Dr. Mark Chwajol , MD
Neurological Surgery • Chicago, IL
Professional Overview & Biography Verified Profile Summary
Dr. Mark Chwajol, MD is a certified Neurological Surgery practicing in Chicago, IL. With approximately 16 years of clinical experience since graduating from University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb) in 2010, Dr. Chwajol delivers high-quality medical care to the local community at 1740 W TAYLOR ST.
Dr. Chwajol is affiliated with Osf Multi-Specialty Group and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.
Frequently performed procedures and clinical services include new patient outpatient office visit, established patient outpatient office visit, initial hospital care with straightforward or low-level medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.
Practice Location & Contact Primary Location
1740 W Taylor St
Chicago, IL 606127232
Medicare Profile & Education
University Of Illinois College Of Med (Chi/peor/rock/chm-Urb)
2010
✓ Accepts Assignment
Telehealth Services Available
Specialty Benchmarks & Practice Insights
Comparative analytics for Neurological Surgery in Chicago, IL
Practicing in Chicago, IL (397 Statewide)
✓ Offers Virtual Consultations
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Clinical Seniority & Experience Comparison
Performed Procedures & Service Volume
Top Medicare Part B procedures performed by this practitioner
| HCPCS Code & Description | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
27 | 27 | $424.00 | $129.34 |
|
99213
Established patient office or other outpatient visit, typically 15 minutes
|
23 | 20 | $208.00 | $63.66 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
15 | 14 | $294.00 | $94.02 |
Medical Specialties & State Licenses
CMS Verified: 2026-06-30NUCC Taxonomy Code: 207T00000X
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
Hospital & Practice Group Affiliations
Osf Multi-Specialty Group
8600 State Route 91, Peoria, IL 616157829
Phone: 3096835050
Secondary Practice Locations
N2950 State Road 67
Lake Geneva, WI 531472655
Phone: 2622450535
1045 W Stephenson St
Freeport, IL 610324864
Phone: 8155996000
1000 Mineral Point Ave
Janesville, WI 535482982
Phone: 6087566868
875 S Route 31
Crystal Lake, IL 600148190
Phone: 7792205500
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Student in an Organized Health Care Education/Training Program
Doctor of Dental Surgery
Student in an Organized Health Care Education/Training Program
Student in an Organized Health Care Education/Training Program
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Registered Nurse
Dentist - Pediatric Dentistry
Doctor of Dental Surgery
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
NPI status registered as active in NPPES database
Registered at 1740 W TAYLOR ST, CHICAGO, IL 606127232 (Tel: 8866002273)
Registered at 1350 N WELLS ST, APT. F 203, CHICAGO, IL 606101936 (Tel: 6466752670)
Recorded as MARK CHWAJOL, M.D.
Neurological Surgery (License #036.123878 in IL)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
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NPI Administrative Meta
Mailing Address
1350 N Wells St, Apt. F 203
Chicago, IL 606101936
Phone: 6466752670
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