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

Dr. Douglas John Wessel, PHD

Individual provider Psychologist · NPI 1598754806

Dr. Douglas John Wessel, PHD is a Psychologist in Spearfish, South Dakota. Licensed in South Dakota. Registered with an NPI since 2005.

Licensed in
SD
In the registry since
2005
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

1445 N Ave
Spearfish, SD 57783-1552
Phone: (605) 644-4170
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 176 (SD)

Record details

NPI number1598754806
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedOctober 19, 2005
Last updated in NPPESJuly 13, 2026
Mailing addressPo Box 743, Spearfish, SD 57783-0743