2026 NPPES data Physician Assistant NPI 1043837404
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MADISON GROBERG

Physician Assistant in AMMON, 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
537
Medicare Part D claims · 46 beneficiaries · Physician Assistant avg: 790
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$349.57
21 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MADISON GROBERG filed 537 Medicare Part D claims in 2023 as a Physician Assistant in AMMON, Idaho, prescribing 80% generic.

537
Part D claims, 2023
80%
generic prescribing
$349.57
industry payments (Sunshine Act)

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.

MADISON GROBERG's Medicare Part D volume vs every U.S. prescriber

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

537 Top 34% higher than 66% 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%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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

What does the federal data show about MADISON GROBERG?

Quality data not reported

NPI registry status

Active

Issued 07/01/2020

NPI 1043837404

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

537 32% 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).

MADISON GROBERG appears in the CMS NPPES registry as a Physician Assistant provider at 2705 E 17TH ST, AMMON, ID, 83406, with a listed phone of (208) 346-7500. NPI 1043837404 was issued on 07/01/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GROBERG 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 537 prescription claims written by this provider, covering 46 Medicare beneficiaries and totaling roughly $190K in drug spend, split 20% brand-name and 80% 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

2705 E 17TH ST
AMMON, ID 83406

Provider Details

NPI 1043837404
Specialty Physician Assistant
Gender Female
NPI Issued 07/01/2020

Hospital and facility affiliations

Facilities where MADISON GROBERG 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.

PEARL HEALTH CLINIC
AMMON, 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 MADISON GROBERG. Source: openpaymentsdata.cms.gov.

Total received

$350

Largest payer

ABBVIE 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

MADISON GROBERG — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 537 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.

537
Total Claims
$190K
Total Drug Cost
46
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
628
Total Day Supply
17,196
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$179K
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
56.3 years
Avg HCC Risk Score
1.18
Gender Split
70% female / 30% male
Age Distribution
<65: 24, 65-74: 16, 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 MADISON GROBERG 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
Quetiapine Fumarate
48
Bupropion Xl
Bupropion Hcl
39
Spravato
Esketamine Hcl
39
Trazodone Hcl
39
Hydroxyzine Hcl
27
Clonidine Hcl
26
Fluoxetine Hcl
25
Vraylar
Cariprazine Hcl
18
Lamotrigine
17
Duloxetine Hcl
16

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

Physician Assistant Overview

How MADISON GROBERG fits within the Physician Assistant landscape nationally.

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

MADISON GROBERG's 537 claims are below 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 GROBERG.

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

Frequently Asked Questions

What is MADISON GROBERG's specialty?
MADISON GROBERG specializes in Physician Assistant and practices in AMMON, Idaho.
How much does MADISON GROBERG prescribe under Medicare Part D?
In 2023, MADISON GROBERG wrote 537 Medicare Part D claims totaling $190K in drug costs for 46 beneficiaries.
Where is MADISON GROBERG located?
MADISON GROBERG is located at 2705 E 17TH ST, AMMON, ID, 83406. Phone: (208) 346-7500.
What is MADISON GROBERG's NPI number?
MADISON GROBERG's National Provider Identifier (NPI) is 1043837404, issued on 07/01/2020.
Does MADISON GROBERG prescribe more brand-name or generic drugs?
MADISON GROBERG's prescribing is 20% brand-name and 80% generic drugs by claim count, with $179K 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 MADISON GROBERG prescribe most often?
Based on 2023 Medicare Part D data, MADISON GROBERG's most frequently prescribed drugs include Quetiapine Fumarate, Bupropion Xl, Spravato. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MADISON GROBERG accept Medicare?
MADISON GROBERG appears in CMS Medicare data with 537 Part D claims and 46 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MADISON GROBERG's credentials?
MADISON GROBERG's NPI is 1043837404. 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