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Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic

Pediatrics Physician in Greenbrae, CA · enumerated 2007 · authorized official Martin Joffe, Managing Partner.

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

National Provider Identifier

1083743033

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Registry record

Entity type Organization (Type 2)
Legal business name Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic
Practice address 1000 S Eliseo Drive, Suite 1a, Greenbrae, CA, 94904
Phone (415) 461-5436
Fax (415) 461-1006
Enumeration date Mar 5, 2007
Last updated in NPPES Apr 12, 2011

Taxonomy & classification

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A35507 (CA) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Martin Joffe
Title Managing Partner
Phone (415) 461-5436

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

Who is the authorized official for Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic?
NPPES lists Martin Joffe (Managing Partner) as the authorized official for this organization.
What is the NPI number for Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic?
The NPI for Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic is 1083743033, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-12.