Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Thomas Patrick Howell, PHD

Individual provider Clinical Psychologist · NPI 1639364284

Dr. Thomas Patrick Howell, PHD is a Clinical Psychologist in Tustin, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1254 Irvine Blvd Ste 240
Tustin, CA 92780-3509
Phone: (714) 544-1622
Fax: (714) 544-9766
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY-10340 (CA)

Record details

NPI number1639364284
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedSeptember 6, 2007
Last updated in NPPESSeptember 6, 2007
Mailing address1254 Irvine Blvd, Suite 240, Tustin, CA 92780-3509

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