Doctor profile · Federal record
Dr. Chi Ahn, M.D.
Internal Medicine Physician · Geriatric Medicine (Internal Medicine) Physician · Chicago, IL
- NPI 1578857835
- 15 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5140 N California Ave, Ste 705
Chicago, IL 606253645
(773) 989-7554 - Mailing address
-
2740 W Foster Ave, Ll7
Chicago, IL 606253500
Credentials & registration
- NPI registered
- June 2011 — 15 yrs on file
- Profile last updated
- October 30, 2020
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Illinois #036138610
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1578857835. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$24
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Aimmune Therapeutics, INC. | 1 | $24.04 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
356
Patients
106
Total drug cost
$11,517
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 52 | 31 | $979 |
| Omeprazole | Generic | 44 | 17 | $673 |
| Amlodipine Besylate | Generic | 29 | 14 | $166 |
| Levothyroxine Sodium | Generic | 27 | 0 | $257 |
| Losartan Potassium | Generic | 27 | 16 | $590 |
| Simvastatin | Generic | 26 | 14 | $265 |
| Tamsulosin Hcl | Generic | 21 | 0 | $270 |
| Eliquis (Apixaban) | Brand | 19 | 0 | $5,770 |
| Metformin Hcl | Generic | 19 | 14 | $266 |
| Metoprolol Succinate | Generic | 18 | 0 | $226 |
Frequently asked questions
What is Dr. Chi Ahn's medical specialty?
Dr. Chi Ahn practices Internal Medicine Physician in Chicago, IL.
Where does Dr. Chi Ahn practice?
Dr. Chi Ahn practices at 5140 N California Ave, Chicago, IL 606253645. Office phone: 7739897554.
What is Dr. Chi Ahn's NPI?
Dr. Chi Ahn's National Provider Identifier (NPI) is 1578857835, issued by NPPES.