Doctor profile · Federal record
Dr. John Tretter, M.D.
Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Casa Grande, AZ
- NPI 1346234564
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
803 N Salk Dr, Buildings A&B
Casa Grande, AZ 851225447
(520) 836-6682
fax (520) 836-6703
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- October 18, 2016
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207RC0000X — NUCC code
- State license (1)
- New York #17169
- Medicaid
- NY #01239183
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1346234564. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,921
Distinct HCPCS
10
Medicare allowed
$271,479
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 610 | 362 | $124 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 350 | 347 | $179 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 340 | 128 | $78 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 306 | 299 | $67 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 240 | 222 | $14 | |
93016 |
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician | 168 | 168 | $21 | |
93017 |
Exercise or drug-induced heart stress test with electrocardiogram (ecg) | 168 | 168 | $26 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 149 | 135 | $89 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 141 | 128 | $127 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 92 | 92 | $163 |
In context: peer comparison
Among 1 peers in Casa Grande Cardiovascular Disease Physician, average services per provider: 121. This provider delivers 24× the peer median.Open Payments
Industry payments received
All-time total
$848
Transactions
41
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 12 | $240.72 | |
| Merck Sharp & Dohme LLC | 4 | $126.75 | |
| AstraZeneca Pharmaceuticals Lp | 5 | $77.21 | |
| Amgen INC. | 4 | $55.82 | |
| Kiniksa Pharmaceuticals International, Plc | 1 | $42.15 | |
| Zoll Services LLC (A/K/A Zoll LifeCor Corp) | 3 | $39.05 | |
| Kestra Medical Technology Services, INC. | 2 | $35.96 | |
| E.R. Squibb & Sons, L.L.C. | 2 | $31.84 | |
| Surmodics, INC. | 1 | $29.70 | |
| Pfizer INC. | 2 | $28.98 | |
| Abbott Laboratories | 1 | $24.38 | |
| Novo Nordisk INC | 1 | $23.90 | |
| Lexicon Pharmaceuticals, INC. | 1 | $22.68 | |
| Sanofi-Aventis U.S. LLC | 1 | $21.03 | |
| Siemens Medical Solutions USA, INC. | 1 | $16.67 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,862
Patients
966
Total drug cost
$812,476
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 451 | 158 | $6,847 |
| Eliquis (Apixaban) | Brand | 390 | 102 | $390,868 |
| Metoprolol Succinate | Generic | 272 | 87 | $4,770 |
| Losartan Potassium | Generic | 219 | 86 | $2,871 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 215 | 73 | $3,446 |
| Furosemide | Generic | 207 | 75 | $1,052 |
| Entresto (Sacubitril/Valsartan) | Brand | 191 | 57 | $224,891 |
| Metoprolol Tartrate | Generic | 189 | 67 | $1,665 |
| Amlodipine Besylate | Generic | 184 | 65 | $992 |
| Carvedilol | Generic | 138 | 50 | $1,524 |
Hospital affiliations
Frequently asked questions
What is Dr. John Tretter's medical specialty?
Dr. John Tretter practices Cardiovascular Disease Physician in Casa Grande, AZ.
Where does Dr. John Tretter practice?
Dr. John Tretter practices at 803 N Salk Dr, Casa Grande, AZ 851225447. Office phone: 5208366682.
What is Dr. John Tretter's NPI?
Dr. John Tretter's National Provider Identifier (NPI) is 1346234564, issued by NPPES.
Does Dr. John Tretter accept Medicare assignment?
Yes. Dr. John Tretter accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Tretter commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.