Aaron Willen, DO
Emergency Medicine Physician · Saratoga Springs, NY
Aaron Willen, DO is an emergency medicine physician with a practice address in Saratoga Springs, New York, and NPI 1316352776, issued on Jun 24, 2014. Check the license (New York 302721, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Aaron Willen
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 302721 NY
Self-reported in NPPES; status is on the state search - Practice location
- 211 Church St, Saratoga Springs, NY 12866
- Phone
- (518) 886-5957
- Enumerated
- Jun 24, 2014
- Record last updated
- May 16, 2022
- Medicare enrollment
- Enrolled (PECOS I20210208001278); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2014
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at 211 Church St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edelann Abreo, MDStudent in an Organized Health Care Education/Training Program1710675467
- Harold Adams, MDFamily Medicine Physician1043245301
- Ryan Alden, MDRadiation Oncology Physician1689298994
- Mary AllardSocial Worker1841917473
- Ronald Allen, PAPhysician Assistant1407962574
- Carrie Ambrosino, RPA-CPhysician Assistant1659579332
Verify Aaron 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 302721Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average emergency medicine physician in 2024
323 Medicare Part D claims for 234 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 15 claims were for opioids.
Most prescribed
- Prednisone60 claims
- Cefdinir37 claims
- Doxycycline Hyclate28 claims
- Ondansetron Odt15 claims
- Cyclobenzaprine Hcl14 claims
- Oxycodone-Acetaminophen12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 65.4 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
- Island Emergency Medical Services PCAlbany, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Willen among 5,025 emergency medicine physician records in New York
Aaron Willen, DO is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 59% of them.
- NPI issued2014 · 59% of these records are older, 37% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2014 · median 2013 among the 3,232 with a school on file
- Record last updated2022 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 emergency medicine physician records list a practice address in Saratoga Springs
They are 23 of the 1,275 NPPES records with a practice address in Saratoga Springs, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Saratoga Springs → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jason Bernad, MDSaratoga Springs, NY 128661932136843
- Timothy Brooks, MDSaratoga Springs, NY 128661841227758
- Christopher Case, DOSaratoga Springs, NY 128661578599718
- John Davies, M.D.Saratoga Springs, NY 128661205835220
- Paul Dittes, MDSaratoga Springs, NY 128661366481491
- Todd Duthaler, DOSaratoga Springs, NY 128661164467684
- Heather Engelhart, MDSaratoga Springs, NY 128661730167362
- William Fisher, MDSaratoga Springs, NY 128661184651093
Common questions
What is Aaron Willen, DO's NPI number?
Aaron Willen, DO's National Provider Identifier (NPI) is 1316352776, issued on Jun 24, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Willen, DO located?
The NPPES record lists a practice address at 211 Church St, Saratoga Springs, NY, 12866. Phone: (518) 886-5957. Providers update this record themselves, so call before visiting.
How can I verify Aaron Willen, DO's license?
NPPES lists New York license number 302721, 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.
How much does Aaron Willen, DO prescribe under Medicare Part D?
In 2024, Aaron Willen, DO had 323 Medicare Part D claims for 234 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Aaron Willen, DO's MIPS final score?
The 2023 MIPS final score is 65.4 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.