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

Individual provider Psychologist · NPI 1508816422

Stephen B Gemmell, PHD is a Clinical Psychologist in Fayetteville, Arkansas. Qualified in 1999, 27 years ago. Practices with Washington Regional Medical System, a 240-clinician group and accepts Medicare assignment. Licensed in Arkansas.

Years since qualifying
27
Licensed in
AR
In the registry since
2006
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

12 E Appleby Rd Ste 101
Fayetteville, AR 72703-3901 Not confirmed with CMS for 15 years — call before visiting
Phone: (479) 463-4444
Fax: (479) 463-4499
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 0010P (AR)

Record details

NPI number1508816422
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 11, 2006
Last updated in NPPESApril 25, 2011

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Washington Regional Medical System — 240 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients256
Services billed 1,641 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Washington Regional Medical System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 240 clinicians in the practice; 12 are shown here.

Other providers in Fayetteville