NPPES file of Aug 9, 2026

Tharani Rajeswaran, M.D.

Endocrinology, Diabetes & Metabolism Physician · Aurora, IL

Tharani Rajeswaran, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Aurora, Illinois, and NPI 1861806440, issued on Jun 11, 2014. Check the license (Illinois 036.153688, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1861806440
Name
Tharani Rajeswaran
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License numbers
036.153688 IL
MD16636 RI
Self-reported in NPPES; status is on the state search
Practice location
4100 Healthway Dr, Aurora, IL 60504
Phone
(630) 851-3105
Enumerated
Jun 11, 2014
Record last updated
Nov 18, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(630) 978-6690
Medicare enrollment
Enrolled (PECOS I20201106000271); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →

Also registered at 4100 Healthway Dr

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

  1. Huma Abbas, M.D.Psychiatry Physician1609039163
  2. Michael Agro, DPT, PTPhysical Therapist1104516343
  3. Sara Bealert, PAMedical Physician Assistant1134115330
  4. Fatimah BhuiyanBehavior Technician1083541478
  5. Elizabeth Brandon, DOFamily Medicine Physician1659302347
  6. Autumn Bryant, M.A., CCC-SLP/LSpeech-Language Pathologist1063829661

Verify Tharani Rajeswaran 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 036.153688    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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3% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024

2,710 Medicare Part D claims for 381 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.

  1. Tharani Rajeswaran2,710
  2. Specialty average2,630

Most prescribed

  1. Levothyroxine Sodium277 claims
  2. Lantus Solostar207 claims
  3. Metformin Hcl197 claims
  4. Jardiance182 claims
  5. Ozempic161 claims
  6. Glipizide101 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

  1. Advocate Health And Hospitals CorporationAurora, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Tharani Rajeswaran among 436 endocrinology, diabetes & metabolism physician records in Illinois

Tharani Rajeswaran, M.D. is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 72% of them.

  • NPI issued2014 · 72% of these records are older, 26% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2014 · median 2006 among the 295 with a school on file
  • Record last updated2021 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endocrinology, Diabetes & Metabolism Physician providers in Illinois

There are 436 endocrinology, diabetes & metabolism physician records in Illinois.

All 436 in Illinois → Every provider in Aurora → Endocrinology, Diabetes & Metabolism Physician nationwide →

The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes

  1. Padmalatha Berikai, MDAurora, IL 605041659306181
  2. Mini Sara Cherian, M.DAurora, IL 605041528205259
  3. Mehul Shah, DOAurora, IL 605041689251274
  4. Suneetha Vysetti, MDAurora, IL 605041154596567
  5. Betsy Bennet, MDAurora, IL 605061922268812
  6. Christine Cox, D.OAurora, IL 605061154620458
  7. Monica Patel, M.D.Downers Grove, IL 605151225390917
  8. Winston Thein-Wai, M.DWoodridge, IL 605171104999374

Common questions

What is Tharani Rajeswaran, M.D.'s NPI number?

Tharani Rajeswaran, M.D.'s National Provider Identifier (NPI) is 1861806440, issued on Jun 11, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Tharani Rajeswaran, M.D. located?

The NPPES record lists a practice address at 4100 Healthway Dr, Aurora, IL, 60504. Phone: (630) 851-3105. Providers update this record themselves, so call before visiting.

How can I verify Tharani Rajeswaran, M.D.'s license?

NPPES lists Illinois license number 036.153688, 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 Tharani Rajeswaran, M.D. prescribe under Medicare Part D?

In 2024, Tharani Rajeswaran, M.D. had 2,710 Medicare Part D claims for 381 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.

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.