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

Dr. John Larson, PHD

Individual provider School Psychologist · NPI 1982152609

Dr. John Larson, PHD is a School Psychologist in Spearfish, South Dakota. Practices as a sole proprietor. Licensed in South Dakota.

Licensed in
SD
In the registry since
2016
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

525 E Illinois St
Spearfish, SD 57783-2521
Phone: (605) 717-1219
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

School Psychologist (primary) Taxonomy 103TS0200X · Licence 73165-2 (SD)

Record details

NPI number1982152609
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedSeptember 12, 2016
Last updated in NPPESSeptember 12, 2016
Mailing address525 E Illinois St, Spearfish, SD 57783-2521

Other providers in Spearfish