Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alliric I. Willis, M.D.

Surgical Oncology Physician in Philadelphia, PA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1366475287

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Registry record

Entity type Individual (Type 1)

Name Alliric I. Willis

Credential M.D.

Sex Male

Practice address 1100 Walnut St, Suite 500, Philadelphia, PA, 19107

Phone (215) 955-6750

Fax (215) 823-8222

Enumeration date Jul 7, 2006

Last updated in NPPES Aug 17, 2015

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License MD424463 (PA) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD424463 (PA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
P00385401	Other	PA	RAILROAD MEDICARE
1621481	Other	PA	PERSONAL CHOICE
2298641000	Other	PA	KEYSTONE IBC
1621481	Other	PA	HIGHMARK BLUE SHIELD
30032812	Other	PA	KEYSTONE MERCY
1016680610001	Medicaid	PA	-
1016680610004	Medicaid	PA	-
35488	Other	PA	HEALTH PARTNERS
5810126	Other	PA	AETNA HMO

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alliric Willis?

Alliric Willis is registered in NPPES with the primary taxonomy of Surgical Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-17.