Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James William Sislow, D.D.S.

Orthodontics and Dentofacial Orthopedics Dentistry in Hoffman Estates, IL · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1255403127

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. James William Sislow

Credential D.D.S.

Sex Male

Practice address 990 Grand Canyon Pkwy, Suite 117, Hoffman Estates, IL, 60194

Phone (847) 843-8410

Fax (847) 843-9184

Enumeration date Nov 15, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

122300000X Dentist Dental Providers · License 30290 (CA) Secondary

122300000X Dentist Dental Providers Secondary

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1255403127 active?

Yes, as of the latest NPPES snapshot, NPI 1255403127 is active (record last updated 2025-09-11).

How do I verify James Sislow's NPI record?

Cross-check NPI 1255403127 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Kimberly Sheppard Periodontics · Hoffman Estates, IL NPI 1811983463

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.