Doctor profile · Federal record
Dr. Mark Chwajol, M.D.
Neurological Surgery Physician (CMS: Neurosurgery) · Chicago, IL
- NPI 1356575690
- Accepts Medicare
- 16 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1740 W Taylor St
Chicago, IL 606127232
(886) 600-2273 - Mailing address
-
1350 N Wells St, Apt. F 203
Chicago, IL 606101936
Credentials & registration
- NPI registered
- May 2009 — 17 yrs on file
- Profile last updated
- October 12, 2016
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207T00000X — NUCC code
- State license (1)
- Illinois #036.123878
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1356575690. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
16
Distinct HCPCS
1
Medicare allowed
$2,084
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99204 |
New patient office or other outpatient visit, 45-59 minutes | 16 | 16 | $130 |
In context: peer comparison
Among 29 peers in Chicago Neurological Surgery Physician, average services per provider: 38. This provider delivers 0.4× the peer median.Open Payments
Industry payments received
All-time total
$685
Transactions
8
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Stryker Corporation | 3 | $385.42 | |
| Alphatec Spine, INC | 1 | $126.03 | |
| Nico Corporation | 1 | $93.60 | |
| Integra LifeSciences Corporation | 2 | $55.82 | |
| Aesculap, INC. | 1 | $24.53 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Mark Chwajol's medical specialty?
Dr. Mark Chwajol practices Neurological Surgery Physician in Chicago, IL.
Where does Dr. Mark Chwajol practice?
Dr. Mark Chwajol practices at 1740 W Taylor St, Chicago, IL 606127232. Office phone: 8866002273.
What is Dr. Mark Chwajol's NPI?
Dr. Mark Chwajol's National Provider Identifier (NPI) is 1356575690, issued by NPPES.
Does Dr. Mark Chwajol accept Medicare assignment?
Yes. Dr. Mark Chwajol accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Chwajol commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.