Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Steven Sean Callahan, PHD

Individual provider Psychologist · NPI 1275677643

Dr. Steven Sean Callahan, PHD is a Clinical Psychologist in Houston, Texas. Qualified in 1981, 45 years ago. Practices with Dr Glenn J Bricken and Assoc P C, an 8-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
45
Licensed in
TX
In the registry since
2007
Specialties on file
2
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

2450 Fondren Rd Ste 312
Houston, TX 77063-2323
Phone: (713) 789-7560
Fax: (713) 789-7351
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4101 Greenbriar St, Houston, TX 77098-5294 — (713) 526-5149

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 22630 (TX)
Psychologist Taxonomy 103T00000X · Licence 22630 (TX)

Record details

NPI number1275677643
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedFebruary 17, 2007
Last updated in NPPESJuly 6, 2026
Certification dateJuly 6, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Group practice Dr Glenn J Bricken And Assoc P C — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations12 on file with Medicare

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