Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brian P Sullivan, MD

Obstetrics & Gynecology Physician in Hanover, MA · enumerated 2005.

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

National Provider Identifier

1699750265

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Brian P Sullivan

Credential MD

Sex Male

Practice address 135 Webster St, Hanover, MA, 02339

Phone (781) 878-7020

Fax (781) 871-3590

Enumeration date Dec 7, 2005

Last updated in NPPES Apr 24, 2009

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 74990 (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
3183238	Medicaid	MA	-
1025541	Other	-	AETNA
J12638	Other	MA	BCBS
13867	Other	MA	HPHC
139146	Other	-	CIGNA
74990	Other	-	TUFTS

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

Is NPI 1699750265 active?

Yes, as of the latest NPPES snapshot, NPI 1699750265 is active (record last updated 2009-04-24).

How do I verify Brian Sullivan's NPI record?

Cross-check NPI 1699750265 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-04-24.