NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1518679851 PA-C
Verify on CMS → Amber Authier, PA-C
Medical Physician Assistant in Yankton, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,694 in Medical Physician Assistant, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
931
Medicare Part D claims · 183 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Amber Authier, PA-C filed 931 Medicare Part D claims in 2024 as a Medical Physician Assistant in Yankton, South Dakota, prescribing 77% generic.
- 931
- Part D claims, 2024
- 77%
- generic prescribing
- ≥74th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Amber Authier, PA-C
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1518679851), first enumerated 12/19/2022.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 931 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1518679851 · Medical Physician Assistant
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1518679851
- ENUM-RECENT 2022
- TAX-MID 41K Medical Physician
- RX-LIGHT 931
- BOOK-THIN 108 in South Dakota
- PHOTO-ENUM Gretchen Furman, PA-C · 2022
Amber Authier, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
931 ≥ 74th percentile 74% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Amber Authier, PA-C?
Quality data not reportedPrimary specialty
Medical Physician Assistant
Medicare Part D claims
931 18% vs specialty avg
Specialty distribution in South Dakota
How Medical Physician Assistant compares to other specialties among South Dakota providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Medical Physician Assistant. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1518679851 |
|---|---|
| Specialty | Medical Physician Assistant |
| Credentials | PA-C |
| Gender | Female |
| NPI Issued | 12/19/2022 |
Hospital and facility affiliations
Facilities where Amber Authier, PA-C 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.
Avera Mckennan
Miller, SD
St Michael's Hospital, Inc.
Tyndall, SD
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
Amber Authier, PA-C - brand share 23.0%
Medical Physician Assistant average
23% brand-name claims vs 77% generic, on 931 2024 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 2024.
931
Total Claims
$2.4M
Total Drug Cost
183
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,256.6
- Total Day Supply
- 33,306
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $2.3M
- Generic Drug Cost
- $49K
- Opioid Claims
- 22 (2.4% rate)
- Antibiotic Claims
- 37
Patient Demographics
- Average Patient Age
- 74.5 years
- Avg HCC Risk Score
- 2.05
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Amber Authier, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2024
- Anastrozole
Anastrozole
85 claims
- Potassium Chloride
Potassium Chloride
63 claims
- Letrozole
Letrozole
55 claims
- Revlimid
Revlimid
46 claims
- Ondansetron Hcl
Ondansetron Hcl
44 claims
- Alendronate Sodium
Alendronate Sodium
42 claims
- Mirtazapine
Mirtazapine
36 claims
- Prochlorperazine M… 28
Prochlorperazine Maleate
28 claims
| Drug | Claims |
|---|---|
| Anastrozole | 85 |
| Potassium Chloride | 63 |
| Letrozole | 55 |
| Revlimid Lenalidomide | 46 |
| Ondansetron Hcl | 44 |
| Alendronate Sodium | 42 |
| Mirtazapine | 36 |
| Prochlorperazine Maleate | 28 |
| Eliquis Apixaban | 27 |
| Dexamethasone | 26 |
* 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 Amber Authier, PA-C fits within the Medical Physician Assistant landscape nationally.
40,694
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,139
Avg Claims per Provider
Amber Authier, PA-C's 931 claims are below the specialty average of 1,139.
Nationwide Medical Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Authier, both outside South Dakota so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Medical Physician Assistant Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Authier.
One of 108 Medical Physician Assistant providers enrolled in South Dakota, 5 are shown here.
Ashley Anziano
PA-C
Rapid City, SD
Andrew Arends
PA-C
Beresford, SD
James Awuah
PA-C, MPH
Martin, SD
Mariah Baier
PA-C
Sioux Falls, SD
Brooklyn Behrens
PA
Martin, SD
Compare Medical Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Amber Authier, PA-C's specialty? ▼
Amber Authier, PA-C specializes in Medical Physician Assistant and practices in Yankton, South Dakota. Credentials: PA-C.
How much does Amber Authier, PA-C prescribe under Medicare Part D? ▼
In 2024, Amber Authier, PA-C wrote 931 Medicare Part D claims totaling $2.4M in drug costs for 183 beneficiaries.
Where is Amber Authier, PA-C located? ▼
Amber Authier, PA-C is located at 1104 W 8TH ST, Yankton, SD, 57078. Phone: (605) 665-7841.
What is Amber Authier, PA-C's NPI number? ▼
Amber Authier, PA-C's National Provider Identifier (NPI) is 1518679851, issued on 12/19/2022.
Does Amber Authier, PA-C prescribe more brand-name or generic drugs? ▼
Amber Authier, PA-C's prescribing is 23% brand-name and 77% generic drugs by claim count, with $2.3M in brand drug costs.
Does Amber Authier, PA-C prescribe opioids? ▼
Yes, Amber Authier, PA-C had 22 opioid claims in 2024 with an opioid prescribing rate of 2.4%.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,694 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,139 Medicare Part D claims per year.
What drugs does Amber Authier, PA-C prescribe most often? ▼
Based on 2024 Medicare Part D data, Amber Authier, PA-C's most frequently prescribed drugs include Anastrozole, Potassium Chloride, Letrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amber Authier, PA-C accept Medicare? ▼
Amber Authier, PA-C appears in CMS Medicare data with 931 Part D claims and 183 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amber Authier, PA-C's credentials? ▼
Amber Authier, PA-C's NPI is 1518679851 with credentials PA-C. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.