Doctor profile · Federal record
Dr. Michael O'Connor
Anesthesiology Physician (CMS: Anesthesiology) · Critical Care Medicine (Anesthesiology) Physician · Chicago, IL
- NPI 1083731327
- Accepts Medicare
- MIPS 87.7 / 100 · 2023
- 39 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5841 S Maryland Ave
Chicago, IL 606371443
(888) 824-0200 - Mailing address
-
150 Harvester Dr, Suite 300
Burr Ridge, IL 605275919
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- September 12, 2025
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State license (1)
- Illinois #036078429
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083731327. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
223
Distinct HCPCS
5
Medicare allowed
$28,104
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 115 | 64 | $85 | |
99291 |
Critical care, first 30-74 minutes | 61 | 26 | $231 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 20 | 16 | $54 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 16 | 11 | $127 | |
00731 |
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 11 | 11 | $109 |
In context: peer comparison
Among 212 peers in Chicago Anesthesiology Physician, average services per provider: 66. This provider delivers 3.4× the peer median.Frequently asked questions
What is Dr. Michael O'Connor's medical specialty?
Dr. Michael O'Connor practices Anesthesiology Physician in Chicago, IL.
Where does Dr. Michael O'Connor practice?
Dr. Michael O'Connor practices at 5841 S Maryland Ave, Chicago, IL 606371443. Office phone: 8888240200.
What is Dr. Michael O'Connor's NPI?
Dr. Michael O'Connor's National Provider Identifier (NPI) is 1083731327, issued by NPPES.
Does Dr. Michael O'Connor accept Medicare assignment?
Yes. Dr. Michael O'Connor accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael O'Connor commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Critical care (HCPCS 99291); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.