Stephen Mayer, PA-C
NPI 1285979815 · Physician Assistant · San Jose, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Mayer, PA-C is a Physician Assistant provider in San Jose, CA (NPI 1285979815).
Provider details
- NPI number
- 1285979815
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 13437 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2012-12-08
- Last updated
- 2015-09-10
Frequently asked questions
- What is Stephen Mayer's NPI number?
- Stephen Mayer's National Provider Identifier (NPI) is 1285979815, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Mayer's specialty?
- Stephen Mayer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Mayer located?
- Stephen Mayer's practice location on file with NPPES is 1893 Monterey Hwy, San Jose, CA 95112-6136.
- What is Stephen Mayer's phone number?
- The practice phone number listed in the NPPES registry for Stephen Mayer is (408) 288-3800.
- Does Stephen Mayer accept Medicare?
- Stephen Mayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Mayer's NPI active?
- Yes — Stephen Mayer's NPI (1285979815) is active in the NPPES registry as of the last update on 2015-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.