Robert Riddell
NPI 1053864645 · Clinical Psychologist · San Francisco, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Riddell is a Clinical Psychologist provider in San Francisco, CA (NPI 1053864645).
Provider details
- NPI number
- 1053864645
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY28463 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 3641 Sacramento StSan Francisco, CA 94118-1722Phone: (415) 538-0377
Registry dates
- Enumerated
- 2016-07-29
- Last updated
- 2019-05-04
Frequently asked questions
- What is Robert Riddell's NPI number?
- Robert Riddell's National Provider Identifier (NPI) is 1053864645, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Riddell's specialty?
- Robert Riddell is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Robert Riddell located?
- Robert Riddell's practice location on file with NPPES is 3632 Sacramento St Ste 5, San Francisco, CA 94118-1710.
- What is Robert Riddell's phone number?
- The practice phone number listed in the NPPES registry for Robert Riddell is (415) 967-0840.
- Does Robert Riddell accept Medicare?
- Robert Riddell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Riddell's NPI active?
- Yes — Robert Riddell's NPI (1053864645) is active in the NPPES registry as of the last update on 2019-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.