Mark W. Westberg, MD
Medical Oncology Physician · Ankeny, IA
Mark W. Westberg, MD is a medical oncology physician with a practice address in Ankeny, Iowa, and NPI 1952362394, issued on Mar 28, 2006. Check the license (Iowa MD-20734, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark W. Westberg
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- MD-20734 IA
20734 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1950 SW Magazine RD, Ankeny, IA 50023
- Phone
- (515) 282-2921
- Enumerated
- Mar 28, 2006
- Record last updated
- Nov 18, 2025
- Fax
- (515) 283-1035
- Medicare enrollment
- Enrolled (PECOS I20100824000641); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1976
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 61 in Iowa → Look up another NPI →
Also registered at 1950 SW Magazine RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aaron Anderson, PA-CPhysician Assistant1780769323
- Rachel Blagg, PA-CPhysician Assistant1407441223
- Daniel Buroker, M.D.Medical Oncology Physician1184737504
- Thomas Buroker, DOMedical Oncology Physician1982665337
- Abigail CaracciPhysician Assistant1932793957
- Isabelle Chaney, ARNPFamily Nurse Practitioner1083424576
Verify Mark W. Westberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license MD-20734Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% more Medicare Part D claims than the average medical oncology physician in 2024
1,105 Medicare Part D claims for 142 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 159 claims were for opioids.
Most prescribed
- Anastrozole264 claims
- Letrozole74 claims
- Gabapentin64 claims
- Prednisone44 claims
- Fentanyl42 claims
- Ondansetron Hcl36 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.
Bills Medicare through one group practice
- St Anthony Regional Hospital And Nursing HomeCarroll, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark W. Westberg among 61 medical oncology physician records in Iowa
Mark W. Westberg, MD is one of 61 medical oncology physician records with a practice address in Iowa. 75% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 52% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1976 · median 2002 among the 45 with a school on file
- Record last updated2025 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Iowa
There are 61 medical oncology physician records in Iowa.
All 61 in Iowa → Every provider in Ankeny → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Thomas Buroker, DOAnkeny, IA 500231982665337
- Daniel Buroker, M.D.Ankeny, IA 500231184737504
- Zeeshan Jawa, MDAnkeny, IA 500231891055612
- Joshua Lukenbill, D.O.Ankeny, IA 500231003089814
- Robert Shreck, MDAnkeny, IA 500231588628101
- Millicent Amankwah, M.DDes Moines, IA 503091881071223
- Robert Behrens, MDDes Moines, IA 503091215999800
- Matthew Hill, DODes Moines, IA 503091053361972
Common questions
What is Mark W. Westberg, MD's NPI number?
Mark W. Westberg, MD's National Provider Identifier (NPI) is 1952362394, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark W. Westberg, MD located?
The NPPES record lists a practice address at 1950 SW Magazine RD, Ankeny, IA, 50023. Phone: (515) 282-2921. Providers update this record themselves, so call before visiting.
How can I verify Mark W. Westberg, MD's license?
NPPES lists Iowa license number MD-20734, 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. Westberg, MD prescribe under Medicare Part D?
In 2024, Mark W. Westberg, MD had 1,105 Medicare Part D claims for 142 beneficiaries; the average among medical oncology physician prescribers was 703. 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.