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Medical Oncology

Mark W. Westberg, MD

Works at hospitals in Denison, IA · Sac City, IA · Carroll, IA … · Iowa

Summary

Mark W. Westberg, MD (Medical Oncology) is listed by Medicare at 5 hospitals in Denison, IA, Sac City, IA and Carroll, IA and other places. NPI 1952362394. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Mark W. Westberg, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Medical OncologyPrimary specialty
YesAccepts Medicare assignment
50Years since medical school (graduated 1976)
University Of Iowa, Rj & L Carver College Of MedicineMedical school
MaleGender (as listed)
St Anthony Regional Hospital and Nursing HomeGroup practice

Quick answers

Which hospitals does Mark W. Westberg work at?
Medicare's official clinician data lists Mark W. Westberg at 5 hospitals: Crawford County Memorial Hospital, Loring Hospital, St Anthony Regional Hospital & Nursing Home, Stewart Memorial Community Hospital and UnityPoint Health - Des Moines Iowa Methodist Medi…. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Mark W. Westberg see patients?
Medicare's clinician data lists 1 practice location in Carroll, IA. Call before your visit to confirm the address.
What is Mark W. Westberg's specialty?
Medicare lists Medical Oncology as the primary specialty, and also Hematology.
Does Mark W. Westberg accept Medicare assignment?
Yes. Medicare's clinician data says Mark W. Westberg accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Mark W. Westberg?
(712) 794-5402, as listed in official Medicare / NPI Registry data.
What is Mark W. Westberg's NPI number?
1952362394. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Mark W. Westberg works

Medicare's Facility Affiliation Data lists Mark W. Westberg at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Mark W. Westberg is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Mark W. Westberg as a member of this group (CMS data updated 2026-10-02).

  • St Anthony Regional Hospital and Nursing Home50 clinicians in the group

Specialties

Find other Medical Oncology doctors in Iowa →

Other oncologists in Iowa

Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.

All oncologists in Iowa →

Clinician information

CredentialMD
Medical schoolUniversity Of Iowa, Rj & L Carver College Of Medicine
Graduation year1976
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1952362394
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians