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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Tina Siu, DDS

Orthodontics and Dentofacial Orthopedics Dentistry in San Marino, CA · enumerated 2013 · practices at Daniel W. Chee, DDS, Apc.

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

National Provider Identifier

1013350602

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Registry record

Entity type Individual (Type 1)
Name Dr. Tina Siu
Credential DDS
Sex Female
Practice address San Marino, CA, 91108
Phone (626) 796-0615
Enumeration date Apr 12, 2013
Last updated in NPPES Apr 12, 2013

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

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 034421 (CA) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

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Frequently asked questions

What specialty is Tina Siu?
Tina Siu 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-12.