2026 NPPES data Medical Physician Assistant NPI 1366798126 PA
Verify on CMS →

KATHLEEN MILLER, PA

Medical Physician Assistant 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
2K
Medicare Part D claims · 208 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: KATHLEEN MILLER, PA is a Medical Physician Assistant ([object Object]) practicing in BILLINGS, Montana with a Medicare Part D prescribing footprint of 2K claims across 208 beneficiaries — 13% brand-name prescribing .

What the federal data shows

KATHLEEN MILLER, PA filed 1,672 Medicare Part D claims in 2023 as a Medical Physician Assistant in BILLINGS, Montana, prescribing 87% generic.

2K
Part D claims, 2023
87%
generic prescribing

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.

KATHLEEN MILLER, PA at a glance

Quality data not reported

NPI registry status

Active

Issued 07/31/2012

NPI 1366798126

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

1,672 55% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Montana

How Medical Physician Assistant compares to other specialties among Montana providers

Montana providers

Medical Physician Assistant share within Montana

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Montana

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

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

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — 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).

KATHLEEN MILLER, PA is a Medical Physician Assistant provider practicing in BILLINGS, Montana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA. NPI: 1366798126. 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.

KATHLEEN MILLER, PA appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA credentials at 2223 MISSION WAY, BILLINGS, MT, 59102, with a listed phone of (406) 237-8989. NPI 1366798126 was issued on 07/31/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MILLER 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 1,672 prescription claims written by this provider, covering 208 Medicare beneficiaries and totaling roughly $148K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 3.0%. 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.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

2223 MISSION WAY
BILLINGS, MT 59102

Provider Details

NPI 1366798126
Specialty Medical Physician Assistant
Credentials PA
Gender Female
NPI Issued 07/31/2012

Hospital and facility affiliations

Facilities where KATHLEEN MILLER, PA 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.

SCL HEALTH MEDICAL GROUP - BILLINGS LLC
BILLINGS, 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).

Brand vs generic prescribing mix · Typical

KATHLEEN MILLER, PA — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 1,672 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.

1,672
Total Claims
$148K
Total Drug Cost
208
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,373
Total Day Supply
95,830
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$122K
Generic Drug Cost
$26K
Opioid Claims
50 (3.0% rate)
Antibiotic Claims
30

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
1.19
Gender Split
83% female / 17% male
Age Distribution
<65: 32, 65-74: 107, 75-84: 49, 85+: 20

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Lisinopril
100
Albuterol Sulfate Hfa
Albuterol Sulfate
77
Atorvastatin Calcium
71
Levothyroxine Sodium
61
Gabapentin
49
Losartan Potassium
48
Amlodipine Besylate
46
Omeprazole
42
Hydrochlorothiazide
32
Montelukast Sodium
29

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

Medical Physician Assistant Overview

How KATHLEEN MILLER, PA fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

KATHLEEN MILLER, PA's 1,672 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Montana

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

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is KATHLEEN MILLER, PA's specialty?
KATHLEEN MILLER, PA specializes in Medical Physician Assistant and practices in BILLINGS, Montana. Credentials: PA.
How much does KATHLEEN MILLER, PA prescribe under Medicare Part D?
In 2023, KATHLEEN MILLER, PA wrote 1,672 Medicare Part D claims totaling $148K in drug costs for 208 beneficiaries.
Where is KATHLEEN MILLER, PA located?
KATHLEEN MILLER, PA is located at 2223 MISSION WAY, BILLINGS, MT, 59102. Phone: (406) 237-8989.
What is KATHLEEN MILLER, PA's NPI number?
KATHLEEN MILLER, PA's National Provider Identifier (NPI) is 1366798126, issued on 07/31/2012.
Does KATHLEEN MILLER, PA prescribe more brand-name or generic drugs?
KATHLEEN MILLER, PA's prescribing is 13% brand-name and 87% generic drugs by claim count, with $122K in brand drug costs.
Does KATHLEEN MILLER, PA prescribe opioids?
Yes, KATHLEEN MILLER, PA had 50 opioid claims in 2023 with an opioid prescribing rate of 3.0%.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does KATHLEEN MILLER, PA prescribe most often?
Based on 2023 Medicare Part D data, KATHLEEN MILLER, PA's most frequently prescribed drugs include Lisinopril, Albuterol Sulfate Hfa, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHLEEN MILLER, PA accept Medicare?
KATHLEEN MILLER, PA appears in CMS Medicare data with 1,672 Part D claims and 208 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHLEEN MILLER, PA's credentials?
KATHLEEN MILLER, PA's NPI is 1366798126 with credentials PA. 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