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

Corey Pieper, PHD

Individual provider Clinical Psychologist · NPI 1841758935

Corey Pieper, PHD is a Clinical Psychologist in Onamia, Minnesota. Qualified in 2017, 9 years ago. Practices with Mille Lacs Health System, a 46-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
9
Licensed in
MN
In the registry since
2019
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

200 Elm St N
Onamia, MN 56359-7901
Phone: (320) 532-3154
Fax: (320) 532-3111
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence LP6379 (MN)

Record details

NPI number1841758935
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMarch 7, 2019
Last updated in NPPESJuly 20, 2022
Certification dateJuly 20, 2022
Mailing address200 Elm St N, Onamia, MN 56359-7901

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Mille Lacs Health System — 46 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare