NPI Portal NPI Lookup & Verification

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

Cassandra R Olson Williams, D.O.

Sports Medicine (Family Medicine) Physician in Usaf Academy, CO · enumerated 2017 · practices at 10th Medgrp-Academy.

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

National Provider Identifier

1235661851

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Cassandra R Olson Williams
Credential D.O.
Sex Female
Practice address Usaf Academy, CO, 80840
Phone (719) 333-5020
Fax (719) 333-1249
Enumeration date Apr 2, 2017
Last updated in NPPES Apr 22, 2026

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

Taxonomy & licenses

207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License T0588 (TX) Primary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care 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

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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Cassandra Olson Williams?
Cassandra Olson Williams is registered in NPPES with the primary taxonomy of Sports Medicine (Family Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-22.