NPI Portal NPI Lookup & Verification

Dr. David Nguyen To, DDS

Dr. David Nguyen To is a Dentist provider (Dentist) practicing in Orange, CA, registered in the NPPES registry with NPI 1962520908 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Arman Kooshyar DDS Inc (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1962520908
Entity type Individual (Type 1)
Name Dr. David Nguyen To
Credential DDS
Sex Male
Practice address Orange, CA, 92867
Phone 7147710058
Fax 7147710158
Enumeration date 2007-03-27
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
122300000X Dentist Primary 52692 CA

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

Copy-ready billing details
Provider: David To, DDS
NPI: 1962520908
Taxonomy: 122300000X (Dentist)
Address: Orange, CA, 92867

Other providers at this practice address

NPI Name Type Specialty Location
1982178919 Arman Kooshyar DDS Inc Organization Dental Clinic/Center Orange, CA

Verify this record

Cross-check NPI 1962520908 against the authoritative CMS record: view Dr. David Nguyen To 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 specialty is David To?
David To is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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