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James Chessing, PHD
NPI 1326142407 · Clinical Psychologist · San Mateo, CA
James Chessing, PHD is a Clinical Psychologist provider in San Mateo, CA (NPI 1326142407).
Provider details
- NPI number
- 1326142407
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- PSY14087 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 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
334 N San Mateo Dr
San Mateo, CA 94401-2514
Phone: (650) 342-4557
Street-level locationGet directions
Mailing address
334 N San Mateo Dr
San Mateo, CA 94401-2514
Registry dates
- Enumerated
- 2006-09-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Chessing's NPI number?
- James Chessing's National Provider Identifier (NPI) is 1326142407, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Chessing's specialty?
- James Chessing is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is James Chessing located?
- James Chessing's practice location on file with NPPES is 334 N San Mateo Dr, San Mateo, CA 94401-2514.
- What is James Chessing's phone number?
- The practice phone number listed in the NPPES registry for James Chessing is (650) 342-4557.
- Is James Chessing's NPI active?
- Yes — James Chessing's NPI (1326142407) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.