Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Benjamin T Mast, PHD

Individual provider Clinical Psychologist · NPI 1306011671

Dr. Benjamin T Mast, PHD is a Clinical Psychologist in Louisville, Kentucky. Qualified in 2002, 24 years ago. Practices with University of Louisville Physicians Inc, a 1,433-clinician group and accepts Medicare assignment. Licensed in Kentucky.

Years since qualifying
24
Licensed in
KY
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

204 E Market St
Louisville, KY 40202-1218
Phone: (502) 588-4340
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence KY-1464 (KY)

Record details

NPI number1306011671
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 28, 2008
Last updated in NPPESMay 29, 2020
Certification dateMay 29, 2020

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice University Of Louisville Physicians Inc — 1433 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients30
Services billed 140 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at University of Louisville Physicians Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1433 clinicians in the practice; 12 are shown here.

Other providers in Louisville