Dr. Thomas Spinosa, DMD

Dr. Thomas Spinosa is a Orthodontics and Dentofacial Orthopedics Dentistry provider (Dentist) practicing in Upland, CA, registered in the NPPES registry with NPI 1487868428 since 2007. The credential DMD stands for Doctor of Medicine in Dentistry. Practices at Dr Gray Orthodontic Specialists (listed at the same practice address in NPPES).

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NPI	1487868428
Entity type	Individual (Type 1)
Name	Dr. Thomas Spinosa
Credential	DMD
Sex	Male
Practice address	436 N MOUNTAIN AVE, Upland, CA, 91786
Phone	9092602330
Enumeration date	2007-05-09
Last updated in NPPES	2012-07-03

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223X0400X	Orthodontics and Dentofacial Orthopedics Dentistry	Primary	DV034421	CA

DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Copy-ready billing details

Provider: Thomas Spinosa, DMD
NPI: 1487868428
Taxonomy: 1223X0400X (Orthodontics and Dentofacial Orthopedics Dentistry)
Address: 436 N MOUNTAIN AVE, Upland, CA, 91786

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1093791238	Joseph Gray	Individual	Orthodontics and Dentofacial Orthopedics Dentistry	Upland, CA
1225865777	Dr Gray Orthodontic Specialists	Organization	Dental Clinic/Center	Upland, CA

Verify this record

Cross-check NPI 1487868428 against the authoritative CMS record: view Dr. Thomas Spinosa 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 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2012-07-03.