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Nicholas St. John, PH.D.
NPI 1508921321 · Psychologist · Palo Alto, CA
Nicholas St. John, PH.D. is a Psychologist provider in Palo Alto, CA (NPI 1508921321).
Provider details
- NPI number
- 1508921321
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY#19784 (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
750 Welch Rd
Suite 212
Palo Alto, CA 94304-1507
Phone: (650) 724-2165
Fax: (650) 724-6500
Street-level locationGet directions
Mailing address
750 Welch Rd
Palo Alto, CA 94304-1507
Registry dates
- Enumerated
- 2006-12-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Nicholas St. John's NPI number?
- Nicholas St. John's National Provider Identifier (NPI) is 1508921321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas St. John's specialty?
- Nicholas St. John is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Nicholas St. John located?
- Nicholas St. John's practice location on file with NPPES is 750 Welch Rd, Palo Alto, CA 94304-1507.
- What is Nicholas St. John's phone number?
- The practice phone number listed in the NPPES registry for Nicholas St. John is (650) 724-2165.
- Is Nicholas St. John's NPI active?
- Yes — Nicholas St. John's NPI (1508921321) 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.