Nicholas Frederick Willison, DO
Anesthesiology Physician · Greensburg, PA
Nicholas Frederick Willison, DO is an anesthesiology physician with a practice address in Greensburg, Pennsylvania, and NPI 1174102826, issued on Apr 7, 2021. Check the license (Pennsylvania OS024586, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Nicholas Frederick Willison
- Credential
- DO
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- OS024586 PA
Self-reported in NPPES; status is on the state search - Practice location
- 532 W Pittsburgh St, Greensburg, PA 15601
- Phone
- (724) 832-4000
- Enumerated
- Apr 7, 2021
- Record last updated
- Aug 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20250616000789); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2021
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 2,481 in Pennsylvania → Look up another NPI →
Also registered at 532 W Pittsburgh St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Saghir Ahmad, MDPsychiatry Physician1073540878
- William Antonucci, CRNACertified Registered Nurse Anesthetist1104822345
- Gowri Arulanantham, MDPsychiatry Physician1003851916
- Nikhil AsherInternal Medicine Physician1831366129
- Allison Bakowicz, MPAS, PA-CMedical Physician Assistant1992982433
Verify Nicholas Frederick Willison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS024586Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $24.89
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Excela Health Physician Practices, IncGreensburg, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas Frederick Willison among 2,481 anesthesiology physician records in Pennsylvania
Nicholas Frederick Willison, DO is one of 2,481 anesthesiology physician records with a practice address in Pennsylvania. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 93% of them.
- NPI issued2021 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2021 · median 2005 among the 1,720 with a school on file
- Record last updated2025 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in Pennsylvania
There are 2,481 anesthesiology physician records in Pennsylvania.
All 2,481 in Pennsylvania → Every provider in Greensburg → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- David Beyer, MDGreensburg, PA 156011669478533
- Charles Defrancesco, MDGreensburg, PA 156011609855212
- Luke Doney, DOGreensburg, PA 156011750743449
- Sehar Gafoor, MDGreensburg, PA 156011750670964
- Benjamin Kristobak, M.D.Greensburg, PA 156011568800050
- Natalie Maida, D.O.Greensburg, PA 156011780827790
- Jessica O'Connor, D.O.Greensburg, PA 156011437460086
- Kyung Park, MDGreensburg, PA 156011770688269
Common questions
What is Nicholas Frederick Willison, DO's NPI number?
Nicholas Frederick Willison, DO's National Provider Identifier (NPI) is 1174102826, issued on Apr 7, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Frederick Willison, DO located?
The NPPES record lists a practice address at 532 W Pittsburgh St, Greensburg, PA, 15601. Phone: (724) 832-4000. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Frederick Willison, DO's license?
NPPES lists Pennsylvania license number OS024586, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.