Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. James Steven Marks, MD

Individual provider Psychiatry Physician · NPI 1841305018

Dr. James Steven Marks, MD is a Neuropsychiatry in Vernon Hills, Illinois. Qualified in 1988, 38 years ago. Practices with Neuropsychiatric Associates of Il SC, a 5-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
38
Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

977 Lakeview Pkwy Ste 170
Vernon Hills, IL 60061-1400
Phone: (847) 367-1611
Fax: (847) 367-4079
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 977 Lakeview Pkwy Ste 190, Vernon Hills, IL 60061-1429 — (847) 592-4447

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 036-080975 (IL)

Record details

NPI number1841305018
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 20, 2006
Last updated in NPPESOctober 21, 2025
Certification dateOctober 21, 2025
Mailing address977 Lakeview Pkwy, Suite 170, Vernon Hills, IL 60061-1400

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROPSYCHIATRY
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Group practice Neuropsychiatric Associates Of Il Sc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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