NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1013311497 PA-C
Verify on CMS → Joel Horst, PA-C
Medical Physician Assistant in Salem, Oregon.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,580 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
937
Medicare Part D claims · 352 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Joel Horst, PA-C filed 937 Medicare Part D claims in 2023 as a Medical Physician Assistant in Salem, Oregon, prescribing 97% generic.
- 937
- Part D claims, 2023
- 97%
- 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.
Joel Horst, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
937 Top 25% higher than 75% 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 Joel Horst, PA-C?
Quality data not reportedPrimary specialty
Medical Physician Assistant
Medicare Part D claims
937 13% vs specialty avg
Specialty distribution in Oregon
How Medical Physician Assistant compares to other specialties among Oregon 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).
Joel Horst, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 5125 SKYLINE RD S, Salem, OR, 97306, with a listed phone of (503) 763-3639. NPI 1013311497 was issued on 10/14/2014.
Medicare Part D records for calendar year 2023 show 937 prescription claims written by this provider, covering 352 Medicare beneficiaries and totaling roughly $41K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 3.5%.
Medical Physician Assistant is a mid-sized specialty nationwide, with 40,580 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
Provider Details
| NPI | 1013311497 |
|---|---|
| Specialty | Medical Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 10/14/2014 |
Hospital and facility affiliations
Facilities where Joel Horst, 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.
Kaiser Foundation Health Plan OF The Northwest
Salem, OR
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 · Generic-heavy
Joel Horst, PA-C - brand share 3.0%
Medical Physician Assistant average
3% brand-name claims vs 97% generic, on 937 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.
937
Total Claims
$41K
Total Drug Cost
352
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,741
- Total Day Supply
- 43,998
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $26K
- Generic Drug Cost
- $15K
- Opioid Claims
- 33 (3.5% rate)
- Antibiotic Claims
- 314
Patient Demographics
- Average Patient Age
- 75.5 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 29% female / 71% male
- Age Distribution
- <65: 16, 65-74: 139, 75-84: 155, 85+: 42
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Joel Horst, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
201 claims
- Finasteride
Finasteride
84 claims
- Ciprofloxacin Hcl 66
Ciprofloxacin Hcl
66 claims
- Solifenacin Succin… 64
Solifenacin Succinate
64 claims
- Cephalexin 58
Cephalexin
58 claims
- Sulfamethoxazole-T… 51
Sulfamethoxazole-Trimethoprim
51 claims
- Oxybutynin Chlorid… 48
Oxybutynin Chloride Er
48 claims
- Amoxicillin 46
Amoxicillin
46 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 201 |
| Finasteride | 84 |
| Ciprofloxacin Hcl | 66 |
| Solifenacin Succinate | 64 |
| Cephalexin | 58 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 51 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 48 |
| Amoxicillin | 46 |
| Doxycycline Monohydrate | 45 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 31 |
* 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 Joel Horst, PA-C fits within the Medical Physician Assistant landscape nationally.
40,580
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider
Joel Horst, PA-C's 937 claims are below the specialty average of 1,077.
Nearby Medical Physician Assistant Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Horst.
Dr. Taylor Abdala
PA
Stayton, OR
Dr. Diana Aby-Daniel
PA
Portland, OR
Dr. Lola Achilova
P.A.-C
Portland, OR
Freddie Adame
Salem, OR
Dr. Joanna Adams
PA-C
Portland, OR
Compare Medical 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 Oregon medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical 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.
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Frequently Asked Questions
What is Joel Horst, PA-C's specialty? ▼
Joel Horst, PA-C specializes in Medical Physician Assistant and practices in Salem, Oregon. Credentials: PA-C.
How much does Joel Horst, PA-C prescribe under Medicare Part D? ▼
In 2023, Joel Horst, PA-C wrote 937 Medicare Part D claims totaling $41K in drug costs for 352 beneficiaries.
Where is Joel Horst, PA-C located? ▼
Joel Horst, PA-C is located at 5125 SKYLINE RD S, Salem, OR, 97306. Phone: (503) 763-3639.
What is Joel Horst, PA-C's NPI number? ▼
Joel Horst, PA-C's National Provider Identifier (NPI) is 1013311497, issued on 10/14/2014.
Does Joel Horst, PA-C prescribe more brand-name or generic drugs? ▼
Joel Horst, PA-C's prescribing is 3% brand-name and 97% generic drugs by claim count, with $26K in brand drug costs.
Does Joel Horst, PA-C prescribe opioids? ▼
Yes, Joel Horst, PA-C had 33 opioid claims in 2023 with an opioid prescribing rate of 3.5%.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,580 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 Joel Horst, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Joel Horst, PA-C's most frequently prescribed drugs include Tamsulosin Hcl, Finasteride, Ciprofloxacin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joel Horst, PA-C accept Medicare? ▼
Joel Horst, PA-C appears in CMS Medicare data with 937 Part D claims and 352 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joel Horst, PA-C's credentials? ▼
Joel Horst, PA-C's NPI is 1013311497 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
Compiled from official public sources by the PlainDoctor editorial team.
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.