Margaret L. J. Hayes, M.D.
Psychiatry Physician · Marion, IL
Margaret L. J. Hayes, M.D. is a psychiatry physician with a practice address in Marion, Illinois, and NPI 1578619003, issued on Jan 26, 2007. Check the license (Illinois 036-090222, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Margaret L. J. Hayes
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 036-090222 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3111 Williamson County Parkway, Marion, IL 62959
- Phone
- (618) 997-3647
- Enumerated
- Jan 26, 2007
- Record last updated
- Jan 11, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (618) 998-1328
- Medicaid IDs
- 036090222 IL
370966854011 IL - Entity
- Type 1 · individual
Also registered at 3111 Williamson County Parkway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amanda Martin, COTALOccupational Therapy Assistant1518055763
Verify Margaret L. J. Hayes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-090222Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Psychiatry Physician providers in Illinois
There are 2,147 psychiatry physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other psychiatry physician records in Illinois
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- Anthony Abadir, MDOak Park, IL1295312551
- Huma Abbas, M.D.Aurora, IL1609039163
- Jeff Abbott, M.D.Chicago, IL1265887509
- Kathryn AbbottChicago, IL1295537561
- Gil Abelita, MDBloomington, IL1619986551
- Dinuk Abeysekera, M.D.North Chicago, IL1366616534
- Patrick Abler, DOSpringfield, IL1770158537
- Rohit Abraham, MD, MPH, MATChicago, IL1013478932
- Richard AbramsChicago, IL1003992413
Common questions
What is Margaret L. J. Hayes, M.D.'s NPI number?
Margaret L. J. Hayes, M.D.'s National Provider Identifier (NPI) is 1578619003, issued on Jan 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Margaret L. J. Hayes, M.D. located?
The NPPES record lists a practice address at 3111 Williamson County Parkway, Marion, IL, 62959. Phone: (618) 997-3647. Providers update this record themselves, so call before visiting.
How can I verify Margaret L. J. Hayes, M.D.'s license?
NPPES lists Illinois license number 036-090222, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.