Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Annette H Chen, M.D.

Gynecologic Oncology Physician in Worcester, MA · enumerated 2005.

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

National Provider Identifier

1215928593

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Registry record

Entity type Individual (Type 1)

Name Dr. Annette H Chen

Credential M.D.

Sex Female

Practice address 119 Belmont St, Department of Obstetrics & Gynecology, Worcester, MA, 01605

Phone (508) 334-1160

Enumeration date Nov 4, 2005

Last updated in NPPES Dec 13, 2021

Taxonomy & licenses

207VX0201X Gynecologic Oncology Physician Allopathic & Osteopathic Physicians · License 81912 (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
3152146	Medicaid	MA	-

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 Annette Chen?

Annette Chen is registered in NPPES with the primary taxonomy of Gynecologic 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 2021-12-13.