WILLIAM A JOHNSON MD
NPI 1255381307
Internal Medicine in Chicago, IL
About William A Johnson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM A JOHNSON MD (NPI 1255381307) is an individual internal medicine provider in Chicago, Illinois and active in the NPI registry since May 2006.
NPPES Registry Identity
Specialties & Licenses
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 William Johnson's NPI number?
The NPI number for William Johnson is 1255381307. It was assigned to this individual provider in the NPPES registry on May 11, 2006.
Where is William Johnson located?
William Johnson practices at 1701 W Monterey Ave Suite 1, Chicago, IL 60643. The listed phone number is (773) 233-5850.
What is William Johnson's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
When was this NPI record last updated?
The NPPES record for William Johnson was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
