Stephen J Sommer MD a Professional Corporation
NPI 1053478255 · Family Medicine Physician · Oakland, CA
Stephen J Sommer MD a Professional Corporation is a Family Medicine Physician organization in Oakland, CA (NPI 1053478255).
Provider details
- NPI number
- 1053478255
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Stephen Sommer, President(510) 654-2494
- License
- C31412 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2007-01-03
- Last updated
- 2009-01-26
Frequently asked questions
- What is Stephen J Sommer MD a Professional Corporation's NPI number?
- Stephen J Sommer MD a Professional Corporation's National Provider Identifier (NPI) is 1053478255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Stephen J Sommer MD a Professional Corporation?
- Stephen J Sommer MD a Professional Corporation is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen J Sommer MD a Professional Corporation located?
- Stephen J Sommer MD a Professional Corporation's practice location on file with NPPES is 4333 Piedmont Ave, Oakland, CA 94611-4715.
- What is Stephen J Sommer MD a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Stephen J Sommer MD a Professional Corporation is (510) 654-2494.
- Who is the authorized official for Stephen J Sommer MD a Professional Corporation?
- The authorized official listed on Stephen J Sommer MD a Professional Corporation's NPPES record is Stephen Sommer, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Stephen J Sommer MD a Professional Corporation's NPI active?
- Yes — Stephen J Sommer MD a Professional Corporation's NPI (1053478255) is active in the NPPES registry as of the last update on 2009-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.