Doctor profile · Federal record
Dr. Stephen Kwak, DO
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Internal Medicine Physician · Diagnostic Radiology Physician · Lake Forest, IL
- NPI 1831517580
- Accepts Medicare
- MIPS 91.3 / 100 · 2023
- 12 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
1000 N Westmoreland RD
Lake Forest, IL 600451658
(847) 234-5600
fax (847) 535-7847 - Additional location
-
200 Lothrop St
Pittsburgh, PA 152132582
(412) 648-6062 - Additional location
-
1900 W. Harrison St., Dept of Radiology
Chicago, IL 60612
(312) 864-3826
Credentials & registration
- NPI registered
- March 2014 — 12 yrs on file
- Profile last updated
- September 24, 2020
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State licenses (3)
- Illinois #036152630 · Pennsylvania #OT016043 · Illinois #125066173
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831517580. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,663
Distinct HCPCS
10
Medicare allowed
$157,466
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
71045 |
X-ray of chest, 1 view | 302 | 287 | $9 | |
74177 |
Ct scan of abdomen and pelvis with contrast | 208 | 201 | $91 | |
71046 |
X-ray of chest, 2 views | 196 | 193 | $11 | |
71250 |
Ct scan of chest without contrast | 178 | 172 | $54 | |
71250 |
Ct scan of chest without contrast | 171 | 164 | $53 | |
70450 |
Ct scan head or brain without contrast | 164 | 159 | $41 | |
71046 |
X-ray of chest, 2 views | 135 | 133 | $11 | |
78815 |
Nuclear medicine study from skull base to mid-thigh with ct scan | 115 | 108 | $117 | |
74176 |
Ct scan of abdomen and pelvis without contrast | 112 | 112 | $87 | |
77080 |
Dxa bone density measurement of hip, pelvis, spine | 105 | 105 | $10 |
In context: peer comparison
Among 4 peers in Lake Forest Diagnostic Radiology Physician, average services per provider: 55. This provider delivers 67× the peer median.Frequently asked questions
What is Dr. Stephen Kwak's medical specialty?
Dr. Stephen Kwak practices Diagnostic Radiology Physician in Lake Forest, IL.
Where does Dr. Stephen Kwak practice?
Dr. Stephen Kwak practices at 1000 N Westmoreland RD, Lake Forest, IL 600451658. Office phone: 8472345600.
What is Dr. Stephen Kwak's NPI?
Dr. Stephen Kwak's National Provider Identifier (NPI) is 1831517580, issued by NPPES.
Does Dr. Stephen Kwak accept Medicare assignment?
Yes. Dr. Stephen Kwak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Kwak commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 1 view (HCPCS 71045); Ct scan of abdomen and pelvis with contrast (HCPCS 74177); X-ray of chest, 2 views (HCPCS 71046). Source: CMS Medicare Physician & Other Practitioners file.