Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nancy Lynn Chapin, M.D.

Pediatrics Physician in Brockton, MA · enumerated 2005.

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

National Provider Identifier

1528050556

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Registry record

Entity type Individual (Type 1)

Name Nancy Lynn Chapin

Credential M.D.

Sex Female

Practice address 370 Oak St, Suite A, Brockton, MA, 02301

Phone (508) 584-1234

Fax (508) 584-0230

Enumeration date Aug 16, 2005

Last updated in NPPES Dec 5, 2011

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 56753 (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
20194	Other	MA	HARVARD PILGRIM
3018938	Medicaid	MA	-
12-01056	Other	MA	UNITED HEALTH CARE
J06253	Other	MA	BLUE CROSS BLUE SHIELD
056753	Other	MA	TUFTS HEALTH PLAN
92437	Other	MA	AETNA/USHC
3297007	Other	MA	CIGNA

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

How do I verify Nancy Chapin's NPI record?

Cross-check NPI 1528050556 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1528050556 active?

Yes, as of the latest NPPES snapshot, NPI 1528050556 is active (record last updated 2011-12-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-05.