CAROL A CALDERWOOD MD
NPI 1487607354
Family Medicine in Hamilton, MT
About Carol A Calderwood Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAROL A CALDERWOOD MD (NPI 1487607354) is an individual family medicine provider in Hamilton, Montana, licensed in Montana (MED-PHYS-LIC-7128) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Bitterroot Health - Daly Hospital, and is a graduate of Ohio State University College Of Medicine (1989).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Carol A Calderwood Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Carol Calderwood reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hamilton, MT 59840
- Reassigned Medicare billing, Montana enrollment
- 154 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bitterroot Health - Daly Hospital
Critical Access Hospitals · Hamilton, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 59840 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Carol Calderwood's NPI number?
The NPI number for Carol Calderwood is 1487607354. It was assigned to this individual provider in the NPPES registry on May 19, 2006.
Where is Carol Calderwood located?
Carol Calderwood practices at 1200 Westwood Dr Ste I, Hamilton, MT 59840. The listed phone number is (406) 363-1100.
What is Carol Calderwood's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Carol Calderwood enrolled in Medicare?
Yes. Carol Calderwood is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Carol Calderwood's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carol Calderwood reassigns Medicare benefits to Marcus Daly Memorial Hospital Corp (Hamilton, MT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Carol Calderwood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Carol Calderwood accept?
Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Carol Calderwood as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Carol Calderwood affiliated with any hospitals?
According to CMS data, Carol Calderwood is affiliated with Bitterroot Health - Daly Hospital.
When was this NPI record last updated?
The NPPES record for Carol Calderwood was last updated on November 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Carol A Calderwood, MD · NPI 1487607354
Family Medicine physician in Hamilton, Montana. Individual provider, active in the CMS NPPES registry since May 19, 2006.
## Identity
- **NPI:** 1487607354 (Entity type: Individual)
- **Enumerated:** May 19, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MED-PHYS-LIC-7128 (Montana)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1200 WESTWOOD DR STE I, Hamilton, MT 59840-2345
- **Phone:** (406) 363-1100 · **Fax:** (406) 375-4884
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Marcus Daly Memorial Hospital Corp (NPI 1457656548, Hamilton, MT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio State University College Of Medicine, class of 1989
## Record status
- **NPPES last updated:** November 12, 2024
- **Other identifiers:** Medicaid 100005410 (MT); Medicaid 1487607354 (ID)
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Source: [NPI Profile](https://npiprofile.com/npi/1487607354) · Data from the CMS NPPES public registry.