Mark W. Karwal, MD
Hematology & Oncology Physician · Iowa City, IA
Mark W. Karwal, MD is a hematology & oncology physician with a practice address in Iowa City, Iowa, and NPI 1891770616, issued on Dec 14, 2005. Check the license (Iowa 24911, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark W. Karwal
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 24911 IA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Hawkins Dr, Iowa City, IA 52242
- Phone
- (319) 353-7900
- Enumerated
- Dec 14, 2005
- Record last updated
- May 4, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (319) 353-8377
- Medicaid ID
- 0087403 IA
- Medicare enrollment
- Enrolled (PECOS I20090608000307); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1984
- 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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Verify Mark W. Karwal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 24911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average hematology & oncology physician in 2024
925 Medicare Part D claims for 220 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 21 claims were for opioids.
Most prescribed
- Letrozole316 claims
- Tamoxifen Citrate63 claims
- Exemestane56 claims
- Hydroxyurea54 claims
- Ondansetron Hcl28 claims
- Ibrance25 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: $525.00
1 payment: consulting fee; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- State University OF IowaIowa City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark W. Karwal among 90 hematology & oncology physician records in Iowa
Mark W. Karwal, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1984 · median 2003 among the 55 with a school on file
- Record last updated2009 · 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
- Douglas Laux, MDIowa City, IA 522421295946218
- Brian Link, MDIowa City, IA 522421487635793
- Laurel Lyckholm, M.D.Iowa City, IA 522421164512711
Common questions
What is Mark W. Karwal, MD's NPI number?
Mark W. Karwal, MD's National Provider Identifier (NPI) is 1891770616, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark W. Karwal, MD located?
The NPPES record lists a practice address at 200 Hawkins Dr, Iowa City, IA, 52242. Phone: (319) 353-7900. Providers update this record themselves, so call before visiting.
How can I verify Mark W. Karwal, MD's license?
NPPES lists Iowa license number 24911, 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 Mark W. Karwal, MD prescribe under Medicare Part D?
In 2024, Mark W. Karwal, MD had 925 Medicare Part D claims for 220 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.