Nathan I. Visweshwar, M.D.
Hematology & Oncology Physician · Tampa, FL
Nathan I. Visweshwar, M.D. is a hematology & oncology physician with a practice address in Tampa, Florida, and NPI 1033214325, issued on Sep 13, 2006. Check the license (Florida ME97021, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Nathan I. Visweshwar
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- ME97021 FL
Self-reported in NPPES; status is on the state search - Practice location
- 13330 Usf Laurel Dr, Tampa, FL 33612
- Phone
- (813) 974-2201
- Enumerated
- Sep 13, 2006
- Record last updated
- Mar 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 276782100 FL
- Medicare enrollment
- Enrolled (PECOS I20260320002370); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 818 in Florida → Look up another NPI →
Also registered at 13330 Usf Laurel Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nadeem Akbar, MDOtolaryngology Physician1740307644
- Lana Al-Sayed, PAPhysician Assistant1265241947
- Sharon Albers, MDDermatology Physician1386639938
- Kevin Allison, PAPhysician Assistant1477116952
Verify Nathan I. Visweshwar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME97021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
267 Medicare Part D claims for 60 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Enoxaparin Sodium42 claims
- Eliquis36 claims
- Hydroxyurea29 claims
- Xarelto23 claims
- Prednisone21 claims
- Promacta12 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: $3,892.30
4 payments; by number, the most common kind was compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Csl Behring. 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
- Baptist Health Medical Group IncPaducah, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan I. Visweshwar among 818 hematology & oncology physician records in Florida
Nathan I. Visweshwar, M.D. is one of 818 hematology & oncology physician records with a practice address in Florida. 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 2006, is newer than 21% of them.
- NPI issued2006 · 21% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1983 · median 2003 among the 581 with a school on file
- Record last updated2021 · 52% 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 Florida 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 Florida
There are 818 hematology & oncology physician records in Florida.
All 818 in Florida → Every provider in Tampa → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- John Accomando, M.D.Tampa, FL 336121649380361
- Lodovico Balducci, MDTampa, FL 336121720017494
- Maria Bazzini, DOTampa, FL 336121245259456
- Michael Jaglal, MDTampa, FL 336121417024746
- Damian Laber, MDTampa, FL 336121922089747
- Jeffrey Lancet, MDTampa, FL 336121831110337
- Merry Markham, MDTampa, FL 336121548345994
- Susan Minton, DOTampa, FL 336121225057136
Common questions
What is Nathan I. Visweshwar, M.D.'s NPI number?
Nathan I. Visweshwar, M.D.'s National Provider Identifier (NPI) is 1033214325, issued on Sep 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nathan I. Visweshwar, M.D. located?
The NPPES record lists a practice address at 13330 Usf Laurel Dr, Tampa, FL, 33612. Phone: (813) 974-2201. Providers update this record themselves, so call before visiting.
How can I verify Nathan I. Visweshwar, M.D.'s license?
NPPES lists Florida license number ME97021, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathan I. Visweshwar, M.D. prescribe under Medicare Part D?
In 2024, Nathan I. Visweshwar, M.D. had 267 Medicare Part D claims for 60 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.