Alliric I. Willis, M.D.
Surgical Oncology Physician · Philadelphia, PA
Alliric I. Willis, M.D. is a surgical oncology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1366475287, issued on Jul 7, 2006. Check the license (Pennsylvania MD424463, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Alliric I. Willis
- Credential
- M.D.
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License number
- MD424463 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Walnut St, Philadelphia, PA 19107
- Phone
- (215) 955-6750
- Enumerated
- Jul 7, 2006
- Record last updated
- Aug 17, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (215) 823-8222
- Medicaid IDs
- 1016680610001 PA
1016680610004 PA - Medicare enrollment
- Enrolled (PECOS I20040804001480); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1996
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 92 in Pennsylvania → Look up another NPI →
Also registered at 1100 Walnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kylie Borden, MSGCGenetic Counselor (M.S.)1306517099
- George Bradford, M.D.Family Medicine Physician1558330324
- Shawnna Cannaday, APNFamily Nurse Practitioner1316225857
- Maryalice Cheney, M.D.Colon & Rectal Surgery Physician1952464877
- Karen Chojnacki, M.D.Surgery Physician1083630685
Verify Alliric I. Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD424463Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average surgical oncology physician in 2024
30 Medicare Part D claims for 15 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Levothyroxine Sodium11 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.
Bills Medicare through one group practice
- Jefferson University PhysiciansPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alliric I. Willis among 92 surgical oncology physician records in Pennsylvania
Alliric I. Willis, M.D. is one of 92 surgical oncology physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 64% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1996 · median 2004 among the 68 with a school on file
- Record last updated2015 · 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 2086X0206X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Oncology Physician providers in Pennsylvania
There are 92 surgical oncology physician records in Pennsylvania.
All 92 in Pennsylvania → Every provider in Philadelphia → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Mark Etherington, MDPhiladelphia, PA 191071841685393
- Richard Zheng, M.D.Philadelphia, PA 191071265828438
- Dahlia Sataloff, M.D.Philadelphia, PA 191061710986336
- Robert Krouse, MDPhiladelphia, PA 191041740388669
- Jennifer ZhangPhiladelphia, PA 191041508160300
- Richard Bleicher, MDPhiladelphia, PA 191111275584609
- Stephanie Greco, M.D.Philadelphia, PA 191111205154341
- Andrew Gumbs, M.DPhiladelphia, PA 191111487849725
Common questions
What is Alliric I. Willis, M.D.'s NPI number?
Alliric I. Willis, M.D.'s National Provider Identifier (NPI) is 1366475287, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alliric I. Willis, M.D. located?
The NPPES record lists a practice address at 1100 Walnut St, Philadelphia, PA, 19107. Phone: (215) 955-6750. Providers update this record themselves, so call before visiting.
How can I verify Alliric I. Willis, M.D.'s license?
NPPES lists Pennsylvania license number MD424463, 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.
How much does Alliric I. Willis, M.D. prescribe under Medicare Part D?
In 2024, Alliric I. Willis, M.D. had 30 Medicare Part D claims for 15 beneficiaries; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.
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.