John R. Tretter, M.D.
Cardiovascular Disease Physician · Casa Grande, AZ
John R. Tretter, M.D. is a cardiovascular disease physician with a practice address in Casa Grande, Arizona, and NPI 1346234564, issued on Sep 2, 2005. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- John R. Tretter
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 17169 NY
Self-reported in NPPES; status is on the state search - Practice location
- 803 N Salk Dr, Casa Grande, AZ 85122
- Phone
- (520) 836-6682
- Enumerated
- Sep 2, 2005
- Record last updated
- Oct 18, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (520) 836-6703
- Medicaid ID
- 01239183 NY
- Medicare enrollment
- Enrolled (PECOS I20091012000333); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 488 in Arizona → Look up another NPI →
Also registered at 803 N Salk Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Romas Kirvaitis, M.D.Interventional Cardiology Physician1174791636
Verify John R. Tretter 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% more Medicare Part D claims than the average cardiovascular disease physician in 2024
4,391 Medicare Part D claims for 776 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Atorvastatin Calcium464 claims
- Eliquis421 claims
- Metoprolol Succinate304 claims
- Losartan Potassium249 claims
- Amlodipine Besylate218 claims
- Entresto214 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.
Industry payments in 2024: $848.07
43 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Premier Cardiovascular Center, PLCCasa Grande, AZ
- Stone Med LLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John R. Tretter among 488 cardiovascular disease physician records in Arizona
John R. Tretter, M.D. is one of 488 cardiovascular disease physician records with a practice address in Arizona. 83% 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, 77% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1985 · median 1998 among the 329 with a school on file
- Record last updated2016 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Arizona
There are 488 cardiovascular disease physician records in Arizona.
All 488 in Arizona → Every provider in Casa Grande → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- William Jaffe, DOCasa Grande, AZ 851221083648158
- Joseph Parraz, CVTArizona City, AZ 851231508235730
- Cecile King, M.D.Apache Junction, AZ 851201114361748
- Shantha Kumar, M.D.Apache Junction, AZ 851201396768958
- Paul Olorunfemi, MDApache Junction, AZ 851201285016956
- Jordan Davidson, RNPhoenix, AZ 850541285585844
- Christopher Kanaan, MDPhoenix, AZ 850541457980112
- Sofia Lakhdar, MDPhoenix, AZ 850541225599574
Common questions
What is John R. Tretter, M.D.'s NPI number?
John R. Tretter, M.D.'s National Provider Identifier (NPI) is 1346234564, issued on Sep 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John R. Tretter, M.D. located?
The NPPES record lists a practice address at 803 N Salk Dr, Casa Grande, AZ, 85122. Phone: (520) 836-6682. Providers update this record themselves, so call before visiting.
How can I verify John R. Tretter, M.D.'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 John R. Tretter, M.D. prescribe under Medicare Part D?
In 2024, John R. Tretter, M.D. had 4,391 Medicare Part D claims for 776 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.