Doctor profile · Federal record
Dr. Sean Williams, M.D.
Emergency Medicine Physician · Chicago, IL
- NPI 1255712626
- 11 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
5645 W Addison St, Dept of Emergency Medicine
Chicago, IL 606344403
(773) 794-8383
fax (773) 794-4686 - Additional location
-
7435 W Talcott Ave
Chicago, IL 606313707
(773) 774-8000
Credentials & registration
- NPI registered
- June 2015 — 11 yrs on file
- Profile last updated
- March 18, 2021
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Illinois #036144052
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1255712626. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
37
Distinct HCPCS
2
Medicare allowed
$4,447
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 23 | 23 | $189 | |
93042 |
Electrocardiogram (ecg) 1 to 3 leads with review by physician only | 14 | 14 | $7 |
In context: peer comparison
Among 334 peers in this city , average services per provider: 87. This provider delivers 0.4× the peer median.Frequently asked questions
What is Dr. Sean Williams's medical specialty?
Dr. Sean Williams practices Emergency Medicine Physician in Chicago, IL.
Where does Dr. Sean Williams practice?
Dr. Sean Williams practices at 5645 W Addison St, Chicago, IL 606344403. Office phone: 7737948383.
What is Dr. Sean Williams's NPI?
Dr. Sean Williams's National Provider Identifier (NPI) is 1255712626, issued by NPPES.
What procedures does Dr. Sean Williams commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Electrocardiogram (ecg) 1 to 3 leads with review by physician only (HCPCS 93042). Source: CMS Medicare Physician & Other Practitioners file.