Registry data as of Aug 27, 2026

Gretchen Barnas, M.D.

Psychiatry Physician · Kalamazoo, MI

Gretchen Barnas, M.D. is a psychiatry physician with a practice address in Kalamazoo, Michigan, and NPI 1013124114, issued on May 17, 2007. Check the license (Michigan 4301084808, as entered in NPPES) on the Michigan Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1013124114
Name
Gretchen Barnas
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
4301084808 MI
MD442333 PA
Self-reported in NPPES; status is on the state search
Practice location
1521 Gull RD, Kalamazoo, MI 49048
Phone
(269) 226-6653
Enumerated
May 17, 2007
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1521 Gull RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amanda Adams, FNPFamily Nurse Practitioner1912433582
  2. Ahsan Alam, MDInternal Medicine Physician1750943981
  3. Donna AndresenSocial Worker1003023730
  4. Nicholas Badgley, AGACNPCritical Care Medicine Nurse Practitioner1366921520
  5. Hannah Bagley, LLMSWMental Health Counselor1114595378
  6. Brian BeauchampClinical Social Worker1245450048

Verify Gretchen Barnas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine
    Search for license 4301084808    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

68% fewer Medicare Part D claims than the average psychiatry physician in 2024

320 Medicare Part D claims for 26 beneficiaries, against an average of 1,010 among the 32,287 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Gretchen Barnas320
  2. Specialty average1,010

Most prescribed

  1. Divalproex Sodium32 claims
  2. Clozapine28 claims
  3. Benztropine Mesylate27 claims
  4. Thiothixene20 claims
  5. Gabapentin19 claims
  6. Fluvoxamine Maleate15 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

One hospital or facility affiliation

  1. State OF Michigan Office OF Financial ManagementKalamazoo, MI

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Psychiatry Physician providers in Michigan

There are 1,621 psychiatry physician records in Michigan.

All 1,621 in Michigan → Every provider in Kalamazoo →

Other psychiatry physician records in Michigan

  1. Aisha Abbasi, M.D.West Bloomfield, MI1609045913
  2. Farha Abbasi, M.D.East Lansing, MI1689881781
  3. Tariq Abbasi, MDSouthfield, MI1326133208
  4. Nicholas Abbey, MDGrand Rapids, MI1174052187
  5. Salman Abdul MajeedGrand Rapids, MI1144896218
  6. James Abelson, MD, PHDAnn Arbor, MI1316019821
  7. Nicholas Abid, D.O.Holland, MI1295743094
  8. Ahmad Abu-Zahra, MDDearborn, MI1316737349
  9. Nana Achampong, M.D.East Lansing, MI1619389897
  10. Eric Achtyes, MDGrand Rapids, MI1780665976

Common questions

What is Gretchen Barnas, M.D.'s NPI number?

Gretchen Barnas, M.D.'s National Provider Identifier (NPI) is 1013124114, issued on May 17, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Gretchen Barnas, M.D. located?

The NPPES record lists a practice address at 1521 Gull RD, Kalamazoo, MI, 49048. Phone: (269) 226-6653. Providers update this record themselves, so call before visiting.

How can I verify Gretchen Barnas, M.D.'s license?

NPPES lists Michigan license number 4301084808, as entered by the provider. Search the Michigan Board of Medicine at https://www.michigan.gov/lara/bureau-list/bpl/health/hp-lic-health-prof/medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gretchen Barnas, M.D. prescribe under Medicare Part D?

In 2024, Gretchen Barnas, M.D. had 320 Medicare Part D claims for 26 beneficiaries; the average among psychiatry physician prescribers was 1,010. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.