Thodur M. Ranganathan, M.D.
Psychiatry Physician · Chicago, IL
Thodur M. Ranganathan, M.D. is a psychiatry physician with a practice address in Chicago, Illinois, and NPI 1841269727, issued on Mar 14, 2006. Check the license (Illinois 036-081441, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Thodur M. Ranganathan
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 036-081441 IL
Self-reported in NPPES; status is on the state search - Practice location
- 7531 S Stony Island Ave, Chicago, IL 60649
- Phone
- (773) 947-7900
- Enumerated
- Mar 14, 2006
- Record last updated
- Jul 27, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (773) 947-7901
- Medicaid ID
- 036-081441 IL
- Medicare enrollment
- Enrolled (PECOS I20040719001341); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,147 in Illinois → Look up another NPI →
Also registered at 7531 S Stony Island Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thodur M. Ranganathan 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 036-081441Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average psychiatry physician in 2024
382 Medicare Part D claims for 148 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Mirtazapine48 claims
- Risperidone32 claims
- Quetiapine Fumarate31 claims
- Aripiprazole25 claims
- Divalproex Sodium25 claims
- Olanzapine16 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
- Ranganathan T LtdDes Plaines, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thodur M. Ranganathan among 2,147 psychiatry physician records in Illinois
Thodur M. Ranganathan, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 65% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Graduated1980 · median 2004 among the 877 with a school on file
- Record last updated2016 · 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
- Peggy Chou, M. D.Chicago, IL 606491124144886
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- Tinoka McPherson, MD, DMD-MPH, PHDChicago, IL 606491306671300
- Portia Bonebrake, M.D.Chicago, IL 606471073673760
- Chung Chen, M.D.Chicago, IL 606511316958002
- Jack Chovanec, MDChicago, IL 606471255081170
- Kristina Gawor, M.D.Chicago, IL 606511114145950
- Phyllis Amabile, M.D.Chicago, IL 606461346253606
Common questions
What is Thodur M. Ranganathan, M.D.'s NPI number?
Thodur M. Ranganathan, M.D.'s National Provider Identifier (NPI) is 1841269727, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thodur M. Ranganathan, M.D. located?
The NPPES record lists a practice address at 7531 S Stony Island Ave, Chicago, IL, 60649. Phone: (773) 947-7900. Providers update this record themselves, so call before visiting.
How can I verify Thodur M. Ranganathan, M.D.'s license?
NPPES lists Illinois license number 036-081441, 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 Thodur M. Ranganathan, M.D. prescribe under Medicare Part D?
In 2024, Thodur M. Ranganathan, M.D. had 382 Medicare Part D claims for 148 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.