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

Dr. Cassandra Lee Riddle, DO

Surgery Physician in Tulsa, OK · enumerated 2018.

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

National Provider Identifier

1679074132

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Registry record

Entity type Individual (Type 1)
Name Dr. Cassandra Lee Riddle
Credential DO
Sex Female
Practice address Tulsa, OK, 74133
Phone (918) 930-7312
Fax (918) 307-3121
Enumeration date Feb 21, 2018
Last updated in NPPES Dec 19, 2023

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 6637 (OK) Primary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 6637 (OK) Secondary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
200874640A Medicaid OK -

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

What is the NPI number for Cassandra Riddle?
The National Provider Identifier (NPI) for Cassandra Riddle is 1679074132, a Type 1 (individual) record in the CMS NPPES registry.
Where does Cassandra Riddle practice?
The practice location on file with NPPES is in Tulsa, OK. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-19.