NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Chao-I Lin, MD

Allergy & Immunology Physician in Orange, CA · enumerated 2006 · practices at Allergy Partners of California, Inc..

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

National Provider Identifier

1588779631

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Registry record

Entity type Individual (Type 1)
Name Dr. Chao-I Lin
Credential MD
Sex Male
Practice address 1140 W La Veta Ave Ste 850, Orange, CA, 92868
Phone (714) 771-7994
Fax (714) 744-4167
Enumeration date Aug 20, 2006
Last updated in NPPES Dec 14, 2023

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License A45786 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1588779631 Medicaid CA -
CB207786 Other CA MEDICARE PTAN

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 NPI 1588779631 active?
Yes, as of the latest NPPES snapshot, NPI 1588779631 is active (record last updated 2023-12-14).
How do I verify Chao-I Lin's NPI record?
Cross-check NPI 1588779631 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-14.