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

Kristen Erin Mack, APRN, NP-C

Individual provider Family Nurse Practitioner · NPI 1477905214

Kristen Erin Mack, APRN, NP-C is a Nurse Practitioner in Fort Smith, Arkansas. Qualified in 2016, 10 years ago. Practices with Mercy Clinic Fort Smith Communities, a 350-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arkansas.

Years since qualifying
10
Licensed in
AR
In the registry since
2016
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
NP-C — Nurse Practitioner, Certified
A nurse practitioner certified by the AANP.

See every abbreviation used in this directory →

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Practice location Address checks out

7301 Rogers Ave
Fort Smith, AR 72903-4100
Phone: (479) 314-6240
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3117 S 70th St, Fort Smith, AR 72903-5017 — (479) 785-9400

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence A004798 (AR)

Record details

NPI number1477905214
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN , NP-C
Sole proprietorNo
NPI enumeratedJuly 5, 2016
Last updated in NPPESNovember 17, 2025
Certification dateNovember 17, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Mercy Clinic Fort Smith Communities — 350 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 patients159
Services billed 654 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Mercy Clinic Fort Smith Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 350 clinicians in the practice; 12 are shown here.

Other providers in Fort Smith