Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Sigman, MD

Urology Physician in Providence, RI · enumerated 2006.

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

National Provider Identifier

1114038155

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Registry record

Entity type Individual (Type 1)

Name Mark Sigman

Credential MD

Sex Male

Practice address 2 Dudley St, Suite 185, Providence, RI, 02905

Phone (401) 421-0710

Fax (401) 421-0796

Enumeration date Aug 31, 2006

Last updated in NPPES Feb 11, 2015

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License MD07533 (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
9006526	Medicaid	RI	-
20348	Other	RI	BLUE SHIELD

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 Mark Sigman?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-11.