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

Dr. Mary L. Trevino, PHD

Individual provider Health Service Psychologist · NPI 1851428957

Dr. Mary L. Trevino, PHD is a Health Service Psychologist in Seguin, Texas. Practices as a sole proprietor. Licensed in Texas.

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.

See every abbreviation used in this directory →

Practice location Address checks out

261 Turtle Ln
Seguin, TX 78155-3142
Phone: (210) 250-1298
Fax: (830) 433-4790
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Health Service Psychologist (primary) Taxonomy 103TH0100X · Licence 11530 (TX)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence 11530 (TX)

Record details

NPI number1851428957
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedFebruary 27, 2007
Last updated in NPPESMarch 4, 2011