Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Wankin J Yu, MD

Gastroenterology Physician in Leominster, MA · enumerated 2006.

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

National Provider Identifier

1477639656

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Registry record

Entity type Individual (Type 1)

Name Dr. Wankin J Yu

Credential MD

Sex Male

Practice address 105 Erdman Way, Leominster, MA, 01453

Phone (978) 466-7800

Fax (978) 466-9333

Enumeration date Oct 31, 2006

Last updated in NPPES Jan 21, 2009

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 059212 (MA) Primary

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
110026291	Other	-	RAILROAD MEDICARE
30299	Other	-	HARVARD PILGRIM
J07107	Other	-	BLUE CROSS
3033970	Medicaid	MA	-
5090	Other	-	FALLON COMMUNITY
059212	Other	-	TUFTS

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Wankin Yu?

Wankin Yu is registered in NPPES with the primary taxonomy of Gastroenterology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-21.