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Thomas Howell, PH.D
NPI 1639364284 · Clinical Psychologist · Tustin, CA
Thomas Howell, PH.D is a Clinical Psychologist provider in Tustin, CA (NPI 1639364284).
Provider details
- NPI number
- 1639364284
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY-10340 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
1254 Irvine Blvd
Suite 240
Tustin, CA 92780-3509
Phone: (714) 544-1622
Fax: (714) 544-9766
Street-level locationGet directions
Mailing address
1254 Irvine Blvd
Tustin, CA 92780-3509
Registry dates
- Enumerated
- 2007-09-06
- Last updated
- 2007-09-06
Frequently asked questions
- What is Thomas Howell's NPI number?
- Thomas Howell's National Provider Identifier (NPI) is 1639364284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Howell's specialty?
- Thomas Howell is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Thomas Howell located?
- Thomas Howell's practice location on file with NPPES is 1254 Irvine Blvd, Tustin, CA 92780-3509.
- What is Thomas Howell's phone number?
- The practice phone number listed in the NPPES registry for Thomas Howell is (714) 544-1622.
- Is Thomas Howell's NPI active?
- Yes — Thomas Howell's NPI (1639364284) is active in the NPPES registry as of the last update on 2007-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.