Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert Sidney Simpson, DC

Chiropractor in Ada, OK · enumerated 2006 · practices at Simpson Family Clinic.

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

National Provider Identifier

1174600951

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Sidney Simpson

Credential DC

Sex Male

Practice address 217 N Mississippi Ave, Ada, OK, 74820

Phone (580) 332-2332

Fax (580) 332-5593

Enumeration date Nov 1, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 3482 (OK) 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.

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Frequently asked questions

Where does Robert Simpson practice?

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

What is the NPI number for Robert Simpson?

The National Provider Identifier (NPI) for Robert Simpson is 1174600951, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Simpson Family Clinic Chiropractor · Ada, OK NPI 1588858948

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