Doctor profile · Federal record
Dr. Michael Willen, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Clifton Park, NY
- NPI 1912994849
- Accepts Medicare
- MIPS 79.9 / 100 · 2023
- 50 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3 Crossing Blvd, Suite 1
Clifton Park, NY 120654154
(518) 831-4434
fax (518) 831-4435
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- March 20, 2019
- Year of graduation
- 1976 — 50 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- New York #131246
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912994849. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
123
Distinct HCPCS
4
Medicare allowed
$9,680
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 63 | 44 | $48 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 26 | 19 | $76 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 23 | 23 | $125 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 11 | 11 | $167 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 815. This provider delivers 0.2× the peer median.Frequently asked questions
What is Dr. Michael Willen's medical specialty?
Dr. Michael Willen practices Hematology & Oncology Physician in Clifton Park, NY.
Where does Dr. Michael Willen practice?
Dr. Michael Willen practices at 3 Crossing Blvd, Clifton Park, NY 120654154. Office phone: 5188314434.
What is Dr. Michael Willen's NPI?
Dr. Michael Willen's National Provider Identifier (NPI) is 1912994849, issued by NPPES.
Does Dr. Michael Willen accept Medicare assignment?
Yes. Dr. Michael Willen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Willen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.