OrganizationActive
Kathryn Sexton, M.D., Martin Joffe, M.D. & Katrina Urbach, M.D, Medic
NPI 1083743033 · Pediatrics Physician · Greenbrae, CA
Provider details
- NPI number
- 1083743033
- Entity type
- Organization
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Martin Joffe, Managing Partner(415) 461-5436
- License
- A35507 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
1000 S Eliseo Drive
Suite 1a
Greenbrae, CA 94904-2133
Phone: (415) 461-5436
Fax: (415) 461-1006
Street-level locationGet directions
Mailing address
Po Box 1340
Suisun City, CA 94585-4340
Registry dates
- Enumerated
- 2007-03-05
- Last updated
- 2011-04-12
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.