Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William Gustav Flick, D.D.S.

Oral & Maxillofacial Surgery (D.M.D.) in Oak Lawn, IL · enumerated 2006.

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

National Provider Identifier

1871696922

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. William Gustav Flick

Credential D.D.S.

Sex Male

Practice address Oak Lawn, IL, 60453

Phone (708) 425-4300

Fax (708) 425-4310

Enumeration date Sep 6, 2006

Last updated in NPPES Oct 25, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 019.014839 (IL) Secondary

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 137000009 (IL) Secondary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License 137000009 (IL) Secondary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License 021001050 (IL) Primary

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

Other identifiers

Identifier	Type	State	Issuer
0040121107	Other	IL	BLUE CROSS BLUE SHIELD
0091640652	Other	IL	BLUE CROSS BLUE SHIELD
0091640653	Other	IL	BLUE CROSS BLUE SHIELD

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

How do I verify William Flick's NPI record?

Cross-check NPI 1871696922 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1871696922 active?

Yes, as of the latest NPPES snapshot, NPI 1871696922 is active (record last updated 2023-10-25).

Other providers at this practice address

Browse all →

Dennis Morris Oral and Maxillofacial Surgery (Dentist) · Oak Lawn, IL NPI 1265516553 Tom Trikolas General Practice Dentistry · Oak Lawn, IL NPI 1194881474 Janice Lubas Pediatric Dentistry · Oak Lawn, IL NPI 1982738829 Richard Rozich Chiropractor · Oak Lawn, IL NPI 1194943852 Southwest Oral Surgeons,P.C. Oral and Maxillofacial Pathology Dentistry · Oak Lawn, IL NPI 1215123187 Tom Trikolas DDS PC Dentist · Oak Lawn, IL NPI 1427233170 Pediatric Dental Specialists Pediatric Dentistry · Oak Lawn, IL NPI 1801268305

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-25.