PCHalfmoon, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Willen among 1,163 hematology & oncology physician records in New York
Michael Willen, M.D. is one of 1,163 hematology & oncology physician records with a practice address in New York. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1976 · median 2002 among the 833 with a school on file
- Record last updated2019 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in New York
There are 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in Clifton Park → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ranjit Banwait, MDClifton Park, NY 120651306341144
- Adriana Lisinschi, M.D.Halfmoon, NY 120651013331735
- Howard Schlossberg, M.D.Clifton Park, NY 120651023005691
- Sunitha Sukumaran, MDClifton Park, NY 120651750359055
- Ovundah Okene, MDJohnstown, NY 120951285706168
- John Mongan, D.O.Malta, NY 120201134235765
- Inder Lal, MDAmsterdam, NY 120101124227889
- Deborah Sculco, MDAmsterdam, NY 120101013910660
Common questions
What is Michael Willen, M.D.'s NPI number?
Michael Willen, M.D.'s National Provider Identifier (NPI) is 1912994849, issued on Oct 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael Willen, M.D. located?
The NPPES record lists a practice address at 3 Crossing Blvd, Clifton Park, NY, 12065. Phone: (518) 831-4434. Providers update this record themselves, so call before visiting.
How can I verify Michael Willen, M.D.'s license?
NPPES lists New York license number 131246, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Michael Willen, M.D.'s MIPS final score?
The 2023 MIPS final score is 82.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.