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Edit this profileWhere to find Mark Chwajol, M.D.
- Chicago location main office
1740 W Taylor St, Chicago, IL 60612 - Janesville location
1000 Mineral Point Ave, Janesville, WI 53548 - Freeport location
1045 W Stephenson St, Freeport, IL 61032 - Crystal Lake location
875 S Route 31, Crystal Lake, IL 60014 - Lake Geneva location
N2950 State Road 67, Lake Geneva, WI 53147
About Dr. Chwajol
Based in Chicago, IL, Mark Chwajol, M.D. is listed in the NPI registry under neurological surgery. Mark graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2010. According to Medicare claims data, Mark cared for 61 Medicare patients across 65 services. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1356575690 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (886) 600-2273
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1740 W TAYLOR ST
Chicago, IL 60612
1000 Mineral Point Ave
Janesville, WI 53548
1045 W Stephenson St
Freeport, IL 61032
875 S Route 31
Crystal Lake, IL 60014
N2950 State Road 67
Lake Geneva, WI 53147
Conditions Commonly Evaluated or Treated
Within Neurological Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Brain & spine conditions
Brain conditions
Brain disorders
- Acoustic Neuroma
- Brain Vascular Malformation
- Chiari Malformation
- Drug-Resistant Seizures
- Epidermoid cyst
- Hemorrhagic stroke
- Meningitis
- Normal Pressure Hydrocephalus
- Papilledema
- Pituitary Tumor
Brain injury
Brain tumors
Movement disorders
Nerve disorders
- Carpal tunnel
- Cubital tunnel syndrome
- Cut Or Injured Nerve
- Face Twitching
- Occipital neuralgia
- Outer thigh burning and numbness
- Thoracic outlet syndrome
- Trigeminal neuralgia
Pain
Pediatric conditions
Spine & back
- Arthritis of the spine
- Chronic back pain
- Chronic Neck Pain
- Degenerative disc disease
- Failed back surgery syndrome
- Severe back pain
- Spinal Cord Tumor
- Spondylolisthesis
- Tethered Spinal Cord
Spine conditions
- Bone Spurs In The Spine
- Fluid Cyst In Spinal Cord
- Spinal compression fracture
- Spine Infection
- Stress Fracture Of The Spine
Spine deformity
Trauma & injury
Procedures & services
Nerves & spine
Most searched procedures
Brain & spine surgery
Brain procedures
- Awake Brain Mapping Surgery
- Brain Shunt Placement
- Chiari Decompression Surgery
- Deep Brain Stimulation
- Draining A Brain Bleed
- Facial Nerve Decompression Surgery
- Laser Brain Surgery
- Minimally Invasive Endoscopic Brain Surgery
- Needle Brain Biopsy
Brain surgery
Cranial reconstruction
Diagnostic & therapeutic
Endovascular procedures
Functional neurosurgery
Monitoring & trauma
Nerve procedures
Nerve surgery
Pain procedures
- Epidural steroid injection
- Facet Joint Injections
- Pain pump implant
- Radiofrequency ablation
- Spinal cord stimulator implant
Pediatric neurosurgery
Radiation & radiosurgery
Radiation surgery
Skull base surgery
Spasticity treatment
Spine procedures
- Artificial Disc Replacement
- Kyphoplasty
- Nerve Opening Widening
- Scoliosis correction surgery
- SI Joint Fusion
- Spinal Cyst Removal
- Tethered Cord Release
- Vertebra Removal Surgery
Spine surgery
- Minimally Invasive Spine Surgery
- Neck Canal Enlargement Surgery
- Spinal Cord Tumor Removal
- Vertebroplasty
Vascular neurosurgery
Procedures Most Often Billed to Medicare
65 services · 61 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
27 | As often as other peers in Neurological Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
23 | Less often than most peers in Neurological Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
15 | Less often than most peers in Neurological Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other neurosurgeons in Chicago 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Other providers in the same specialty who trained at the same institution.
Class of 2010 at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Mark Chwajol?
Mark Chwajol is a neurosurgeon in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurological Surgery”.
NPI registry
What is Mark Chwajol's address?
Mark Chwajol is listed at 1740 W Taylor St, Chicago, IL 60612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mark Chwajol?
The number on file is (886) 600-2273. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark Chwajol's NPI number?
Mark Chwajol's National Provider Identifier is 1356575690. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Mark Chwajol train?
Mark Chwajol attended University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb), graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark Chwajol been practicing?
Mark Chwajol has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mark Chwajol perform?
According to Medicare billing data, Mark Chwajol the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark Chwajol confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark Chwajol. If this is you, claiming it is free.
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