Physician Profile
Steven M. Zak, MD
Unclaimed ProfileAbout Dr. Zak
Steven M. Zak, MD is a healthcare provider in Northbrook, IL specializing in neurology. Steven trained at Northwestern University Feinberg Medical School, graduating in 1981. Medicare claims data shows Steven provided 2,184 services to 1,592 patients. The services billed most often include continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure), placement of skin electrodes and measurement of stimulated sites on arms and legs, and needle measurement of electrical activity in arm or leg muscles, 2 extremities.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (847) 564-1870
- Email not available
Practice Locations
1403 KINGSPORT CT
Northbrook, IL 60062
Conditions Commonly Evaluated or Treated
Within Neurology 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
- Alzheimer's disease
- Epilepsy
- Migraines
- Multiple sclerosis
- Neuropathy
- Parkinson's disease
Headache and facial pain
- Tension headaches
- Trigeminal neuralgia
Memory and cognition
- Mild cognitive impairment
Movement disorders
- Essential tremor
- Huntington's disease
- Restless legs syndrome
Neuromuscular and peripheral nerve
- Amyotrophic lateral sclerosis
- Carpal tunnel
- Diabetic neuropathy
- Guillain-Barré syndrome
- Muscular dystrophy
- Myasthenia gravis
Seizures and epilepsy
- Functional seizures
Stroke and vascular
- Brain aneurysm
- Transient ischemic attack
Brain & Spine
- Severe back pain
Brain tumors
- Brain Tumor Symptoms
Head & Facial Pain
- Cluster Headaches
Memory & Cognitive
- Normal Pressure Hydrocephalus
Movement Disorders
- Balance Problems and Ataxia
- Stiff neck
- Stiff Person Syndrome
- Tourette Syndrome and Tics
Nerve Compression
- Sciatica
Sleep & Movement
- Narcolepsy
Spine and nerve
- Cervical radiculopathy
Spine, brain injury, and functional
- Bell's palsy
- Concussion
Procedures & services
Most searched procedures
- Botox for migraines
- EEG
- EMG
- Nerve block
- Sleep study
Consultation and testing
- Ambulatory EEG
- Evoked-potential testing
- Nerve-conduction studies
Consultations & Exams
- Neurological Second Opinion
- Spasticity Assessment and Treatment
- Stroke Risk Evaluation
Consultations and exams
- Neurological Exam and Consultation
Device management
- Deep Brain Stimulation Adjustment
- Responsive Neurostimulator Programming
Diagnostic Testing
- Cognitive and memory screening
- Genetic Testing for Neurological Disorders
- Neuromuscular Ultrasound
- Neuropsychological Testing
- Normal Pressure Hydrocephalus Tap Test
- Tilt Table Test
Infusion and medical therapies
- Neurology Infusion Therapy
Infusions & Therapies
- IVIG Infusion Therapy
- Migraine Preventive Injections and Infusions
- MS Disease-Modifying Infusion Therapy
- Plasmapheresis
Injections & Pain Relief
- Botox Injections for Excessive Drooling
- Botox Injections for Muscle Spasms and Dystonia
- Trigger Point Injections
Medication Management
- Seizure Medication Management
Neuromodulation
- Baclofen Pump Programming and Refills
- Vagus nerve stimulation management
Office procedures
- Lumbar puncture
- Occipital nerve block
Trauma & Injury
- Concussion Evaluation and Baseline Testing
- Concussion Return-to-Play Clearance
Procedures Most Often Billed to Medicare
2,184 services · 1,592 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Placement of skin electrodes and measurement of stimulated sites on arms and legs | Treatment | 95938 |
520 | More often than most peers in Neurology |
| Needle measurement of electrical activity in arm or leg muscles, 2 extremities | Treatment | 95861 |
344 | More often than most peers in Neurology |
| Placement of skin electrodes and measurement of central motor stimulation in arms and legs | Treatment | 95939 |
265 | More often than most peers in Neurology |
| Needle measurement of electrical activity in arm, leg, trunk or head muscles, limited study | Treatment | 95870 |
205 | More often than most peers in Neurology |
| Measurement of brain wave activity (eeg) outside the brain during surgery | Treatment | 95955 |
25 | Less often than most peers in Neurology |
| Measurement of brain wave activity (eeg), in coma or asleep | Treatment | 95822 |
12 | Less often than most peers in Neurology |
| Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) | Billing code | G0453 |
813 | As often as other peers in Neurology |
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.
Other neurologists in Northbrook 3
Same specialty, same city.
Trained at Northwestern University Feinberg Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at Northwestern University Feinberg Medical School 6
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Placement of skin electrodes and measurement of stimulated sites on arms and legs 8
Providers in IL who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Zak?
Dr. Zak is a neurologist in Northbrook, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurology”.
NPI registry
What is Dr. Zak's address?
Dr. Zak is listed at 1403 Kingsport CT, Northbrook, IL 60062. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Zak?
The number on file is (847) 564-1870. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Zak?
Dr. Zak's National Provider Identifier is 1861467755. 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 Dr. Zak train?
Dr. Zak attended Northwestern University Feinberg Medical School, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Zak have?
Dr. Zak has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Zak perform?
According to Medicare billing data, Dr. Zak provides treatments such as placement of skin electrodes and measurement of stimulated sites on arms and legs and needle measurement of electrical activity in arm or leg muscles, 2 extremities. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Zak's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Zak. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.