1. Home
  2. Directory
  3. Illinois
  4. Chicago
  5. Psychiatry Neurology
  6. NPI Profile

JOSEPH THOMAS MASON MD
NPI 1396858296
Psychiatry & Neurology - Psychiatry in Chicago, IL

Active since August 16, 2006
938 W NELSON ST, 3RD FLOOR, CHICAGO, IL 60657(773) 296-3220 Get Directions Write a Review

NPPES record last updated: April 27, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 27, 2021, Aug 12, 2020 (2 updates tracked since 2020).

About Joseph Thomas Mason Md NPPES

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

JOSEPH THOMAS MASON MD (NPI 1396858296) is an individual psychiatry provider in Chicago, Illinois, licensed in Illinois (036065073) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1396858296
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameJOSEPH THOMAS MASONCredential: MD
Location Address938 W NELSON ST, 3RD FLOORChicago, IL 60657-6704
Mailing Address1752 W Roscoe StChicago, IL 60657-1016 · (773) 296-3220
Phone(773) 296-3220
Sole ProprietorYes
Enumeration DateAugust 16, 2006
Last NPPES UpdateApril 27, 20212 updates tracked since enumeration
NPPES CertifiedApril 27, 2021
✔ NPI 1396858296 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in IL · 036065073
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.
Also ListedPsychiatry & Neurology · Child & Adolescent PsychiatryTaxonomy 2084P0804X · License 036-065073 (IL)
938 W NELSON ST, Chicago, IL 60657
Open in Google Maps ↗

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.

IAN ROBERT FIELDING L.C.S.W.
Social Worker (Clinical)
938 W NELSON ST, 3RD FLOOR
CHICAGO, IL 60657
Cook County (773) 296-3220
GLYNN NOELLE FITZER BROWN LCSW
Social Worker (Clinical)
938 W NELSON ST
CHICAGO, IL 60657
Cook County (773) 296-3220
NINA JENNER
Counselor (Professional)
938 W NELSON ST
CHICAGO, IL 60657
Cook County (773) 296-3220
ANGELA CASPER LCSW
Social Worker (Clinical)
938 W NELSON ST
CHICAGO, IL 60657
Cook County (773) 296-3227
DR. ELIZABETH RUTHA PSY.D.
Psychologist (Clinical)
938 W NELSON ST
CHICAGO, IL 60657
Cook County (773) 296-3258
MORTEZA MOHAJER MD
Psychiatry & Neurology (Neurology)
938 W NELSON ST, FIRST FLOOR
CHICAGO, IL 60657
Cook County (773) 883-0200
DAVID DEMETRI KELNER
Psychiatry & Neurology (Psychiatry)
938 W NELSON ST, FIRST FLOOR
CHICAGO, IL 60657
Cook County (773) 883-0200
HAIDARI SHIKARI MD
Psychiatry & Neurology (Psychiatry)
938 W NELSON ST, FIRST FLOOR
CHICAGO, IL 60657
Cook County (773) 883-0200

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 Joseph Mason's NPI number?

The NPI number for Joseph Mason is 1396858296. It was assigned to this individual provider in the NPPES registry on August 16, 2006.

Where is Joseph Mason located?

Joseph Mason practices at 938 W Nelson St 3rd Floor, Chicago, IL 60657. The listed phone number is (773) 296-3220.

What is Joseph Mason'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 Joseph Mason was last updated on April 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.