NPI Portal NPI Lookup & Verification

Robert Sinclair, DDS

Robert Sinclair is a General Practice Dentistry provider (Dentist) practicing in Ridgewood, NJ, registered in the NPPES registry with NPI 1770795338 since 2007. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1770795338
Entity type Individual (Type 1)
Name Robert Sinclair
Credential DDS
Sex Male
Practice address Ridgewood, NJ, 07450
Phone 2014444343
Fax 2014444387
Enumeration date 2007-05-04
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 6447 NJ

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

Copy-ready billing details
Provider: Robert Sinclair, DDS
NPI: 1770795338
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: Ridgewood, NJ, 07450

Other providers at this practice address

NPI Name Type Specialty Location
1417938218 Mary Defranco Individual Podiatrist Ridgewood, NJ
1841397536 Linda Kelly Individual Health Service Psychologist Ridgewood, NJ
1609937846 John Caliso Individual Clinical Psychologist Ridgewood, NJ
1972721934 Judith Koch Individual Psychologist Ridgewood, NJ
1962723973 Keri Kennedy Individual Behavior Analyst Ridgewood, NJ

Verify this record

Cross-check NPI 1770795338 against the authoritative CMS record: view Robert Sinclair 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 Robert Sinclair?
Robert Sinclair is registered in NPPES with the primary taxonomy of General Practice Dentistry. 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.