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DR. MARK CHRISTOPHER WALKER M.D.
NPI 1265561724
Psychiatry & Neurology - Psychiatry in Chicago, IL

Active since March 02, 2007
1 E WACKER DR, SUITE 2100, CHICAGO, IL 60601(312) 908-7878(630) 655-0728 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Mark Christopher Walker M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK CHRISTOPHER WALKER M.D. (NPI 1265561724) is an individual psychiatry provider in Chicago, Illinois, licensed in Illinois (36-063569) and active in the NPI registry since March 2007.

NPPES Registry Identity

NPI1265561724
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. MARK CHRISTOPHER WALKERCredential: M.D.
Location Address1 E WACKER DR, SUITE 2100Chicago, IL 60601-1802
Mailing Address418 N Monroe StHinsdale, IL 60521-3151 · (312) 908-7878 · Fax (630) 655-0728
Phone(312) 908-7878
Fax(630) 655-0728
Sole ProprietorYes
Enumeration DateMarch 2, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1265561724 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in IL · 36-063569
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1 E WACKER DR, Chicago, IL 60601
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Other Identifiers 2

Medicare ID-Type Unspecified944150
Medicare UPINE24596IL

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

WINDY CITY COUNSELING LLC
Counselor (Professional)
1 E WACKER DR, SUITE 630
CHICAGO, IL 60601
Cook County (312) 860-0480
CSG DENTAL II, P.C.
Dentist (General Practice)
1 E WACKER DR, SUITE 400
CHICAGO, IL 60601
Cook County (773) 847-1260
CSG DENTAL III, P.C.
Dentist (General Practice)
1 E WACKER DR, SUITE 400
CHICAGO, IL 60601
Cook County (773) 847-1260
DR. RICHARD P. HARRIS M.D.
Psychiatry & Neurology (Psychiatry)
1 E WACKER DR, SUITE 2100
CHICAGO, IL 60601
Cook County (312) 670-3576
WENDEWESSEN AMDE M.D.
Ophthalmology
1 E WACKER DR, STE. #3150
CHICAGO, IL 60601
Cook County (312) 527-1880
ROACHE & ASSOCIATES
Counselor (Mental Health)
1 E WACKER DR
CHICAGO, IL 60601
Cook County (847) 269-0069
CSG DENTAL I, P.C.
Dentist (General Practice)
1 E WACKER DR, SUITE 400
CHICAGO, IL 60601
Cook County (773) 847-1260
CSG DENTAL VI, P.C.
Dentist (General Practice)
1 E WACKER DR, SUITE 400
CHICAGO, IL 60601
Cook County (773) 847-1260

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Walker's NPI number?

The NPI number for Mark Walker is 1265561724. It was assigned to this individual provider in the NPPES registry on March 2, 2007.

Where is Mark Walker located?

Mark Walker practices at 1 E Wacker Dr Suite 2100, Chicago, IL 60601. The listed phone number is (312) 908-7878.

What is Mark Walker's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Mark Walker was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.