Mercedes Martinez, M.D.
Psychiatry Physician · Chicago, IL
Mercedes Martinez, M.D. is a psychiatry physician with a practice address in Chicago, Illinois, and NPI 1184607608, issued on Nov 29, 2005. Check the license (Illinois 036092099, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mercedes Martinez
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 036092099 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4200 N Oak Park Ave, Chicago, IL 60634
- Phone
- (773) 551-2724
- Enumerated
- Nov 29, 2005
- Record last updated
- Feb 8, 2022
- Medicaid ID
- 036092099 IL
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,147 in Illinois → Look up another NPI →
Also registered at 4200 N Oak Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Flora Baetiong, M.D.Psychiatry Physician1104971787
- Grace Carag, M.D.Family Medicine Physician1750436242
- Lolita Crisostomo, M.D.Psychiatry Physician1871648360
- Micheal Cwynar, M.D.Psychiatry Physician1801941307
- Ma-Corazon Diaz, M.D.Family Medicine Physician1114072626
- Douglas Hafner, DDSDentist1912053182
Verify Mercedes Martinez 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 036092099Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average psychiatry physician in 2024
14 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Mercedes Martinez among 2,147 psychiatry physician records in Illinois
Mercedes Martinez, M.D. is one of 2,147 psychiatry physician records with a practice address in Illinois. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 41% of these records are
- Record last updated2022 · 53% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
841 psychiatry physician records list a practice address in Chicago
They are 841 of the 63,379 NPPES records with a practice address in Chicago, and 2,147 psychiatry physician records in Illinois.
All 2,147 in Illinois → Every provider in Chicago → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Flora Baetiong, M.D.Chicago, IL 606341104971787
- Lolita Crisostomo, M.D.Chicago, IL 606341871648360
- Micheal Cwynar, M.D.Chicago, IL 606341801941307
- Yetunde Johnson, MD., MPHChicago, IL 606341164622361
- Usha Kartan, M.D.Chicago, IL 606341689720310
- Cristito Leyba, M.D.Chicago, IL 606341366598096
- Evelyn Morales, M.D.Chicago, IL 606341811043557
- Mir Obaid, M.D.Chicago, IL 606341336295088
Common questions
What is Mercedes Martinez, M.D.'s NPI number?
Mercedes Martinez, M.D.'s National Provider Identifier (NPI) is 1184607608, issued on Nov 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mercedes Martinez, M.D. located?
The NPPES record lists a practice address at 4200 N Oak Park Ave, Chicago, IL, 60634. Phone: (773) 551-2724. Providers update this record themselves, so call before visiting.
How can I verify Mercedes Martinez, M.D.'s license?
NPPES lists Illinois license number 036092099, 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.
How much does Mercedes Martinez, M.D. prescribe under Medicare Part D?
In 2024, Mercedes Martinez, M.D. had 14 Medicare Part D claims; 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.