NPPES file of Aug 9, 2026

Seshan Subramanian, MD

Hematology & Oncology Physician · Chicago, IL

Seshan Subramanian, MD is a hematology & oncology physician with a practice address in Chicago, Illinois, and NPI 1083691950, issued on Dec 30, 2005. Check the license (Illinois 036041610, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083691950
Name
Seshan Subramanian
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
036041610 IL
Self-reported in NPPES; status is on the state search
Practice location
2525 S Michigan Ave, Chicago, IL 60616
Phone
(312) 567-6691
Enumerated
Dec 30, 2005
Record last updated
Aug 19, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(312) 328-7895
Medicaid ID
036041610 IL
Medicare enrollment
Enrolled (PECOS I20080114000021); 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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Also registered at 2525 S Michigan Ave

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

  1. Abu Abbasi, MDInternal Medicine Physician1083243877
  2. Lamies Abuakar, PHARMD.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1659655181
  3. Muna Abdu Adem, MDInternal Medicine Physician1457238107
  4. Masooma AfridiStudent in an Organized Health Care Education/Training Program1346035581
  5. Suneil Agrawal, MDEmergency Medicine Physician1891948568
  6. Ismeal AhmedStudent in an Organized Health Care Education/Training Program1265373765

Verify Seshan Subramanian 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 036041610
    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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81% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

167 Medicare Part D claims for 54 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Seshan Subramanian167
  2. Specialty average877

Most prescribed

  1. Anastrozole20 claims
  2. Eliquis13 claims
  3. Gabapentin12 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 80.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score65.0
  2. Costout of 100 · 30%63.2
  3. Promoting interoperabilityout of 100 · 25%72.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,575.34

73 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Seshan Subramanian$1,575.34
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Mount Sinai Community FoundationChicago, IL

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

Seshan Subramanian among 666 hematology & oncology physician records in Illinois

Seshan Subramanian, MD is one of 666 hematology & oncology physician records with a practice address in Illinois. 84% 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, 85% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1961 · median 2003 among the 461 with a school on file
  • Record last updated2010 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Illinois

There are 666 hematology & oncology physician records in Illinois.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Peter Friedell, M. D.Chicago, IL 606161356360531
  2. Juan Restrepo, MDChicago, IL 606161356546923
  3. Jonas De Souza, M.D.Chicago, IL 606151801034830
  4. Aimee Schad, MDChicago, IL 606171053802975
  5. Thiti Jaojaroenkul, MDChicago, IL 606141679657324
  6. Kochurani Maliekel, MDChicago, IL 606181699777813
  7. Manjeet Chawla, MDChicago, IL 606131902910425
  8. Evelyn Currie, MDChicago, IL 606191457484586

Common questions

What is Seshan Subramanian, MD's NPI number?

Seshan Subramanian, MD's National Provider Identifier (NPI) is 1083691950, issued on Dec 30, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Seshan Subramanian, MD located?

The NPPES record lists a practice address at 2525 S Michigan Ave, Chicago, IL, 60616. Phone: (312) 567-6691. Providers update this record themselves, so call before visiting.

How can I verify Seshan Subramanian, MD's license?

NPPES lists Illinois license number 036041610, 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 Seshan Subramanian, MD prescribe under Medicare Part D?

In 2024, Seshan Subramanian, MD had 167 Medicare Part D claims for 54 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

What is Seshan Subramanian, MD's MIPS final score?

The 2023 MIPS final score is 80.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.