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

Dr. Mariia Nikolaeva, MD

Individual provider Internal Medicine Physician · NPI 1619522125

Dr. Mariia Nikolaeva, MD is an Internal Medicine in Fort Smith, Arkansas. Qualified in 2018, 8 years ago. Practices with Mercy Clinic Fort Smith Communities, a 350-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arkansas and Massachusetts.

Years since qualifying
8
Licensed in
AR, MA
In the registry since
2019
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

7001 Rogers Ave Ste 401A
Fort Smith, AR 72903-4034
Phone: (479) 314-4650
Fax: (479) 452-9459
Show map & directions

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

Additional practice locations (1)

  • 736 Cambridge St, Brighton, MA 02135-2907 — (617) 789-3000

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence E-18517 (AR)
Internal Medicine Physician Taxonomy 207R00000X · Licence E-18517 (AR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 280821 (MA)

Record details

NPI number1619522125
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 2, 2019
Last updated in NPPESAugust 6, 2025
Certification dateAugust 6, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 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

Other providers in Fort Smith