Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Harry Hartford, M.D.

Internal Medicine Physician in Pittsfield, MA · enumerated 2005.

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

National Provider Identifier

1669470456

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Registry record

Entity type Individual (Type 1)

Name Dr. Harry Hartford

Credential M.D.

Sex Male

Practice address 777 North St, 207, Pittsfield, MA, 01201

Phone (413) 499-8510

Fax (413) 499-8553

Enumeration date Jul 14, 2005

Last updated in NPPES Sep 20, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 39792 (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
043531502	Other	MA	CIGNA INDEMNITY
A56070	Other	MA	HARVARD
I22274	Other	MA	BCBS
039792	Other	MA	TUFTS
110212380	Other	MA	RAILROAD MEDICARE
112266	Other	MA	MVP
043531502	Other	MA	HMC PPO
12919	Other	MA	HEALTH NEW ENGLAND
3871944	Other	MA	CIGNA/HEALTHSOURCE HMO
000000020929	Other	MA	HEALTHNET
10034388	Other	MA	CSPITAL PHYSICIANS HEALTH
043531502	Other	MA	GIC INDEMNITY
0142573	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Harry Hartford?

The National Provider Identifier (NPI) for Harry Hartford is 1669470456, a Type 1 (individual) record in the CMS NPPES registry.

Where does Harry Hartford practice?

The practice location on file with NPPES is in Pittsfield, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-20.