Thomas Patrick Howell, PH.D
Clinical Psychologist · Tustin, CA
Thomas Patrick Howell, PH.D is a clinical psychologist with a practice address in Tustin, California, and NPI 1639364284, issued on Sep 6, 2007. Check the license (California PSY-10340, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Thomas Patrick Howell
- Credential
- PH.D
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY-10340 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1254 Irvine Blvd, Tustin, CA 92780
- Phone
- (714) 544-1622
- Enumerated
- Sep 6, 2007
- Record last updated
- Sep 6, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (714) 544-9766
- Entity
- Type 1 · individual
Also registered at 1254 Irvine Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas Patrick Howell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY-10340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31 clinical psychologist records list a practice address in Tustin
They are 31 of the 2,221 NPPES records with a practice address in Tustin, and 12,647 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 31 in Tustin → All 12,647 in California → Every provider in Tustin →
Other clinical psychologist records in California
- Tanya Aaen, PH.D.Martinez, CA1477518561
- Jack Aamot, PSY.D.Napa, CA1770711210
- Brian Abary, PSY.DLos Angeles, CA1538354832
- Tatevik Abaryan, PH.D.Pacoima, CA1952682619
- Liana Abascal, PH.D.San Diego, CA1073740569
- Jessica Abdalla, PHDWalnut Creek, CA1558069211
- Mohamed Abdallah, PSY.DEl Centro, CA1912430851
- Megan Abdolrashidi, PSYDGilroy, CA1093293094
- Keri Abdullah, PH.D.San Diego, CA1699840587
- Qutayba Abdullatif, PH.D.Pasadena, CA1134667751
Common questions
What is Thomas Patrick Howell, PH.D's NPI number?
Thomas Patrick Howell, PH.D's National Provider Identifier (NPI) is 1639364284, issued on Sep 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Patrick Howell, PH.D located?
The NPPES record lists a practice address at 1254 Irvine Blvd, Tustin, CA, 92780. Phone: (714) 544-1622. Providers update this record themselves, so call before visiting.
How can I verify Thomas Patrick Howell, PH.D's license?
NPPES lists California license number PSY-10340, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.