NPPES file of Aug 9, 2026

Nivan Chowattukunnel

Hematology & Oncology Physician · Chicago, IL

Nivan Chowattukunnel is a hematology & oncology physician with a practice address in Chicago, Illinois, and NPI 1629537816, issued on Mar 18, 2019. Check the license (Illinois 036.175156, 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
1629537816
Name
Nivan Chowattukunnel
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
036.175156 IL
Self-reported in NPPES; status is on the state search
Practice location
900 W Nelson St, Chicago, IL 60657
Phone
(773) 296-7089
Enumerated
Mar 18, 2019
Record last updated
Sep 29, 2025
Medicare enrollment
Enrolled (PECOS I20250725000204); accepts Medicare assignment
Medical or professional school
Indiana University School Of Medicine, 2019
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 900 W Nelson St

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

  1. Nora Al-Sibaie, PHARMDPharmacist1134694326
  2. Jennifer Babiarz, PAMedical Physician Assistant1457456105
  3. Ana BedonClinical Nurse Specialist1952778318
  4. Ifunanya Chris-UkahPhysician Assistant1669105250
  5. Sonia ChristianHematology & Oncology Physician1891038204
  6. Juli Dziuban, PA-CPhysician Assistant1972002491

Verify Nivan Chowattukunnel 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 036.175156    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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98% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

19 Medicare Part D claims for 11 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.

  1. Nivan Chowattukunnel19
  2. Specialty average877

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 CorporationChicago, IL

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

Hematology & Oncology Physician providers in Illinois

There are 666 hematology & oncology physician records in Illinois.

All 666 in Illinois → Every provider in Chicago →

Other hematology & oncology physician records in Illinois

  1. Yasmin Abaza, M.D.Chicago, IL1033548383
  2. Worood Abboud, M.D.Joliet, IL1245325018
  3. Sabree Abedrabo, MDPark Ridge, IL1790344471
  4. Ivy AbrahamChicago, IL1497172845
  5. Majed Abuhajir, MDRockford, IL1700837218
  6. Kehinde Adekola, MDChicago, IL1306026117
  7. Solomon Adler, M.D.Chicago, IL1043499866
  8. Edem Agamah, MDSpringfield, IL1932147279
  9. Vasia Ahmed, M.D.Tinley Park, IL1992797047
  10. Amer Al Homssi, M.D.Chicago Ridge, IL1215483391

Common questions

What is Nivan Chowattukunnel's NPI number?

Nivan Chowattukunnel's National Provider Identifier (NPI) is 1629537816, issued on Mar 18, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Nivan Chowattukunnel located?

The NPPES record lists a practice address at 900 W Nelson St, Chicago, IL, 60657. Phone: (773) 296-7089. Providers update this record themselves, so call before visiting.

How can I verify Nivan Chowattukunnel's license?

NPPES lists Illinois license number 036.175156, 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 Nivan Chowattukunnel prescribe under Medicare Part D?

In 2024, Nivan Chowattukunnel had 19 Medicare Part D claims for 11 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.