2026 NPPES data Physician Assistant NPI 1063789311 PA
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KATHERINE ASSMUS, PA

Physician Assistant in MERIDIAN, Idaho. 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 · 328 beneficiaries · Physician Assistant avg: 790
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$113.9
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KATHERINE ASSMUS, PA is a Physician Assistant ([object Object]) practicing in MERIDIAN, Idaho with a Medicare Part D prescribing footprint of 2K claims across 328 beneficiaries — 22% brand-name prescribing . Industry payments of $113.9 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KATHERINE ASSMUS, PA filed 1,957 Medicare Part D claims in 2023 across MERIDIAN, Idaho. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

KATHERINE ASSMUS, PA at a glance

Quality data not reported

NPI registry status

Active

Issued 11/30/2011

NPI 1063789311

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

1,957 148% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Idaho

How Physician Assistant compares to other specialties among Idaho providers

Idaho providers

Physician Assistant share within Idaho

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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).

KATHERINE ASSMUS, PA is a Physician Assistant provider practicing in MERIDIAN, Idaho, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA. NPI: 1063789311. 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.

KATHERINE ASSMUS, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 3525 E LOUISE DR, MERIDIAN, ID, 83642, with a listed phone of (208) 322-1680. NPI 1063789311 was issued on 11/30/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ASSMUS 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 1,957 prescription claims written by this provider, covering 328 Medicare beneficiaries and totaling roughly $512K in drug spend, split 22% brand-name and 78% generic by claim count. 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

3525 E LOUISE DR
MERIDIAN, ID 83642

Provider Details

NPI 1063789311
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 11/30/2011

Hospital and facility affiliations

Facilities where KATHERINE ASSMUS, 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.

ST LUKES CLINIC-TREASURE VALLEY LLC
EAGLE, ID

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 KATHERINE ASSMUS, PA. Source: openpaymentsdata.cms.gov.

Total received

$114

Largest payer

Novo Nordisk Inc

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 · Typical

KATHERINE ASSMUS, PA — brand share 22.0%
Specialty average (est.)

22% brand-name claims vs 78% generic, on 1,957 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.

1,957
Total Claims
$512K
Total Drug Cost
328
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,813
Total Day Supply
143,556
Brand vs Generic
22% brand / 78% generic
Brand Drug Cost
$468K
Generic Drug Cost
$45K

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
2.38
Gender Split
47% female / 53% male
Age Distribution
<65: 28, 65-74: 129, 75-84: 120, 85+: 51

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metoprolol Succinate
252
Spironolactone
242
Bumetanide
200
Eliquis
Apixaban
170
Furosemide
155
Potassium Chloride
127
Losartan Potassium
107
Farxiga
Dapagliflozin Propanediol
77
Atorvastatin Calcium
76
Lisinopril
71

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

Physician Assistant Overview

How KATHERINE ASSMUS, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

KATHERINE ASSMUS, PA's 1,957 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Idaho

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

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

Frequently Asked Questions

What is KATHERINE ASSMUS, PA's specialty?
KATHERINE ASSMUS, PA specializes in Physician Assistant and practices in MERIDIAN, Idaho. Credentials: PA.
How much does KATHERINE ASSMUS, PA prescribe under Medicare Part D?
In 2023, KATHERINE ASSMUS, PA wrote 1,957 Medicare Part D claims totaling $512K in drug costs for 328 beneficiaries.
Where is KATHERINE ASSMUS, PA located?
KATHERINE ASSMUS, PA is located at 3525 E LOUISE DR, MERIDIAN, ID, 83642. Phone: (208) 322-1680.
What is KATHERINE ASSMUS, PA's NPI number?
KATHERINE ASSMUS, PA's National Provider Identifier (NPI) is 1063789311, issued on 11/30/2011.
Does KATHERINE ASSMUS, PA prescribe more brand-name or generic drugs?
KATHERINE ASSMUS, PA's prescribing is 22% brand-name and 78% generic drugs by claim count, with $468K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does KATHERINE ASSMUS, PA prescribe most often?
Based on 2023 Medicare Part D data, KATHERINE ASSMUS, PA's most frequently prescribed drugs include Metoprolol Succinate, Spironolactone, Bumetanide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHERINE ASSMUS, PA accept Medicare?
KATHERINE ASSMUS, PA appears in CMS Medicare data with 1,957 Part D claims and 328 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHERINE ASSMUS, PA's credentials?
KATHERINE ASSMUS, PA's NPI is 1063789311 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