Doctor profile · Federal record
Dr. Jah-Won Koo, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Chicago, IL
- NPI 1235241837
- Accepts Medicare
- MIPS 91.3 / 100 · 2023
- 31 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1700 W van Buren St, Suite 500
Chicago, IL 606123218
(312) 563-2875
fax (312) 942-3012
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- February 12, 2008
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Illinois #036-097878
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235241837. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
722
Distinct HCPCS
10
Medicare allowed
$65,405
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 235 | 125 | $135 | |
36415 |
Insertion of needle into vein for collection of blood sample | 105 | 74 | $8 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 92 | 92 | $137 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 52 | 43 | $95 | |
0124A |
Adm sarscv2 bvl 30mcg/.3ml a | 32 | 32 | $43 | |
91312 |
Sarscov2 vac bvl 30mcg/0.3ml | 31 | 31 | $0 | |
G0008 |
Administration of influenza virus vaccine | 31 | 30 | $32 | |
G0009 |
Administration of pneumococcal vaccine | 31 | 31 | $32 | |
90662 |
Influenza vaccine split virus, preservative free | 29 | 28 | $72 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 21 | 18 | $16 |
In context: peer comparison
Among 487 peers in Chicago Internal Medicine Physician, average services per provider: 168. This provider delivers 4.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,115
Patients
326
Total drug cost
$56,499
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 213 | 64 | $4,388 |
| Losartan Potassium | Generic | 131 | 36 | $1,737 |
| Amlodipine Besylate | Generic | 119 | 39 | $1,455 |
| Rosuvastatin Calcium | Generic | 89 | 31 | $2,250 |
| Hydrochlorothiazide | Generic | 86 | 29 | $585 |
| Pravastatin Sodium | Generic | 86 | 24 | $1,702 |
| Metoprolol Succinate | Generic | 78 | 23 | $1,481 |
| Tamsulosin Hcl | Generic | 59 | 18 | $1,594 |
| Metformin Hcl | Generic | 46 | 14 | $487 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 40 | 13 | $597 |
Hospital affiliations
Frequently asked questions
What is Dr. Jah-Won Koo's medical specialty?
Dr. Jah-Won Koo practices Internal Medicine Physician in Chicago, IL.
Where does Dr. Jah-Won Koo practice?
Dr. Jah-Won Koo practices at 1700 W van Buren St, Chicago, IL 606123218. Office phone: 3125632875.
What is Dr. Jah-Won Koo's NPI?
Dr. Jah-Won Koo's National Provider Identifier (NPI) is 1235241837, issued by NPPES.
Does Dr. Jah-Won Koo accept Medicare assignment?
Yes. Dr. Jah-Won Koo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jah-Won Koo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.