Stephen Soto De Mayor, PA
NPI 1851450571 · Physician Assistant · Riverside, CA
Stephen Soto De Mayor, PA is a Physician Assistant provider in Riverside, CA (NPI 1851450571).
Provider details
- NPI number
- 1851450571
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- PA11778 (CA)
Specialties & taxonomies
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
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
- 2006-12-08
- Last updated
- 2008-09-23
Frequently asked questions
- What is Stephen Soto De Mayor's NPI number?
- Stephen Soto De Mayor's National Provider Identifier (NPI) is 1851450571, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Soto De Mayor's specialty?
- Stephen Soto De Mayor is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Soto De Mayor located?
- Stephen Soto De Mayor's practice location on file with NPPES is 10800 Magnolia Ave, Riverside, CA 92505-3043.
- What is Stephen Soto De Mayor's phone number?
- The practice phone number listed in the NPPES registry for Stephen Soto De Mayor is (909) 353-2000.
- Is Stephen Soto De Mayor's NPI active?
- Yes — Stephen Soto De Mayor's NPI (1851450571) is active in the NPPES registry as of the last update on 2008-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.