NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Spinosa, DMD

Orthodontics and Dentofacial Orthopedics Dentistry in Upland, CA · enumerated 2007 · practices at Dr Gray Orthodontic Specialists.

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

National Provider Identifier

1487868428

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Thomas Spinosa
Credential DMD
Sex Male
Practice address 436 N Mountain Ave, Upland, CA, 91786
Phone (909) 260-2330
Enumeration date May 9, 2007
Last updated in NPPES Jul 3, 2012

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License DV034421 (CA) Primary
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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 specialty is Thomas Spinosa?
Thomas Spinosa is registered in NPPES with the primary taxonomy of Orthodontics and Dentofacial Orthopedics 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-03.