Jonathan Larmour Powell, MD
Family Medicine Physician · Chinle, AZ
Jonathan Larmour Powell, MD is a family medicine physician with a practice address in Chinle, Arizona, and NPI 1023447737, issued on Nov 3, 2013. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jonathan Larmour Powell
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A132545 CA
Self-reported in NPPES; status is on the state search - Practice location
- Highway 191, Chinle, AZ 86503
- Phone
- (917) 504-6337
- Enumerated
- Nov 3, 2013
- Record last updated
- Jan 4, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 170247 AZ
- Medicare enrollment
- Enrolled (PECOS I20180131001069); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 2013
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at Highway 191
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Thomas, NURSECommunity Health Registered Nurse1932301058
- Henrietta YazzieFamily Nurse Practitioner1700145919
Verify Jonathan Larmour Powell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average family medicine physician in 2024
2,009 Medicare Part D claims for 122 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Atorvastatin Calcium204 claims
- Lisinopril107 claims
- Omeprazole97 claims
- Amlodipine Besylate88 claims
- Synthroid86 claims
- Losartan Potassium81 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): 84.2 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
- Dhhs Phs Naihs Chinle Comprehensive Health Care FacilityChinle, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Larmour Powell among 3,119 family medicine physician records in Arizona
Jonathan Larmour Powell, MD is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2013 · median 2006 among the 1,775 with a school on file
- Record last updated2017 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 family medicine physician records list a practice address in Chinle
They are 10 of the 238 NPPES records with a practice address in Chinle, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Chinle → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Muna Ar-Rushdi, MDChinle, AZ 865031194991687
- Antonio Duran, M.D.Chinle, AZ 865031881785921
- Sheridan Finnie, MDChinle, AZ 865031538805031
- David McKee, FAMILY PRACTICEChinle, AZ 865031710056189
- John Perchalski, MDChinle, AZ 865031205817236
- Joseph Salay, M.D.Chinle, AZ 865031174659197
- Evan Thompson, M.D.Chinle, AZ 865031649343484
- Joanne Tollerton, MDChinle, AZ 865031639174915
Common questions
What is Jonathan Larmour Powell, MD's NPI number?
Jonathan Larmour Powell, MD's National Provider Identifier (NPI) is 1023447737, issued on Nov 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Larmour Powell, MD located?
The NPPES record lists a practice address at Highway 191, Chinle, AZ, 86503. Phone: (917) 504-6337. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Larmour Powell, MD's license?
Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jonathan Larmour Powell, MD prescribe under Medicare Part D?
In 2024, Jonathan Larmour Powell, MD had 2,009 Medicare Part D claims for 122 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Jonathan Larmour Powell, MD's MIPS final score?
The 2023 MIPS final score is 84.2 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.