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

Dr. Joyce L. Doncaster, PHD

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1649574153

Dr. Joyce L. Doncaster, PHD is an Addiction (Substance Use Disorder) Counselor in Katy, Texas. Practices as a sole proprietor. Licensed in Texas.

Licensed in
TX
In the registry since
2010
Specialties on file
3
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

23147 Tranquil Springs Ln
Katy, TX 77494-4257
Phone: (979) 450-8454
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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 25578 (TX)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 25578 (TX)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence 25578 (TX)

Record details

NPI number1649574153
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedDecember 28, 2010
Last updated in NPPESDecember 28, 2010

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