Mr. Collins Joseph Sullivan, D.D.S.

Mr. Collins Joseph Sullivan is a General Practice Dentistry provider (Dentist) practicing in Oxnard, CA, registered in the NPPES registry with NPI 1649321522 since 2007. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1649321522
Entity type	Individual (Type 1)
Name	Mr. Collins Joseph Sullivan
Credential	D.D.S.
Sex	Male
Practice address	Oxnard, CA, 93030
Phone	8054870435
Fax	8054872119
Enumeration date	2007-01-16
Last updated in NPPES	2007-07-08

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	033384	CA

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
033384	Other	CA	STATE LICENSE

Copy-ready billing details

Provider: Collins Sullivan, D.D.S.
NPI: 1649321522
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: Oxnard, CA, 93030

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1306239702	Alan Lavian	Individual	General Practice Dentistry	Oxnard, CA

Verify this record

Cross-check NPI 1649321522 against the authoritative CMS record: view Mr. Collins Joseph Sullivan on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What is the NPI number for Collins Sullivan?

The National Provider Identifier (NPI) for Collins Sullivan is 1649321522, a Type 1 (individual) record in the CMS NPPES registry.

Where does Collins Sullivan practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.