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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.

GRANT SIMS
NPI 1780672121
Dentist - Prosthodontics in Chicago, IL

Active since October 10, 2005
5333 N CLARK ST, CHICAGO, IL 60640(773) 728-5333(773) 728-7405 Get Directions Write a Review

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

About Grant Sims NPPES

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

GRANT SIMS (NPI 1780672121) is an individual prosthodontics provider in Chicago, Illinois and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1780672121
Entity TypeIndividualMale
Primary Taxonomy1223P0700X
Provider Legal NameGRANT SIMS
Location Address5333 N CLARK STChicago, IL 60640-2121
Mailing Address5333 N Clark StChicago, IL 60640-2121 · (773) 728-5333 · Fax (773) 728-7405
Phone(773) 728-5333
Fax(773) 728-7405
Sole ProprietorNo
Enumeration DateOctober 10, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1780672121 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · ProsthodonticsDental Providers
Taxonomy Code1223P0700X
Definition
That branch of dentistry pertaining to the restoration and maintenance of oral functions, comfort, appearance and health of the patient by the restoration of natural teeth and/or the replacement of missing teeth and contiguous oral and maxillofacial tissues with artificial substitutes.
5333 N CLARK ST, Chicago, IL 60640
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

Other Providers at the Same Location NPPES 7

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

DENTAL CORPORATE USA
Dentist
5333 N CLARK ST
CHICAGO, IL 60640
Cook County (773) 728-5333
SANELA OVNOVIC-HODZIC RDH
Dental Hygienist
5333 N CLARK ST
CHICAGO, IL 60640
Cook County (773) 728-5333
LAWRENCE VELANO
Dentist (General Practice)
5333 N CLARK ST
CHICAGO, IL 60640
Cook County (773) 728-5333
GHASSAN ABBOUD I
Dentist (Prosthodontics)
5333 N CLARK ST
CHICAGO, IL 60640
Cook County (773) 728-5333
GEORGIA HELEN KALKANIS DDS
Dentist (General Practice)
5333 N CLARK ST
CHICAGO, IL 60640
Cook County (773) 728-5333
TAMARA OWEIS DDS
Dentist (Orthodontics and Dentofacial Orthopedics)
5333 N CLARK ST
CHICAGO, IL 60640
Cook County (773) 728-5333
DR. GINU DEVI DAHIYA DMD, MS
Dentist (Orthodontics and Dentofacial Orthopedics)
5333 N CLARK ST
CHICAGO, IL 60640
Cook County (773) 728-5333

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 Grant Sims's NPI number?

The NPI number for Grant Sims is 1780672121. It was assigned to this individual provider in the NPPES registry on October 10, 2005.

Where is Grant Sims located?

Grant Sims practices at 5333 N Clark St, Chicago, IL 60640. The listed phone number is (773) 728-5333.

What is Grant Sims's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Prosthodontics, with taxonomy code 1223P0700X.

What insurance does Grant Sims accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Anthem Blue Cross and Blue Shield and BEST Life and 8 other insurers list Grant Sims as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Grant Sims 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 34 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.