NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1831289453 PA
Verify on CMS → Darin Ryujin, PA
Physician Assistant in Salt Lake City, Utah.
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
276
Medicare Part D claims · 52 beneficiaries · Physician Assistant avg: 790
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
92.1/100
▲ 9 pts above national avg 83.1 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Darin Ryujin, PA reported a CMS MIPS final score of 92.1/100 - above the 83.1 national average - and filed 276 Medicare Part D claims in 2023.
- 92.1/100
- MIPS score · +9 vs avg
- 276
- Part D claims, 2023
- 87%
- 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.
Darin Ryujin, PA's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 32% higher than 68% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Darin Ryujin, PA sits
This provider among physician assistant peers
Across the 27,054 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Darin Ryujin, PA writes more Part D claims than 54% of them and scores higher on MIPS quality than 67% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one physician assistant peer from a representative sample of 60; the gold marker is Darin Ryujin, PA. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Darin Ryujin, PA?
High performer (top quartile)Primary specialty
Physician Assistant
Medicare Part D claims
276 65% vs specialty avg
MIPS final score
92.1/100 9 pts vs avg
Specialty distribution in Utah
How Physician Assistant compares to other specialties among Utah providers
Medicare quality performance, MIPS
Darin Ryujin, PA's 2023 MIPS final score plotted against the Physician Assistant national average
- MIPS Final Score
- 92.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Physician Assistant) - 92.1/100 vs national avg 83.1
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).
Darin Ryujin, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 375 S CHIPETA WAY, Salt Lake City, UT, 84108, with a listed phone of (801) 581-2016. NPI 1831289453 was issued on 10/13/2006.
Medicare Part D records for calendar year 2023 show 276 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $28K in drug spend, split 13% brand-name and 87% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 92.1/100 for the 2023 performance year (Quality 85.6), compared with the national average of 83.1.
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 | 1831289453 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Male |
| NPI Issued | 10/13/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
92.0664
Final Score
Avg: 83.1
85.5753
Quality
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Darin Ryujin, 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.
University OF Utah Adult Services
Salt Lake City, UT
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
Darin Ryujin, PA - brand share 13.0%
Physician Assistant average
13% brand-name claims vs 87% generic, on 276 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.
276
Total Claims
$28K
Total Drug Cost
52
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 388
- Total Day Supply
- 11,349
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $24K
- Generic Drug Cost
- $4K
Patient Demographics
- Average Patient Age
- 67.3 years
- Avg HCC Risk Score
- 1.51
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Darin Ryujin, PA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ropinirole Hcl
Ropinirole Hcl
70 claims
- Modafinil
Modafinil
29 claims
- Pramipexole Dihydr…
Pramipexole Dihydrochloride
28 claims
- Belsomra 21
Belsomra
21 claims
- Eszopiclone 19
Eszopiclone
19 claims
- Gabapentin 19
Gabapentin
19 claims
- Clonazepam 13
Clonazepam
13 claims
- Trazodone Hcl 13
Trazodone Hcl
13 claims
| Drug | Claims |
|---|---|
| Ropinirole Hcl | 70 |
| Modafinil | 29 |
| Pramipexole Dihydrochloride Pramipexole Di-Hcl | 28 |
| Belsomra Suvorexant | 21 |
| Eszopiclone | 19 |
| Gabapentin | 19 |
| Clonazepam | 13 |
| Trazodone Hcl | 13 |
| Dextroamphetamine-Amphet Er Dextroamphetamine/Amphetamine | 11 |
| Sunosi Solriamfetol Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Darin Ryujin, PA fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Darin Ryujin, PA's 276 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in Utah
Other clinicians with the same primary specialty enrolled in Utah, drawn from the same CMS NPPES roster as Ryujin.
Dr. Saeed Abbaszadeh
PA-C
Salt Lake City, UT
Christopher Abbott
Draper, UT
Dr. Jared Abrams
PA-C
Washington Terrace, UT
Dr. Claire Ackerman
PA-C
Salt Lake City, UT
Dr. Holly Adams
PA-C
Lehi, UT
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 Utah 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.
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Frequently Asked Questions
What is Darin Ryujin, PA's specialty? ▼
Darin Ryujin, PA specializes in Physician Assistant and practices in Salt Lake City, Utah. Credentials: PA.
How much does Darin Ryujin, PA prescribe under Medicare Part D? ▼
In 2023, Darin Ryujin, PA wrote 276 Medicare Part D claims totaling $28K in drug costs for 52 beneficiaries.
What is Darin Ryujin, PA's Medicare quality score? ▼
Darin Ryujin, PA has a CMS MIPS Final Score of 92.1/100 (Quality: 85.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Darin Ryujin, PA located? ▼
Darin Ryujin, PA is located at 375 S CHIPETA WAY, Salt Lake City, UT, 84108. Phone: (801) 581-2016.
What is Darin Ryujin, PA's NPI number? ▼
Darin Ryujin, PA's National Provider Identifier (NPI) is 1831289453, issued on 10/13/2006.
Does Darin Ryujin, PA prescribe more brand-name or generic drugs? ▼
Darin Ryujin, PA's prescribing is 13% brand-name and 87% generic drugs by claim count, with $24K 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 Darin Ryujin, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Darin Ryujin, PA's most frequently prescribed drugs include Ropinirole Hcl, Modafinil, Pramipexole Dihydrochloride. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Darin Ryujin, PA accept Medicare? ▼
Darin Ryujin, PA appears in CMS Medicare data with 276 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Darin Ryujin, PA's credentials? ▼
Darin Ryujin, PA's NPI is 1831289453 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
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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.