NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brittany Sullivan, M.D.

Surgical Oncology Physician in Orange, CA · enumerated 2017.

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

National Provider Identifier

1437682804

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Brittany Sullivan
Credential M.D.
Sex Female
Practice address 101 the City Dr S, Orange, CA, 92868
Enumeration date Apr 4, 2017
Last updated in NPPES Aug 18, 2026

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 14301643-1205 (UT) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Brittany Sullivan?
The National Provider Identifier (NPI) for Brittany Sullivan is 1437682804, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brittany Sullivan practice?
The practice location on file with NPPES is in Orange, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-18.