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

Mariah Barnes, MD

Individual provider Emergency Medicine Physician · NPI 1093197030

Mariah Barnes, MD practises Emergency Medicine in Grand Rapids, Michigan. Graduated from Michigan State University College of Human Medicine in 2015, 11 years ago. Practices with Ecs Western Michigan PC, a 201-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
11
Trained at
Michigan State University College of Human Medicine
Licensed in
MI
In the registry since
2015
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 Michigan St NE
Grand Rapids, MI 49503
Phone: (616) 391-1730
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 4301107835 (MI)
Anesthesiology Physician Taxonomy 207L00000X · Licence 4301107835 (MI)

Record details

NPI number1093197030
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 26, 2015
Last updated in NPPESFebruary 21, 2025
Certification dateFebruary 21, 2025

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 2015 (11 years in practice)
Group practice Ecs Western Michigan Pc — 201 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 patients215
Services billed 238 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Ecs Western Michigan PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 201 clinicians in the practice; 12 are shown here.

Other providers in Grand Rapids