1. Home
  2. Directory
  3. Illinois
  4. Chicago
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK T UPTON M.D.
NPI 1114993250
Internal Medicine - Cardiovascular Disease in Chicago, IL

Active since February 28, 2006
233 E ERIE ST, SUITE 412, CHICAGO, IL 60611(312) 573-0973(312) 573-0973 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Mark T Upton M.d. NPPES

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

DR. MARK T UPTON M.D. (NPI 1114993250) is an individual cardiovascular disease provider in Chicago, Illinois and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1114993250
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. MARK T UPTONCredential: M.D.
Location Address233 E ERIE ST, SUITE 412Chicago, IL 60611-2926
Mailing Address1730 Park St, Suite 101Naperville, IL 60563-2688 · (630) 718-0200 · Fax (630) 718-0900
Phone(312) 573-0973
Fax(312) 573-0973
Sole ProprietorNo
Enumeration DateFebruary 28, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1114993250 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
233 E ERIE ST, Chicago, IL 60611
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.

DR. MARILYN SUE JOHNSON PH.D
Psychologist (Clinical)
233 E ERIE ST
CHICAGO, IL 60611
Cook County (312) 337-0374
DR. AISHA KAZI PH.D.
Psychologist (Clinical)
233 E ERIE ST, SUITE 407
CHICAGO, IL 60611
Cook County (305) 804-5842
DR. NANCY BURKE PHD
Psychologist (Clinical)
233 E ERIE ST, SUITE 608
CHICAGO, IL 60611
Cook County (312) 335-0311
GEMA
Prosthetic/Orthotic Supplier
233 E ERIE ST, SUITE 200
CHICAGO, IL 60611
Cook County (312) 787-4400
GLEN SUSSMAN
Specialist (Research Study)
233 E ERIE ST, SUITE 203
CHICAGO, IL 60611
Cook County (312) 988-4500
DR. NEAL CHARLES NEALIS JR. D.D.S.
Dentist (General Practice)
233 E ERIE ST, SUITE #812
CHICAGO, IL 60611
Cook County (312) 266-9487
DANIEL ROSS APN
Nurse Practitioner (Psychiatric/Mental Health)
233 E ERIE ST, SUITE 709
CHICAGO, IL 60611
Cook County (847) 769-2687
HEARING & BALANCE CENTER, P.C.
Clinic/Center (Hearing and Speech)
233 E ERIE ST, SUITE 500
CHICAGO, IL 60611
Cook County (312) 573-2039

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 Upton's NPI number?

The NPI number for Mark Upton is 1114993250. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Where is Mark Upton located?

Mark Upton practices at 233 E Erie St Suite 412, Chicago, IL 60611. The listed phone number is (312) 573-0973.

What is Mark Upton's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

When was this NPI record last updated?

The NPPES record for Mark Upton was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 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.