NPPES file of Aug 9, 2026

Mathew Shaji Markos, M.D.

Psychiatry Physician · Chicago, IL

Mathew Shaji Markos, M.D. is a psychiatry physician with a practice address in Chicago, Illinois, and NPI 1245586593, issued on Jul 24, 2012. Check the license (Illinois 036.071300, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245586593
Name
Mathew Shaji Markos
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
036.071300 IL
Self-reported in NPPES; status is on the state search
Practice location
2650 S California Ave, Chicago, IL 60608
Phone
(773) 674-6123
Enumerated
Jul 24, 2012
Record last updated
Jul 24, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(773) 674-5113
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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8 nearest psychiatry physician records → All 2,147 in Illinois → Look up another NPI →

Also registered at 2650 S California Ave

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

  1. Yolanda Ortega, L.C.P.CProfessional Counselor1710317425
  2. Lori SmithClinical Social Worker1639647209

Verify Mathew Shaji Markos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036.071300    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 Illinois license search

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Mathew Shaji Markos among 2,147 psychiatry physician records in Illinois

Mathew Shaji Markos, 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 not. Its NPI, issued in 2012, is newer than 62% of them.

  • NPI issued2012 · 62% of these records are older, 36% newer
  • In a Medicare fileNo · 69% of these records are
  • In the CMS Doctors and Clinicians fileNo · 41% of these records are
  • Record last updated2012 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,147 in Illinois → Every provider in Chicago → Psychiatry Physician nationwide →

The 8 psychiatry physician records with the nearest ZIP codes

  1. Yoglackshan Ahluwalia, M.D.Chicago, IL 606081033101688
  2. Alfreda Falkowska-Grosrenaud, M.D.Chicago, IL 606081124000906
  3. Maria Fisfalen, M.D.Chicago, IL 606081558354357
  4. Medeia Gartel, M.D.Chicago, IL 606081447243241
  5. Raja Gill, MDChicago, IL 606081851540165
  6. Marilyn Griffin, MDChicago, IL 606081396904637
  7. Meghann HennellyChicago, IL 606081881869733
  8. Elizabeth Mirkin, M.D.Chicago, IL 606081407848286

Common questions

What is Mathew Shaji Markos, M.D.'s NPI number?

Mathew Shaji Markos, M.D.'s National Provider Identifier (NPI) is 1245586593, issued on Jul 24, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Mathew Shaji Markos, M.D. located?

The NPPES record lists a practice address at 2650 S California Ave, Chicago, IL, 60608. Phone: (773) 674-6123. Providers update this record themselves, so call before visiting.

How can I verify Mathew Shaji Markos, M.D.'s license?

NPPES lists Illinois license number 036.071300, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.