Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gary David Grossfeld, M.D.

Urology Physician in Greenbrae, CA · enumerated 2006.

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

National Provider Identifier

1295754851

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Gary David Grossfeld

Credential M.D.

Sex Male

Practice address 1000 S. Eliseo Dr., Suite #201, Greenbrae, CA, 94904

Phone (415) 461-4000

Enumeration date Jul 18, 2006

Last updated in NPPES Jun 29, 2010

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License G72165 (CA) 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
00G721651	Other	CA	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.

Read the full guide → Validate an NPI →

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 Gary Grossfeld?

Gary Grossfeld 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-29.