Gregory P. Clark, P.A.
Physician Assistant · Powell, WY
Gregory P. Clark, P.A. is a physician assistant with a practice address in Powell, Wyoming, and NPI 1730170796, issued on Oct 31, 2005. Check the license (Wyoming 203, as entered in NPPES) with the Wyoming board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory P. Clark
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 203 WY
Self-reported in NPPES; status is on the state search - Practice location
- 777 Avenue H, Powell, WY 82435
- Phone
- (307) 754-3405
- Enumerated
- Oct 31, 2005
- Record last updated
- May 13, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (307) 754-1207
- Medicaid ID
- 115812100 WY
- Medicare enrollment
- Enrolled (PECOS I20051220000978); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 260 in Wyoming → Look up another NPI →
Also registered at 777 Avenue H
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Bellamy, D.O.Emergency Medicine Physician1497076152
Verify Gregory P. Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wyoming board licenses this profession
Search for license 203Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average physician assistant in 2024
82 Medicare Part D claims for 37 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Oxycodone Hcl16 claims
- Meloxicam11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 71.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Holistic Pain Management OF Wyoming LLCRiverton, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory P. Clark among 260 physician assistant records in Wyoming
Gregory P. Clark, P.A. is one of 260 physician assistant records with a practice address in Wyoming. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1998 · median 2015 among the 176 with a school on file
- Record last updated2015 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 physician assistant records list a practice address in Powell
They are 12 of the 250 NPPES records with a practice address in Powell, and 260 physician assistant records in Wyoming.
All 260 in Wyoming → Every provider in Powell → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Amy Buck, PAPowell, WY 824351952751075
- Joseph Davidson, PAPowell, WY 824351144704289
- Lisa Hobby, PA-CPowell, WY 824351669461968
- Lisa Jarvis, PAPowell, WY 824351780777169
- Jana Keeler, PA-CPowell, WY 824351003079302
- Erin Mischke, PAPowell, WY 824351811291172
- Angela Redder, PA-CPowell, WY 824351891070744
- Heather Sanders, P.A.Powell, WY 824351548419666
Common questions
What is Gregory P. Clark, P.A.'s NPI number?
Gregory P. Clark, P.A.'s National Provider Identifier (NPI) is 1730170796, issued on Oct 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory P. Clark, P.A. located?
The NPPES record lists a practice address at 777 Avenue H, Powell, WY, 82435. Phone: (307) 754-3405. Providers update this record themselves, so call before visiting.
How can I verify Gregory P. Clark, P.A.'s license?
NPPES lists Wyoming license number 203, as entered by the provider. Search the Wyoming board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory P. Clark, P.A. prescribe under Medicare Part D?
In 2024, Gregory P. Clark, P.A. had 82 Medicare Part D claims for 37 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Gregory P. Clark, P.A.'s MIPS final score?
The 2023 MIPS final score is 71.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.