Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Carol A. Calderwood, MD

Works at hospitals in Hamilton, MT · Montana

Summary

Dr. Carol A. Calderwood, MD is a family doctor at 1200 Westwood Dr, Hamilton, MT 59840. Phone: (406) 375-4758. Accepts Medicare assignment. NPI 1487607354. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 1200 Westwood Dr, Hamilton, MT 59840 · Directions (1 more location)
  • Phone: (406) 375‑4758
  • Medicare: Accepts Medicare assignment
  • Hospital: Bitterroot Health - Daly Hospital
  • Group practice: Marcus Daly Memorial Hospital Corporation
  • Medical school: Ohio State University College Of Medicine · graduated 1989 (37 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Carol A. Calderwood, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Carol A. Calderwood accept Medicare assignment?
Yes. Medicare's clinician data says Carol A. Calderwood accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Carol A. Calderwood's NPI number?
1487607354. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Carol A. Calderwood works

Medicare's Facility Affiliation Data lists Carol A. Calderwood at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Carol A. Calderwood is enrolled with Medicare (CMS data updated October 2, 2026).

  • 1200 Westwood DrHamilton, MT 59840
  • 1270 Westwood Dr, Suite 2Hamilton, MT 59840 (406) 375‑4758

Group practices

Medicare enrollment lists Carol A. Calderwood as a member of this group (CMS data updated October 2, 2026).

  • Marcus Daly Memorial Hospital Corporation97 clinicians in the group

Specialties

Find other Family Practice doctors in Montana →

Other family doctors in Hamilton

Clinicians with the same Medicare primary specialty in Hamilton, MT — not a recommendation.

All family doctors in Hamilton →

Other clinicians in Marcus Daly Memorial Hospital Corporation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolOhio State University College Of Medicine
Graduation year1989 (37 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1487607354
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians