Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John A Parker, DC

Chiropractor in Hanover, MA · enumerated 2006 · practices at John A Parker Dc PC.

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

National Provider Identifier

1427136746

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Registry record

Entity type Individual (Type 1)

Name Dr. John A Parker

Credential DC

Sex Male

Practice address Hanover, MA, 02339

Phone (781) 871-6166

Fax (781) 878-7822

Enumeration date Nov 2, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License MA 904 (MA) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
3095681	Other	MA	AETNA
115579	Other	MA	HEALTH PARTNERS
2667447	Other	MA	CIGNA
716121	Other	MA	TUFTS
Y35655	Other	MA	BLUE CROSS
352213	Other	MA	HPHC

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

What specialty is John Parker?

John Parker is registered in NPPES with the primary taxonomy of Chiropractor. 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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John A Parker Dc PC Chiropractor · Hanover, MA NPI 1295466381

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.