Udhayvir Singh Grewal, MD
Hematology & Oncology Physician · Iowa City, IA
Udhayvir Singh Grewal, MD is a hematology & oncology physician with a practice address in Iowa City, Iowa, and NPI 1669036794, issued on Apr 24, 2019. Check the license on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Udhayvir Singh Grewal
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 102098 GA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Hawkins Dr, Iowa City, IA 52242
- Phone
- (319) 356-2075
- Enumerated
- Apr 24, 2019
- Record last updated
- May 26, 2025
- Medicare enrollment
- Enrolled (PECOS I20250930000572); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 90 in Iowa → Look up another NPI →
Also registered at 200 Hawkins Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Abdalla Abdalla, MBBCHAnatomic Pathology & Clinical Pathology Physician1518859826
- Sameh AbdallaAnatomic Pathology & Clinical Pathology Physician1437902160
Verify Udhayvir Singh Grewal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
49 Medicare Part D claims for 25 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
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: $97.74
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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
- The Emory Clinic IncAtlanta, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Udhayvir Singh Grewal among 90 hematology & oncology physician records in Iowa
Udhayvir Singh Grewal, 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 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 10% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2018 · 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 Iowa City → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Daniel Berg, MDIowa City, IA 522421841289790
- Thomas Carlisle, MD PHDIowa City, IA 522421134116288
- Thomas Carter, MD PHDIowa City, IA 522421093703951
- Yuya Hagiwara, MDIowa City, IA 522421083811087
- Katarzyna Jamieson, MDIowa City, IA 522421376582205
- Mark Karwal, MDIowa City, IA 522421891770616
- Douglas Laux, MDIowa City, IA 522421295946218
- Brian Link, MDIowa City, IA 522421487635793
Common questions
What is Udhayvir Singh Grewal, MD's NPI number?
Udhayvir Singh Grewal, MD's National Provider Identifier (NPI) is 1669036794, issued on Apr 24, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Udhayvir Singh Grewal, MD located?
The NPPES record lists a practice address at 200 Hawkins Dr, Iowa City, IA, 52242. Phone: (319) 356-2075. Providers update this record themselves, so call before visiting.
How can I verify Udhayvir Singh Grewal, MD's license?
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 Udhayvir Singh Grewal, MD prescribe under Medicare Part D?
In 2024, Udhayvir Singh Grewal, MD had 49 Medicare Part D claims for 25 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.