NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1487607354 MD
Verify on CMS → Carol Calderwood, MD
Family Medicine Physician in Hamilton, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,640 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
255
Medicare Part D claims · 174 beneficiaries · Family Medicine Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Carol Calderwood, MD filed 255 Medicare Part D claims in 2023 as a Family Medicine Physician in Hamilton, Montana.
- 255
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Carol Calderwood, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
255 49th percentile higher than 49% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Carol Calderwood, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Carol Calderwood, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
255 93% vs specialty avg
Specialty distribution in Montana
How Family Medicine Physician compares to other specialties among Montana providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Carol Calderwood, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 1200 WESTWOOD DR STE I, Hamilton, MT, 59840, with a listed phone of (406) 363-1100. NPI 1487607354 was issued on 05/19/2006.
Medicare Part D records for calendar year 2023 show 255 prescription claims written by this provider, covering 174 Medicare beneficiaries and totaling roughly $5K in drug spend.
Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1487607354 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/19/2006 |
Hospital and facility affiliations
Facilities where Carol Calderwood, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Marcus Daly Memorial Hospital Corporation
Hamilton, MT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
255
Total Claims
$5K
Total Drug Cost
174
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 255
- Total Day Supply
- 2,194
- Generic Drug Cost
- $3K
- Antibiotic Claims
- 127
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 0.96
- Gender Split
- 71% female / 29% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Carol Calderwood, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
27 claims
- Mupirocin
Mupirocin
22 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
22 claims
- Azithromycin
Azithromycin
15 claims
- Cefuroxime
Cefuroxime
15 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
14 claims
- Methylprednisolone
Methylprednisolone
14 claims
- Nitrofurantoin Mon…
Nitrofurantoin Mono-Macro
14 claims
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 27 |
| Mupirocin | 22 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 22 |
| Azithromycin | 15 |
| Cefuroxime Cefuroxime Axetil | 15 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 14 |
| Methylprednisolone | 14 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 14 |
| Cephalexin | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Carol Calderwood, MD fits within the Family Medicine Physician landscape nationally.
147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Carol Calderwood, MD's 255 claims are below the specialty average of 3,418.
Nearby Family Medicine Physician Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Calderwood.
Dr. Marc Adams
MD
Shelby, MT
Dr. Dale Agner
M.D.
Billings, MT
Dr. Cynthia Alarcon
PA-C
Helena, MT
Dr. Brandon Allen
MD
Ennis, MT
Dr. Hans Amen
D.O.
Malmstrom Afb, MT
Compare Family Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Montana
Frequently Asked Questions
What is Carol Calderwood, MD's specialty? ▼
Carol Calderwood, MD specializes in Family Medicine Physician and practices in Hamilton, Montana. Credentials: MD.
How much does Carol Calderwood, MD prescribe under Medicare Part D? ▼
In 2023, Carol Calderwood, MD wrote 255 Medicare Part D claims totaling $5K in drug costs for 174 beneficiaries.
Where is Carol Calderwood, MD located? ▼
Carol Calderwood, MD is located at 1200 WESTWOOD DR STE I, Hamilton, MT, 59840. Phone: (406) 363-1100.
What is Carol Calderwood, MD's NPI number? ▼
Carol Calderwood, MD's National Provider Identifier (NPI) is 1487607354, issued on 05/19/2006.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Carol Calderwood, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Carol Calderwood, MD's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Mupirocin, Sulfamethoxazole-Trimethoprim. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carol Calderwood, MD accept Medicare? ▼
Carol Calderwood, MD appears in CMS Medicare data with 255 Part D claims and 174 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carol Calderwood, MD's credentials? ▼
Carol Calderwood, MD's NPI is 1487607354 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.