Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Scott Isaacs, ND, DC

Chiropractor in Denver, CO · enumerated 2006.

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

National Provider Identifier

1083725360

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Registry record

Entity type Individual (Type 1)

Name Dr. William Scott Isaacs

Credential ND, DC

Sex Male

Practice address 4101 E Wesley Ave, Suite 11, Denver, CO, 80222

Phone (303) 757-4433

Fax (303) 757-4410

Enumeration date Aug 31, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 5872 (CO) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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

What is the NPI number for William Isaacs?

The National Provider Identifier (NPI) for William Isaacs is 1083725360, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Isaacs practice?

The practice location on file with NPPES is in Denver, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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William Nelson General Practice Dentistry · Denver, CO NPI 1336136605 William Madden General Practice Dentistry · Denver, CO NPI 1235100595 Lawrence Gabler General Practice Dentistry · Denver, CO NPI 1114947249 Columbine Natural Health Centers PC Chiropractor · Denver, CO NPI 1518027952 Aleksandr Lutskiy General Practice Dentistry · Denver, CO NPI 1922264282 John Flanigan General Practice Dentistry · Denver, CO NPI 1578850178 Gabler and Flanigan General Practice Dentistry · Denver, CO NPI 1649514613 John M Flanigan DDS PC General Practice Dentistry · Denver, CO NPI 1912339334

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.