NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1730170796 P.A.
Verify on CMS → Gregory Clark, P.A.
Physician Assistant in Powell, Wyoming.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 149,975 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
81
Medicare Part D claims · 36 beneficiaries · Physician Assistant avg: 790
MIPS score
71.8/100
▼ 11 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gregory Clark, P.A. reported a CMS MIPS final score of 71.8/100 - below the 83.1 national average - and filed 81 Medicare Part D claims in 2023.
- 71.8/100
- MIPS score · -11 vs avg
- 81
- Part D claims, 2023
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.
Gregory Clark, P.A.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
72 9th percentile higher than 9% 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 Gregory Clark, P.A. 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, Gregory Clark, P.A. writes more Part D claims than 21% of them and scores higher on MIPS quality than 7% - placing this provider in the lower-volume, lower-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 Gregory Clark, P.A.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Gregory Clark, P.A.?
Below national averagePrimary specialty
Physician Assistant
Medicare Part D claims
81 90% vs specialty avg
MIPS final score
71.8/100 11.3 pts vs avg
Specialty distribution in Wyoming
How Physician Assistant compares to other specialties among Wyoming providers
Medicare quality performance, MIPS
Gregory Clark, P.A.'s 2023 MIPS final score plotted against the Physician Assistant national average
- MIPS Final Score
- 71.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Physician Assistant) - 71.8/100 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).
Gregory Clark, P.A. appears in the CMS NPPES registry as a Physician Assistant provider holding P.A. credentials at 777 AVENUE H, Powell, WY, 82435, with a listed phone of (307) 754-3405. NPI 1730170796 was issued on 10/31/2005.
Medicare Part D records for calendar year 2023 show 81 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 55.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 71.8/100 for the 2023 performance year (Quality 77.3, Cost 28.6), compared with the national average of 83.1.
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
Provider Details
| NPI | 1730170796 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | P.A. |
| Gender | Male |
| NPI Issued | 10/31/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
71.7793
Final Score
Avg: 83.1
77.3079
Quality
28.623
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Gregory Clark, P.A. 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.
Holistic Pain Management OF Wyoming LLC
Riverton, WY
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
81
Total Claims
$2K
Total Drug Cost
36
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 81
- Total Day Supply
- 988
- Generic Drug Cost
- $914
- Opioid Claims
- 45 (55.6% rate)
Patient Demographics
- Average Patient Age
- 72.4 years
- Avg HCC Risk Score
- 0.94
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Clark, P.A. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone Hcl
Oxycodone Hcl
21 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
16 claims
- Diclofenac Sodium
Diclofenac Sodium
12 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 21 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 16 |
| Diclofenac Sodium | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Gregory Clark, P.A. fits within the Physician Assistant landscape nationally.
149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Gregory Clark, P.A.'s 81 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in Wyoming
Other clinicians with the same primary specialty enrolled in Wyoming, drawn from the same CMS NPPES roster as Clark.
Dr. Thomas Ahern
PA-C
Cody, WY
Dr. Nicole Alexander
PA-C
Laramie, WY
Dr. Valerie Amstadt
PAC
Gillette, WY
Dr. Eric Anderson
PA-C
Afton, WY
Dr. Lauren Andrews
PA-C
Cheyenne, WY
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 Wyoming 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 Gregory Clark, P.A.'s specialty? ▼
Gregory Clark, P.A. specializes in Physician Assistant and practices in Powell, Wyoming. Credentials: P.A..
How much does Gregory Clark, P.A. prescribe under Medicare Part D? ▼
In 2023, Gregory Clark, P.A. wrote 81 Medicare Part D claims totaling $2K in drug costs for 36 beneficiaries.
What is Gregory Clark, P.A.'s Medicare quality score? ▼
Gregory Clark, P.A. has a CMS MIPS Final Score of 71.8/100 (Quality: 77.3, Cost: 28.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gregory Clark, P.A. located? ▼
Gregory Clark, P.A. is located at 777 AVENUE H, Powell, WY, 82435. Phone: (307) 754-3405.
What is Gregory Clark, P.A.'s NPI number? ▼
Gregory Clark, P.A.'s National Provider Identifier (NPI) is 1730170796, issued on 10/31/2005.
Does Gregory Clark, P.A. prescribe opioids? ▼
Yes, Gregory Clark, P.A. had 45 opioid claims in 2023 with an opioid prescribing rate of 55.6%.
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 Gregory Clark, P.A. prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Clark, P.A.'s most frequently prescribed drugs include Oxycodone Hcl, Hydrocodone-Acetaminophen, Diclofenac Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Clark, P.A. accept Medicare? ▼
Gregory Clark, P.A. appears in CMS Medicare data with 81 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Clark, P.A.'s credentials? ▼
Gregory Clark, P.A.'s NPI is 1730170796 with credentials P.A.. 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
Compiled from official public sources by the PlainDoctor editorial team.