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

Dr. John Joseph Siefke, PHD

Individual provider Clinical Psychologist · NPI 1548901853

Dr. John Joseph Siefke, PHD is a Clinical Psychologist in Bozeman, Montana. Practices as a sole proprietor and works from 2 locations. Licensed in Montana.

Licensed in
MT
In the registry since
2022
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

1902 W Dickerson St Ste 208
Bozeman, MT 59718-6852
Phone: (406) 295-6899
Show map & directions

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

Additional practice locations (1)

  • 1302 Glider Ln Unit A, Belgrade, MT 59714-9406 — (760) 954-5140

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY-PSY-LIC-2508 (MT)

Record details

NPI number1548901853
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 2, 2022
Last updated in NPPESMay 31, 2022
Certification dateMay 31, 2022
Mailing address1902 W Dickerson St Ste 208, Bozeman, MT 59718-6852

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