Doctor profile · Federal record
Dr. David Onsager
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (CMS: Cardiac Surgery) · Chicago, IL
- NPI 1396829156
- Accepts Medicare
- MIPS 87.7 / 100 · 2023
- 38 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
- October 2006 — 20 yrs on file
- Profile last updated
- October 24, 2022
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 208G00000X — NUCC code
- State license (1)
- Illinois #036093456
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1396829156. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
15
Distinct HCPCS
1
Medicare allowed
$7,709
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
33533 |
Coronary artery bypass using artery graft, 1 graft | 15 | 15 | $514 |
In context: peer comparison
Among 23 peers in Chicago Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician, average services per provider: 29. This provider delivers 0.5× the peer median.Open Payments
Industry payments received
All-time total
$250
Transactions
9
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Edwards Lifesciences Corporation | 4 | $106.48 | |
| Medtronic, INC. | 4 | $94.21 | |
| Abiomed | 1 | $49.76 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. David Onsager's medical specialty?
Dr. David Onsager practices Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Chicago, IL.
Where does Dr. David Onsager practice?
Dr. David Onsager practices at 5841 S Maryland Ave, Chicago, IL 606371443. Office phone: 8888240200.
What is Dr. David Onsager's NPI?
Dr. David Onsager's National Provider Identifier (NPI) is 1396829156, issued by NPPES.
Does Dr. David Onsager accept Medicare assignment?
Yes. Dr. David Onsager accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Onsager commonly perform?
Top Medicare-reported procedures in 2023: Coronary artery bypass using artery graft, 1 graft (HCPCS 33533). Source: CMS Medicare Physician & Other Practitioners file.