Thandavababu Chelliah, MD
Hematology & Oncology Physician · Brooklyn, NY
Thandavababu Chelliah, MD is a hematology & oncology physician with a practice address in Brooklyn, New York, and NPI 1730100744, issued on Jul 22, 2006. Check the license (New York 238914, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Thandavababu Chelliah
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 238914 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2601 Ocean Pkwy, Brooklyn, NY 11235
- Phone
- (718) 616-4408
- Enumerated
- Jul 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (718) 616-4105
- Medicaid ID
- 02744329 NY
- Medicare enrollment
- Enrolled (PECOS I20060927000283); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 2601 Ocean Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thandavababu Chelliah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 238914Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
399 Medicare Part D claims for 52 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Anastrozole25 claims
- Lupron Depot21 claims
- Prednisone20 claims
- Abiraterone Acetate18 claims
- Imatinib Mesylate16 claims
- Ninlaro13 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.
Industry payments in 2024: $28.12
1 payment: food and beverage; the largest payer was Pfizer Inc. 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.
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
- Physician Affiliate Group OF New York PCBrooklyn, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thandavababu Chelliah among 1,163 hematology & oncology physician records in New York
Thandavababu Chelliah, MD is one of 1,163 hematology & oncology physician records with a practice address in New York. 83% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1993 · median 2002 among the 833 with a school on file
- Record last updated2007 · 61% 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 New York 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 New York
There are 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in Brooklyn → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ruvim Krupkin, M.D.Brooklyn, NY 112351942205042
- Alexander Losev, M.D.Brooklyn, NY 112351992732234
- Yan Pronin, P.A.Brooklyn, NY 112351427160399
- Charles Ruvolo, MDBrooklyn, NY 112351669669123
- Jason Steinberg, M.D.Brooklyn, NY 112351215222005
- Miss Tanni, DOBrooklyn, NY 112351396241329
- Ilya Blokh, M.D.Brooklyn, NY 112341942253414
- Gardith Joseph, M.D.Brooklyn, NY 112341811928773
Common questions
What is Thandavababu Chelliah, MD's NPI number?
Thandavababu Chelliah, MD's National Provider Identifier (NPI) is 1730100744, issued on Jul 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thandavababu Chelliah, MD located?
The NPPES record lists a practice address at 2601 Ocean Pkwy, Brooklyn, NY, 11235. Phone: (718) 616-4408. Providers update this record themselves, so call before visiting.
How can I verify Thandavababu Chelliah, MD's license?
NPPES lists New York license number 238914, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thandavababu Chelliah, MD prescribe under Medicare Part D?
In 2024, Thandavababu Chelliah, MD had 399 Medicare Part D claims for 52 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.
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.