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

Mark Simpson, PHD

Individual provider Clinical Psychologist · NPI 1831147446

Mark Simpson, PHD is a Clinical Psychologist in APO, Armed Forces Europe. Licensed in Colorado. Registered with an NPI since 2006.

Licensed in
CO
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 may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

Landstuhl Regional Medical Ctr Unit 33100
APO, AE 09180-3100
Phone: (314) 590-1066

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 2738 (CO)

Record details

NPI number1831147446
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 5, 2006
Last updated in NPPESFebruary 7, 2022
Certification dateJanuary 28, 2022
Mailing addressLandstuhl Regional Medical Center, Unit 33100, Apo, AE 09180-3100

Other providers in APO