Doctor profile · Federal record
Dr. James Diener, D.O.
Internal Medicine Physician (CMS: Internal Medicine) · Cadillac, MI
- NPI 1588004915
- Accepts Medicare
- 13 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
7985 S Mackinaw Trl
Cadillac, MI 496018111
(231) 779-0320
fax (231) 779-1367 - Additional location
-
100 N Roland St
Mc Bain, MI 496579683
(231) 825-8101
fax (231) 825-8104
Credentials & registration
- NPI registered
- June 2013 — 13 yrs on file
- Profile last updated
- November 23, 2020
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Michigan #5101020738
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588004915. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$116
Transactions
6
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk Inc | 2 | $38.03 | |
| ABBVIE INC. | 1 | $23.60 | |
| Mylan Specialty L.P. | 1 | $20.65 | |
| Otsuka America Pharmaceutical, Inc. | 1 | $18.07 | |
| Lilly USA, LLC | 1 | $16.05 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
4,111
Patients
1,014
Total drug cost
$73,611
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 594 | 145 | $10,579 |
| Levothyroxine Sodium | Generic | 342 | 88 | $5,780 |
| Lisinopril | Generic | 337 | 90 | $3,668 |
| Gabapentin | Generic | 327 | 48 | $4,820 |
| Omeprazole | Generic | 324 | 75 | $5,816 |
| Amlodipine Besylate | Generic | 293 | 79 | $3,166 |
| Losartan Potassium | Generic | 292 | 83 | $6,781 |
| Hydrochlorothiazide | Generic | 281 | 78 | $1,405 |
| Metformin Hcl | Generic | 240 | 64 | $2,378 |
| Metoprolol Succinate | Generic | 230 | 66 | $5,290 |
Hospital affiliations
Frequently asked questions
What is Dr. James Diener's medical specialty?
Dr. James Diener practices Internal Medicine Physician in Cadillac, MI.
Where does Dr. James Diener practice?
Dr. James Diener practices at 7985 S Mackinaw Trl, Cadillac, MI 496018111. Office phone: 2317790320.
What is Dr. James Diener's NPI?
Dr. James Diener's National Provider Identifier (NPI) is 1588004915, issued by NPPES.
Does Dr. James Diener accept Medicare assignment?
Yes. Dr. James Diener accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.