Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jeffrey L St John, M.D.

Gastroenterology Physician in Pittsfield, MA · enumerated 2005.

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

National Provider Identifier

1750383170

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey L St John

Credential M.D.

Sex Male

Practice address 777 North St, Suite 203, Pittsfield, MA, 01201

Phone (413) 499-8590

Fax (413) 499-6410

Enumeration date Aug 15, 2005

Last updated in NPPES Jan 18, 2024

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 231178 (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
2146568	Medicaid	MA	-
000000043487	Other	MA	BMC HEALTHNET
02635367	Medicaid	NY	-
J41872	Other	MA	BCBSMA
AA96200	Other	MA	HARVARD PILGRIM HEALTH PLAN
1750383170	Other	MA	TUFTS HEALTH PLAN
7903586	Other	-	AETNA
3002785	Other	MA	MVP
41385	Other	MA	HEALTH NEW ENGLAND

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 Jeffrey St John?

Jeffrey St John 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 2024-01-18.