2026 NPPES data Addiction Medicine (Psychiatry & Neurology) Physician NPI 1851779243 M.D.
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SARAH MULLOWNEY, M.D.

Addiction Medicine (Psychiatry & Neurology) Physician in ANACONDA, 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
870
Medicare Part D claims · 42 beneficiaries · Addiction Medicine (Psychiatry & Neurology) Physician avg: 1K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$52.2
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

SARAH MULLOWNEY, M.D. filed 870 Medicare Part D claims in 2023 as a Addiction Medicine (Psychiatry & Neurology) Physician in ANACONDA, Montana, prescribing 98% generic.

870
Part D claims, 2023
98%
generic prescribing
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.

SARAH MULLOWNEY, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

870 Top 27% higher than 73% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

SARAH MULLOWNEY, M.D. 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 SARAH MULLOWNEY, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/18/2015

NPI 1851779243

Primary specialty

Addiction Medicine (Psychiatry & Neurology) Physician

Niche

658 US NPIs in this specialty

Medicare Part D claims

870 15% vs specialty avg

2023 prescription claims

Specialty avg: 1,019

Specialty distribution in Montana

How Addiction Medicine (Psychiatry & Neurology) Physician compares to other specialties among Montana providers

Montana providers

Addiction Medicine (Psychiatry & Neurology) Physician share within Montana

1. Addiction Medicine (Psychiatry & Neurology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Psychiatry & Neurology) Physician share within Montana

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Medicine (Psychiatry & Neurology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Addiction Medicine (Psychiatry & Neurology) Physician ABMS/AOA estimate

Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) 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).

SARAH MULLOWNEY, M.D. appears in the CMS NPPES registry as a Addiction Medicine (Psychiatry & Neurology) Physician provider holding M.D. credentials at 401 W PENNSYLVANIA AVE, ANACONDA, MT, 59711, with a listed phone of (406) 563-8500. NPI 1851779243 was issued on 05/18/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MULLOWNEY 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 870 prescription claims written by this provider, covering 42 Medicare beneficiaries and totaling roughly $42K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 3.2%. 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.

Addiction Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 658 enrolled providers across 49 states and an average of 1,019 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

401 W PENNSYLVANIA AVE
ANACONDA, MT 59711

Provider Details

NPI 1851779243
Specialty Addiction Medicine (Psychiatry & Neurology) Physician
Credentials M.D.
Gender Female
NPI Issued 05/18/2015

Hospital and facility affiliations

Facilities where SARAH MULLOWNEY, M.D. 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.

COMMUNITY HOSPITAL OF ANACONDA
★★★★★ 5/5
ANACONDA, MT
Critical Access Hospitals
CMS CCN: 271335

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for SARAH MULLOWNEY, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$52

Largest payer

Lundbeck LLC

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

SARAH MULLOWNEY, M.D. — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 870 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.

870
Total Claims
$42K
Total Drug Cost
42
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,252
Total Day Supply
36,179
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$19K
Generic Drug Cost
$23K
Opioid Claims
28 (3.2% rate)

Patient Demographics

Average Patient Age
67.6 years
Avg HCC Risk Score
1.57
Gender Split
45% female / 55% male
Age Distribution
<65: 11, 65-74: 21, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What SARAH MULLOWNEY, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Trazodone Hcl
125
Duloxetine Hcl
86
Aripiprazole
72
Bupropion Xl
Bupropion Hcl
56
Quetiapine Fumarate
54
Escitalopram Oxalate
51
Mirtazapine
49
Lamotrigine
47
Buprenorphine
28
Donepezil Hcl
26

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Addiction Medicine (Psychiatry & Neurology) Physician Overview

How SARAH MULLOWNEY, M.D. fits within the Addiction Medicine (Psychiatry & Neurology) Physician landscape nationally.

658
Addiction Medicine (Psychiatry & Neurology) Physician Providers in US
49
States with Addiction Medicine (Psychiatry & Neurology) Physician
1,019
Avg Claims per Provider

SARAH MULLOWNEY, M.D.'s 870 claims are below the specialty average of 1,019.

Nearby Addiction Medicine (Psychiatry & Neurology) Physician Providers in Montana

Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as MULLOWNEY.

Compare Addiction Medicine (Psychiatry & Neurology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SARAH MULLOWNEY, M.D.'s specialty?
SARAH MULLOWNEY, M.D. specializes in Addiction Medicine (Psychiatry & Neurology) Physician and practices in ANACONDA, Montana. Credentials: M.D..
How much does SARAH MULLOWNEY, M.D. prescribe under Medicare Part D?
In 2023, SARAH MULLOWNEY, M.D. wrote 870 Medicare Part D claims totaling $42K in drug costs for 42 beneficiaries.
Where is SARAH MULLOWNEY, M.D. located?
SARAH MULLOWNEY, M.D. is located at 401 W PENNSYLVANIA AVE, ANACONDA, MT, 59711. Phone: (406) 563-8500.
What is SARAH MULLOWNEY, M.D.'s NPI number?
SARAH MULLOWNEY, M.D.'s National Provider Identifier (NPI) is 1851779243, issued on 05/18/2015.
Does SARAH MULLOWNEY, M.D. prescribe more brand-name or generic drugs?
SARAH MULLOWNEY, M.D.'s prescribing is 2% brand-name and 98% generic drugs by claim count, with $19K in brand drug costs.
Does SARAH MULLOWNEY, M.D. prescribe opioids?
Yes, SARAH MULLOWNEY, M.D. had 28 opioid claims in 2023 with an opioid prescribing rate of 3.2%.
How many Addiction Medicine (Psychiatry & Neurology) Physician providers are there in the US?
There are 658 Addiction Medicine (Psychiatry & Neurology) Physician providers across 49 states in the US. The average Addiction Medicine (Psychiatry & Neurology) Physician provider writes 1,019 Medicare Part D claims per year.
What drugs does SARAH MULLOWNEY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SARAH MULLOWNEY, M.D.'s most frequently prescribed drugs include Trazodone Hcl, Duloxetine Hcl, Aripiprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SARAH MULLOWNEY, M.D. accept Medicare?
SARAH MULLOWNEY, M.D. appears in CMS Medicare data with 870 Part D claims and 42 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SARAH MULLOWNEY, M.D.'s credentials?
SARAH MULLOWNEY, M.D.'s NPI is 1851779243 with credentials M.D.. 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