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

Dr. William Charles Isler III, PHD

Individual provider Health Service Psychologist · NPI 1699838409

Dr. William Charles Isler III, PHD is a Health Service Psychologist in Lackland AFB, Texas. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
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

1100 Wilford Hall Loop Bldg 4554
Lackland AFB, TX 78236-5638
Phone: (210) 292-6225
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 2313 (WA)

Record details

NPI number1699838409
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedDecember 19, 2006
Last updated in NPPESSeptember 11, 2019