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

James Kenneth Herstoff, M.D.

Dermatology Physician in Newport, RI · enumerated 2005.

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

National Provider Identifier

1710980461

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Registry record

Entity type Individual (Type 1)

Name James Kenneth Herstoff

Credential M.D.

Sex Male

Practice address Newport, RI, 02840

Phone (401) 849-2223

Enumeration date May 25, 2005

Last updated in NPPES Dec 3, 2007

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

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License MD04667 (RI) 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
900709	Medicaid	RI	-
0000000709	Other	RI	BLUE CROSS BLUE SHIELD RI

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

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.

What specialty is James Herstoff?

James Herstoff is registered in NPPES with the primary taxonomy of Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-03.