Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Chiaven Phen, DDS

Dentist in Hayward, CA · enumerated 2006.

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

National Provider Identifier

1538259395

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Registry record

Entity type Individual (Type 1)

Name Chiaven Phen

Credential DDS

Sex Female

Practice address 22331 Mission Blvd, Hayward, CA, 94541

Phone (510) 471-5907

Enumeration date Oct 13, 2006

Last updated in NPPES Sep 16, 2016

Taxonomy & licenses

122300000X Dentist Dental Providers · License 51519 (CA) Primary

1223G0001X General Practice Dentistry Dental Providers · License 4847 (NV) Secondary

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

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.

What specialty is Chiaven Phen?

Chiaven Phen 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.

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Melissa Rose Pediatrics Physician · Hayward, CA NPI 1053339606 Louanne Giangreco Emergency Medicine Physician · Hayward, CA NPI 1740390574 Michael Miller Gynecology Physician · Hayward, CA NPI 1861576043 Glenda Lovell Internal Medicine Physician · Hayward, CA NPI 1821173584 Olga Kashlinskaya Pediatric Adolescent Medicine Physician · Hayward, CA NPI 1932284650 Carl Gray Family Medicine Physician · Hayward, CA NPI 1326126152 Sridevi Ponnala Public Health Dentistry · Hayward, CA NPI 1841365863 Joyce Gunawan General Practice Dentistry · Hayward, CA NPI 1588732648

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-16.