Gretchen G. Barnas, M.D.
Psychiatry Physician · Kalamazoo, MI
Gretchen G. 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 (LARA); the Medicare figures below come from public CMS files.
- Name
- Gretchen G. 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
- Record last updated
- May 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (269) 226-8094
- Medicare enrollment
- Enrolled (PECOS I20090915000451); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2004
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,729 in Michigan → Look up another NPI →
Also registered at 1521 Gull RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amanda Adams, FNPFamily Nurse Practitioner1912433582
- Ahsan Alam, MDInternal Medicine Physician1750943981
- Donna AndresenSocial Worker1003023730
- Nicholas Badgley, AGACNPCritical Care Medicine Nurse Practitioner1366921520
- Hannah Bagley, LLMSWMental Health Counselor1114595378
- Brian BeauchampClinical Social Worker1245450048
Verify Gretchen G. Barnas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301084808Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Divalproex Sodium32 claims
- Clozapine28 claims
- Benztropine Mesylate27 claims
- Thiothixene20 claims
- Gabapentin19 claims
- 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.
Bills Medicare through one group practice
- State OF Michigan Office OF Financial ManagementKalamazoo, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gretchen G. Barnas among 1,729 psychiatry physician records in Michigan
Gretchen G. Barnas, M.D. is one of 1,729 psychiatry physician records with a practice address in Michigan. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 37% of them.
- NPI issued2007 · 37% of these records are older, 49% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated2004 · median 2005 among the 828 with a school on file
- Record last updated2013 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Michigan
There are 1,729 psychiatry physician records in Michigan.
All 1,729 in Michigan → Every provider in Kalamazoo → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- David Dunstone, M.D.Kalamazoo, MI 490481164491742
- Iqbal Hussain, MDKalamazoo, MI 490481467655621
- Maritza Lagos-Saez, M.D.Kalamazoo, MI 490481124097555
- Ahsan Nazeer, M.D.Kalamazoo, MI 490481922131986
- Thomas Picard, M.D.Kalamazoo, MI 490481366401275
- Michael Redinger, MDKalamazoo, MI 490481154614014
- Suhail Sheikh, M.D.Kalamazoo, MI 490481194784660
- Robert Strung, M.D.Kalamazoo, MI 490481124087747
Common questions
What is Gretchen G. Barnas, M.D.'s NPI number?
Gretchen G. 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 G. 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 G. Barnas, M.D.'s license?
NPPES lists Michigan license number 4301084808, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gretchen G. Barnas, M.D. prescribe under Medicare Part D?
In 2024, Gretchen G. Barnas, M.D. had 320 Medicare Part D claims for 26 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.