2026 NPPES data Family Medicine Physician NPI 1265449482 MD
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MARC ADAMS, MD

Family Medicine Physician in SHELBY, Montana. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
226
Medicare Part D claims · 45 beneficiaries · Family Medicine Physician avg: 3K
What the federal data reveals: MARC ADAMS, MD is a Family Medicine Physician ([object Object]) practicing in SHELBY, Montana with a Medicare Part D prescribing footprint of 226 claims across 45 beneficiaries .

What stands out: MARC ADAMS, MD filed 226 Medicare Part D claims in 2023 across SHELBY, Montana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

MARC ADAMS, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

MARC ADAMS, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/01/2006

NPI 1265449482

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

226 93% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Montana

How Family Medicine Physician compares to other specialties among Montana providers

Montana providers

Family Medicine Physician share within Montana

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within Montana

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

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).

MARC ADAMS, MD is a Family Medicine Physician provider practicing in SHELBY, Montana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1265449482. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MARC ADAMS, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 670 PARK AVE, SHELBY, MT, 59474, with a listed phone of (406) 434-3110. NPI 1265449482 was issued on 08/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ADAMS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 226 prescription claims written by this provider, covering 45 Medicare beneficiaries and totaling roughly $33K in drug spend, with an opioid prescribing rate of 9.7%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

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

670 PARK AVE
SHELBY, MT 59474

Provider Details

NPI 1265449482
Specialty Family Medicine Physician
Credentials MD
Gender Male
NPI Issued 08/01/2006

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

226
Total Claims
$33K
Total Drug Cost
45
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
320
Total Day Supply
8,007
Generic Drug Cost
$3K
Opioid Claims
22 (9.7% rate)
Antibiotic Claims
28

Patient Demographics

Average Patient Age
70.3 years
Avg HCC Risk Score
1.33
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.

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
14
Gabapentin
11

* 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 MARC ADAMS, 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

MARC ADAMS, MD's 226 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 ADAMS.

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARC ADAMS, MD's specialty?
MARC ADAMS, MD specializes in Family Medicine Physician and practices in SHELBY, Montana. Credentials: MD.
How much does MARC ADAMS, MD prescribe under Medicare Part D?
In 2023, MARC ADAMS, MD wrote 226 Medicare Part D claims totaling $33K in drug costs for 45 beneficiaries.
Where is MARC ADAMS, MD located?
MARC ADAMS, MD is located at 670 PARK AVE, SHELBY, MT, 59474. Phone: (406) 434-3110.
What is MARC ADAMS, MD's NPI number?
MARC ADAMS, MD's National Provider Identifier (NPI) is 1265449482, issued on 08/01/2006.
Does MARC ADAMS, MD prescribe opioids?
Yes, MARC ADAMS, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 9.7%.
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 MARC ADAMS, MD prescribe most often?
Based on 2023 Medicare Part D data, MARC ADAMS, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARC ADAMS, MD accept Medicare?
MARC ADAMS, MD appears in CMS Medicare data with 226 Part D claims and 45 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARC ADAMS, MD's credentials?
MARC ADAMS, MD's NPI is 1265449482 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

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