2026 NPPES data Family Medicine Physician NPI 1275619918 MD
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JENNELL DUEY, MD

Family Medicine Physician in BILLINGS, 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
5K
Medicare Part D claims · 329 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: JENNELL DUEY, MD is a Family Medicine Physician ([object Object]) practicing in BILLINGS, Montana with a Medicare Part D prescribing footprint of 5K claims across 329 beneficiaries — 11% brand-name prescribing .

What stands out: JENNELL DUEY, MD filed 4,533 Medicare Part D claims in 2023 across BILLINGS, Montana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JENNELL DUEY, 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).

JENNELL DUEY, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 10/27/2006

NPI 1275619918

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

4,533 33% 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).

JENNELL DUEY, MD is a Family Medicine Physician provider practicing in BILLINGS, Montana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1275619918. 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.

JENNELL DUEY, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 2675 CENTRAL AVE, BILLINGS, MT, 59102, with a listed phone of (406) 238-2500. NPI 1275619918 was issued on 10/27/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUEY 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 4,533 prescription claims written by this provider, covering 329 Medicare beneficiaries and totaling roughly $430K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 3.9%. 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

2675 CENTRAL AVE
BILLINGS, MT 59102

Provider Details

NPI 1275619918
Specialty Family Medicine Physician
Credentials MD
Gender Female
NPI Issued 10/27/2006

Hospital and facility affiliations

Facilities where JENNELL DUEY, 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.

BILLINGS CLINIC
★★★★☆ 4/5
BILLINGS, MT
Acute Care Hospitals
CMS CCN: 270004

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

JENNELL DUEY, MD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 4,533 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

4,533
Total Claims
$430K
Total Drug Cost
329
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,914
Total Day Supply
286,531
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$346K
Generic Drug Cost
$80K
Opioid Claims
176 (3.9% rate)
Antibiotic Claims
54

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
0.92
Gender Split
85% female / 15% male
Age Distribution
<65: 28, 65-74: 155, 75-84: 119, 85+: 27

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Levothyroxine Sodium
280
Losartan Potassium
188
Amlodipine Besylate
172
Omeprazole
153
Atorvastatin Calcium
148
Lisinopril
144
Potassium Chloride
117
Sertraline Hcl
111
Furosemide
99
Simvastatin
99

* 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 JENNELL DUEY, 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

JENNELL DUEY, MD's 4,533 claims are above 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 DUEY.

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

Frequently Asked Questions

What is JENNELL DUEY, MD's specialty?
JENNELL DUEY, MD specializes in Family Medicine Physician and practices in BILLINGS, Montana. Credentials: MD.
How much does JENNELL DUEY, MD prescribe under Medicare Part D?
In 2023, JENNELL DUEY, MD wrote 4,533 Medicare Part D claims totaling $430K in drug costs for 329 beneficiaries.
Where is JENNELL DUEY, MD located?
JENNELL DUEY, MD is located at 2675 CENTRAL AVE, BILLINGS, MT, 59102. Phone: (406) 238-2500.
What is JENNELL DUEY, MD's NPI number?
JENNELL DUEY, MD's National Provider Identifier (NPI) is 1275619918, issued on 10/27/2006.
Does JENNELL DUEY, MD prescribe more brand-name or generic drugs?
JENNELL DUEY, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $346K in brand drug costs.
Does JENNELL DUEY, MD prescribe opioids?
Yes, JENNELL DUEY, MD had 176 opioid claims in 2023 with an opioid prescribing rate of 3.9%.
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 JENNELL DUEY, MD prescribe most often?
Based on 2023 Medicare Part D data, JENNELL DUEY, MD's most frequently prescribed drugs include Levothyroxine Sodium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNELL DUEY, MD accept Medicare?
JENNELL DUEY, MD appears in CMS Medicare data with 4,533 Part D claims and 329 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNELL DUEY, MD's credentials?
JENNELL DUEY, MD's NPI is 1275619918 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