Kiron Viswambharan Nair, MD
Hematology & Oncology Physician · Oskaloosa, IA
Kiron Viswambharan Nair, MD is a hematology & oncology physician with a practice address in Oskaloosa, Iowa, and NPI 1790209914, issued on Jul 30, 2017. Check the license (Iowa MD-54987, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Kiron Viswambharan Nair
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- MD-54987 IA
2021040912 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1229 C Ave E, Oskaloosa, IA 52577
- Phone
- (641) 672-3236
- Enumerated
- Jul 30, 2017
- Record last updated
- Sep 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20260204000634); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 90 in Iowa → Look up another NPI →
Also registered at 1229 C Ave E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Agan, RPHPharmacotherapy Pharmacist1205049772
- Jessica Aguilera, DOFamily Medicine Physician1184316994
- Amanda Ballanger, RNRegistered Nurse1659025534
- Lisa Bard, LMHCCounselor1629176458
- Christine BeairdFamily Nurse Practitioner1063768646
- Mark Beers, DPMPodiatrist1164413209
Verify Kiron Viswambharan Nair in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license MD-54987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
644 Medicare Part D claims for 133 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 59 claims were for opioids.
Most prescribed
- Anastrozole102 claims
- Prednisone62 claims
- Abiraterone Acetate52 claims
- Hydroxyurea50 claims
- Folic Acid37 claims
- Hydrocodone-Acetaminophen18 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: $1,366.82
74 payments; by number, the most common kind was 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 3 group practices
- Golden Valley Memorial Hospital DistrictClinton, MO
- Mahaska County HospitalOskaloosa, IA
- Meritas Health CorporationNorth Kansas City, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kiron Viswambharan Nair among 90 hematology & oncology physician records in Iowa
Kiron Viswambharan Nair, MD is one of 90 hematology & oncology physician records with a practice address in Iowa. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 82% of them.
- NPI issued2017 · 82% of these records are older, 14% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2005 · median 2003 among the 55 with a school on file
- Record last updated2025 · 60% 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 Iowa 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 Iowa
There are 90 hematology & oncology physician records in Iowa.
All 90 in Iowa → Every provider in Oskaloosa → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Maroun El-Khoury, MDWest Burlington, IA 526551255357943
- Shobha Chitneni, M.D.Bettendorf, IA 527221184684987
- Mario Sy, M.D.Bettendorf, IA 527221447210638
- Anoop Aggarwal, M.D.Clinton, IA 527321902864739
- Jorge Perez-Cardona, M.D.Clinton, IA 527321801829635
- Rasa Buntinas, MDCedar Rapids, IA 524031902880966
- William Fusselman, MDCedar Rapids, IA 524031659356228
- Thomas Warren, MDCedar Rapids, IA 524031851376404
Common questions
What is Kiron Viswambharan Nair, MD's NPI number?
Kiron Viswambharan Nair, MD's National Provider Identifier (NPI) is 1790209914, issued on Jul 30, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Kiron Viswambharan Nair, MD located?
The NPPES record lists a practice address at 1229 C Ave E, Oskaloosa, IA, 52577. Phone: (641) 672-3236. Providers update this record themselves, so call before visiting.
How can I verify Kiron Viswambharan Nair, MD's license?
NPPES lists Iowa license number MD-54987, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kiron Viswambharan Nair, MD prescribe under Medicare Part D?
In 2024, Kiron Viswambharan Nair, MD had 644 Medicare Part D claims for 133 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.