Doctor profile · Federal record
Dr. Jonathan Prostak, MD
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Ann Arbor, MI
- NPI 1235229105
- Accepts Medicare
- 21 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
1500 E Medical Center Dr
Ann Arbor, MI 481095000
(734) 936-4000 - Additional location
-
2799 W Grand Blvd
Detroit, MI 482022608
(800) 653-6568
fax (313) 876-1305 - Additional location
-
Weiler - Dept. of Medicine, 1825 Eastchester Road
Bronx, NY 10461
(718) 904-2400 - Mailing address
-
3621 S State St
Ann Arbor, MI 481081633
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- October 28, 2025
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Michigan #4301507548 · New York #236840
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235229105. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
411
Distinct HCPCS
8
Medicare allowed
$44,156
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 110 | 51 | $82 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 92 | 81 | $101 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 54 | 43 | $146 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 54 | 21 | $123 | |
99238 |
Hospital discharge day management, 30 minutes or less | 45 | 43 | $83 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 26 | 25 | $136 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 18 | 18 | $180 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 12 | 12 | $68 |
In context: peer comparison
Among 135 peers in Ann Arbor Internal Medicine Physician, average services per provider: 77. This provider delivers 5.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
796
Patients
359
Total drug cost
$120,384
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 134 | 66 | $3,282 |
| Amlodipine Besylate | Generic | 89 | 39 | $1,278 |
| Losartan Potassium | Generic | 65 | 29 | $1,162 |
| Gabapentin | Generic | 64 | 31 | $1,206 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 56 | 24 | $2,525 |
| Jardiance (Empagliflozin) | Brand | 49 | 20 | $63,181 |
| Metoprolol Succinate | Generic | 49 | 22 | $854 |
| Metformin Hcl | Generic | 48 | 21 | $391 |
| Furosemide | Generic | 43 | 24 | $354 |
| Lisinopril | Generic | 40 | 18 | $476 |
Hospital affiliations
Frequently asked questions
What is Dr. Jonathan Prostak's medical specialty?
Dr. Jonathan Prostak practices Internal Medicine Physician in Ann Arbor, MI.
Where does Dr. Jonathan Prostak practice?
Dr. Jonathan Prostak practices at 1500 E Medical Center Dr, Ann Arbor, MI 481095000. Office phone: 7349364000.
What is Dr. Jonathan Prostak's NPI?
Dr. Jonathan Prostak's National Provider Identifier (NPI) is 1235229105, issued by NPPES.
Does Dr. Jonathan Prostak accept Medicare assignment?
Yes. Dr. Jonathan Prostak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jonathan Prostak commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.