John Clinton Griffin, DO
Internal Medicine Physician · Mesa, AZ
John Clinton Griffin, DO is an internal medicine physician with a practice address in Mesa, Arizona, and NPI 1235628033, issued on May 7, 2018. Check the license (Arizona 009394, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Clinton Griffin
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 009394 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1301 S Crismon RD, Mesa, AZ 85209
- Phone
- (480) 373-2370
- Enumerated
- May 7, 2018
- Record last updated
- Feb 18, 2022
- Fax
- (480) 373-2375
- Medicare enrollment
- Enrolled (PECOS I20220629002594); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 1301 S Crismon RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Clinton Griffin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 009394Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,347 Medicare Part D claims for 366 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 41 claims were for opioids.
Most prescribed
- Atorvastatin Calcium95 claims
- Eliquis67 claims
- Metoprolol Tartrate49 claims
- Furosemide48 claims
- Clopidogrel47 claims
- Pantoprazole Sodium47 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.
Bills Medicare through 2 group practices
- Aia Hospitalists LLCPhoenix, AZ
- Mulberry Medical LLCTempe, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Clinton Griffin among 2,853 internal medicine physician records in Arizona
John Clinton Griffin, DO is one of 2,853 internal 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 2018, is newer than 77% of them.
- NPI issued2018 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2018 · median 2003 among the 1,643 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
157 internal medicine physician records list a practice address in Mesa
They are 157 of the 9,151 NPPES records with a practice address in Mesa, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Mesa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ankur Bant, M.D.Mesa, AZ 852091164544979
- Muhammad Chaudhry, MDMesa, AZ 852091609001262
- Nathan Duffin, D.O.Mesa, AZ 852091497016190
- Travis Fisher, MDMesa, AZ 852091366536732
- Nicholas Harrell, M.D.Mesa, AZ 852091467795617
- Bassam Hattab, M.D.Mesa, AZ 852091023420189
- Joshua Jalad, MDMesa, AZ 852091508200445
- Sujit Magiyawala, MDMesa, AZ 852091336109131
Common questions
What is John Clinton Griffin, DO's NPI number?
John Clinton Griffin, DO's National Provider Identifier (NPI) is 1235628033, issued on May 7, 2018. An NPI identifies a provider in billing; it is not a license.
Where is John Clinton Griffin, DO located?
The NPPES record lists a practice address at 1301 S Crismon RD, Mesa, AZ, 85209. Phone: (480) 373-2370. Providers update this record themselves, so call before visiting.
How can I verify John Clinton Griffin, DO's license?
NPPES lists Arizona license number 009394, as entered by the provider. 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 John Clinton Griffin, DO prescribe under Medicare Part D?
In 2024, John Clinton Griffin, DO had 1,347 Medicare Part D claims for 366 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.