NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1639416522 PA-C
Verify on CMS → Erin Monahan, PA-C
Physician Assistant in Duluth, Minnesota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,974 in 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
780
Medicare Part D claims · 298 beneficiaries · Physician Assistant avg: 790
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Erin Monahan, PA-C filed 780 Medicare Part D claims in 2023 as a Physician Assistant in Duluth, Minnesota, prescribing 81% generic.
- 780
- Part D claims, 2023
- 81%
- 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.
Erin Monahan, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
780 Top 29% higher than 71% of 1,370,886 prescribers
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 Erin Monahan, PA-C?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
780 1% vs specialty avg
Specialty distribution in Minnesota
How Physician Assistant compares to other specialties among Minnesota 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 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).
Erin Monahan, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 400 E 3RD ST, Duluth, MN, 55805, with a listed phone of (218) 786-8364. NPI 1639416522 was issued on 01/11/2013.
Medicare Part D records for calendar year 2023 show 780 prescription claims written by this provider, covering 298 Medicare beneficiaries and totaling roughly $770K in drug spend, split 19% brand-name and 81% generic by claim count.
Physician Assistant is a high-volume specialty nationwide, with 150,974 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
Provider Details
| NPI | 1639416522 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA-C |
| Gender | Female |
| NPI Issued | 01/11/2013 |
Hospital and facility affiliations
Facilities where Erin Monahan, 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.
The Duluth Clinic Ltd
Duluth, MN
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
Erin Monahan, PA-C - brand share 19.0%
Physician Assistant average
19% brand-name claims vs 81% generic, on 780 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.
780
Total Claims
$770K
Total Drug Cost
298
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,047
- Total Day Supply
- 27,887
- Brand vs Generic
- 19% brand / 81% generic
- Brand Drug Cost
- $718K
- Generic Drug Cost
- $51K
- Antibiotic Claims
- 95
Patient Demographics
- Average Patient Age
- 71.3 years
- Avg HCC Risk Score
- 1.02
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 45, 65-74: 140, 75-84: 87, 85+: 26
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Erin Monahan, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ketoconazole
Ketoconazole
62 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
60 claims
- Doxycycline Monohy…
Doxycycline Monohydrate
57 claims
- Metronidazole
Metronidazole
41 claims
- Betamethasone Dipr…
Betamethasone Diprop Augmented
39 claims
- Clobetasol Propion…
Clobetasol Propionate
33 claims
- Fluorouracil
Fluorouracil
32 claims
- Dupixent Syringe
Dupixent Syringe
31 claims
| Drug | Claims |
|---|---|
| Ketoconazole | 62 |
| Triamcinolone Acetonide | 60 |
| Doxycycline Monohydrate | 57 |
| Metronidazole | 41 |
| Betamethasone Diprop Augmented Betamethasone/Propylene Glyc | 39 |
| Clobetasol Propionate | 33 |
| Fluorouracil | 32 |
| Dupixent Syringe Dupilumab | 31 |
| Tretinoin | 26 |
| Methotrexate Methotrexate Sodium | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Erin Monahan, PA-C fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Erin Monahan, PA-C's 780 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Monahan.
Dr. Ramona Aaseby-Aguilera
PA-C
Minneapolis, MN
Dr. Aimee Abben
PA-C
Saint Paul, MN
Yasmine Abdelal
Minneapolis, MN
Dr. Deqa Abdi
PA-C
Rochester, MN
Dr. Najma Abdi
PA-C
Minneapolis, MN
Compare Physician Assistant nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Minnesota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Minnesota
Frequently Asked Questions
What is Erin Monahan, PA-C's specialty? ▼
Erin Monahan, PA-C specializes in Physician Assistant and practices in Duluth, Minnesota. Credentials: PA-C.
How much does Erin Monahan, PA-C prescribe under Medicare Part D? ▼
In 2023, Erin Monahan, PA-C wrote 780 Medicare Part D claims totaling $770K in drug costs for 298 beneficiaries.
Where is Erin Monahan, PA-C located? ▼
Erin Monahan, PA-C is located at 400 E 3RD ST, Duluth, MN, 55805. Phone: (218) 786-8364.
What is Erin Monahan, PA-C's NPI number? ▼
Erin Monahan, PA-C's National Provider Identifier (NPI) is 1639416522, issued on 01/11/2013.
Does Erin Monahan, PA-C prescribe more brand-name or generic drugs? ▼
Erin Monahan, PA-C's prescribing is 19% brand-name and 81% generic drugs by claim count, with $718K in brand drug costs.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 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 Erin Monahan, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Erin Monahan, PA-C's most frequently prescribed drugs include Ketoconazole, Triamcinolone Acetonide, Doxycycline Monohydrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Erin Monahan, PA-C accept Medicare? ▼
Erin Monahan, PA-C appears in CMS Medicare data with 780 Part D claims and 298 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Erin Monahan, PA-C's credentials? ▼
Erin Monahan, PA-C's NPI is 1639416522 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 (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
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 May 2026.