Mark Westerfield, PSYD
NPI 1710505326 · Clinical Child & Adolescent Psychologist · Palo Alto, CA
Mark Westerfield, PSYD is a Clinical Child & Adolescent Psychologist provider in Palo Alto, CA (NPI 1710505326).
Provider details
- NPI number
- 1710505326
- Entity type
- Individual
- Primary specialty
- Clinical Child & Adolescent PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 31069 (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
5 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
- 2020-07-09
- Last updated
- 2020-07-09
- Certified
- 2020-07-09
Frequently asked questions
- What is Mark Westerfield's NPI number?
- Mark Westerfield's National Provider Identifier (NPI) is 1710505326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Westerfield's specialty?
- Mark Westerfield is listed in the NPPES registry with a primary specialty of Clinical Child & Adolescent Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Westerfield located?
- Mark Westerfield's practice location on file with NPPES is 630 University Ave Ste a, Palo Alto, CA 94301-2019.
- What is Mark Westerfield's phone number?
- The practice phone number listed in the NPPES registry for Mark Westerfield is (650) 714-7898.
- Is Mark Westerfield's NPI active?
- Yes — Mark Westerfield's NPI (1710505326) is active in the NPPES registry as of the last update on 2020-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.