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

Dr. Steven T Johnson, PHD

Individual provider Clinical Neuropsychologist · NPI 1215054952

Dr. Steven T Johnson, PHD is a Clinical Psychologist in Holland, Michigan. Qualified in 1997, 29 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
29
Licensed in
MI
In the registry since
2007
Specialties on file
2
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

493 Century Ln
Holland, MI 49423-4286
Phone: (616) 355-7190
Fax: (616) 355-9820
Show map & directions

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

Specialties & licences

Clinical Neuropsychologist (primary) Taxonomy 103G00000X · Licence 6301007340 (MI)
Psychologist Taxonomy 103T00000X · Licence 6301007340 (MI)

Record details

NPI number1215054952
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMarch 26, 2007
Last updated in NPPESSeptember 11, 2025
Mailing address16165 Ransom St, Holland, MI 49424-5531

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1997 (29 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount