1. Home
  2. Directory
  3. Illinois
  4. Barrington
  5. Internal Medicine
  6. NPI Profile

RANDALL EARL WILLIAMS MD
NPI 1720030646
Internal Medicine - Cardiovascular Disease in Barrington, IL

Active since May 17, 2006
27750 W HIGHWAY 22, SUITE 240, BARRINGTON, IL 60010(847) 829-1600 Get Directions Write a Review

NPPES record last updated: July 18, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Randall Earl Williams Md NPPES

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

RANDALL EARL WILLIAMS MD (NPI 1720030646) is an individual cardiovascular disease provider in Barrington, Illinois, licensed in Illinois (036091021) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1720030646
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameRANDALL EARL WILLIAMSCredential: MD
Location Address27750 W HIGHWAY 22, SUITE 240Barrington, IL 60010-2379
Mailing Address1919 S Highland Ave, Suite B202 Attn Jan LewisLombard, IL 60148-6153 · (630) 268-1102
Phone(847) 829-1600
Sole ProprietorNo
Enumeration DateMay 17, 2006
Last NPPES UpdateJuly 18, 2008
✔ NPI 1720030646 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in IL · 036091021
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.
27750 W HIGHWAY 22, Barrington, IL 60010
Open in Google Maps ↗

Other Identifiers 6

OtherP00166673Railroad Medicare
Medicare UPINE62606
Medicaid036091021IL
Medicare ID-Type UnspecifiedK03490IL · Local 99
Medicare PINK03491IL
Medicare ID-Type UnspecifiedK03489IL · Local 16

Other Providers at the Same Location NPPES 12

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

DR. MICHAEL B SOBLE M.D.
Internal Medicine (Medical Oncology)
27750 W HIGHWAY 22, SUITE G80
BARRINGTON, IL 60010
Cook County (847) 842-0850
DR. DONALD F CRONIN MD
Internal Medicine (Nephrology)
27750 W HIGHWAY 22, SUITE 120
BARRINGTON, IL 60010
Cook County (847) 655-7264
RANDY ZIMMERMAN M.D.,P.C.
Obstetrics & Gynecology
27750 W HIGHWAY 22, SUITE 120
BARRINGTON, IL 60010
Cook County (847) 277-0500
THOMAS MICHAEL LESKOVAC MD
Internal Medicine (Cardiovascular Disease)
27750 W HIGHWAY 22, SUITE 240
BARRINGTON, IL 60010
Cook County (847) 829-1600
RANDY RAY ZIMMERMAN MD
Obstetrics & Gynecology
27750 W HIGHWAY 22, STE 120
BARRINGTON, IL 60010
Cook County (847) 277-0500
MINHAJ MUSA M.D.
Internal Medicine
27750 W HIGHWAY 22
BARRINGTON, IL 60010
Cook County (847) 381-5800
DR. SENG M LEONG MD
Internal Medicine
27750 W HIGHWAY 22
BARRINGTON, IL 60010
Cook County (847) 381-5800
DR. TIMOTHY VALE VOTAPKA M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
27750 W HIGHWAY 22, SUITE 100
BARRINGTON, IL 60010
Cook County (847) 816-3000

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 Randall Williams's NPI number?

The NPI number for Randall Williams is 1720030646. It was assigned to this individual provider in the NPPES registry on May 17, 2006.

Where is Randall Williams located?

Randall Williams practices at 27750 W Highway 22 Suite 240, Barrington, IL 60010. The listed phone number is (847) 829-1600.

What is Randall Williams'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 Randall Williams was last updated on July 18, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.