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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOHN TIMOTHY WALKUP M.D.
NPI 1831125772
Psychiatry & Neurology - Psychiatry in Chicago, IL

Active since June 23, 2006
225 E CHICAGO AVE, CHICAGO, IL 60611(800) 543-7362 Get Directions Write a Review

NPPES record last updated: October 6, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About John Timothy Walkup M.d. NPPES

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

JOHN TIMOTHY WALKUP M.D. (NPI 1831125772) is an individual psychiatry provider in Chicago, Illinois, licensed in Illinois (036144320) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1831125772
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameJOHN TIMOTHY WALKUPCredential: M.D.
Location Address225 E CHICAGO AVEChicago, IL 60611-2991
Mailing Address225 E Chicago AveChicago, IL 60611-2991 · (312) 227-4000
Phone(800) 543-7362
Sole ProprietorNo
Enumeration DateJune 23, 2006
Last NPPES UpdateOctober 6, 2026
NPPES CertifiedOctober 6, 2026
✔ NPI 1831125772 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 · 036144320
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.
225 E CHICAGO AVE, Chicago, IL 60611
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Other Identifiers 1

Medicaid036144320IL

Other Providers at the Same Location NPPES 20

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

BESSEY ELIZABETH JOSE GEEVARGHESE DO
Pediatrics
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (630) 933-6631
CHRISTINA SOOJIN KIM M.D.
Pediatrics
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (443) 928-7458
JESSICA LAUREN OFFENBACH APN
Nurse Practitioner (Pediatrics)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
MS. JENNY KO LEE APN
Nurse Practitioner (Neonatal)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (847) 962-6268
ERIN COHEN MD
Pediatrics (Hospice and Palliative Medicine)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
DR. JOSEPH HART COLLINS MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-3550
ALEXIS LYN HARMON
Student in an Organized Health Care Education/Training Program
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
SHANNON JULIA CONWAY MD
Student in an Organized Health Care Education/Training Program
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000

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 John Walkup's NPI number?

The NPI number for John Walkup is 1831125772. It was assigned to this individual provider in the NPPES registry on June 23, 2006.

Where is John Walkup located?

John Walkup practices at 225 E Chicago Ave, Chicago, IL 60611. The listed phone number is (800) 543-7362.

What is John Walkup'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 John Walkup was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days 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.