Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John B Hein, MD

Allergy & Immunology (Internal Medicine) Physician in Newburyport, MA · enumerated 2006.

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

National Provider Identifier

1649298050

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Registry record

Entity type Individual (Type 1)

Name John B Hein

Credential MD

Sex Male

Practice address 260 Merrimac St, Newburyport, MA, 01950

Phone (978) 499-7400

Fax (978) 499-7488

Enumeration date Jul 17, 2006

Last updated in NPPES May 27, 2011

Taxonomy & licenses

207RA0201X Allergy & Immunology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 234680 (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
110079116A	Medicaid	MA	-
AA114498	Other	MA	HPHC
1649298050	Other	MA	AETNA
1649298050	Other	MA	PHCS
95442501	Other	MA	NETWORK HEALTH
J42770	Other	MA	BCBS
1649298050	Other	MA	ANTHEM
1649298050	Other	MA	BOSTON MEDICAL CENTER HEALTH PLAN
1649298050	Other	MA	UNITED HEALTHCARE
30207664	Medicaid	NH	-
497152	Other	MA	TUFTS
0044381	Other	MA	NEIGHBORHOOD HEALTH PLAN
0286562	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is John Hein?

John Hein is registered in NPPES with the primary taxonomy of Allergy & Immunology (Internal Medicine) 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 2011-05-27.