Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Cyrus Lin, MD
Psychiatry Physician in Fontana, CA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942944251
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Registry record
Entity type Individual (Type 1)
Name Cyrus Lin
Credential MD
Sex Male
Practice address 17234 Valley Boulevard, Building A, Fontana, CA, 92335
Phone (909) 427-5603
Enumeration date Apr 22, 2022
Last updated in NPPES Jul 4, 2026
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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.
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 Cyrus Lin?
Cyrus Lin is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Jonathan Smith Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1669867115 Heather Martin Del Campo Family Medicine Physician · Fontana, CA NPI 1356790950 Julia Shih Hospitalist Physician · Fontana, CA NPI 1871121517 Sabreena Dhami Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1356084750 Adam Basical Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1780388629 Leon Luong Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1942905328 Nicole Poladian Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1518717966 Meng-Yung Ong Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1023868494
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-04.