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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Lin, M.D.

Critical Care Medicine (Internal Medicine) Physician in Valencia, CA · enumerated 2006.

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

National Provider Identifier

1972558138

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Registry record

Entity type Individual (Type 1)
Name Dr. John Lin
Credential M.D.
Sex Male
Practice address 27055 Island Rd, Valencia, CA, 91355
Phone (310) 623-0020
Fax (661) 670-0393
Enumeration date May 24, 2006
Last updated in NPPES Jan 4, 2011

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A82618 (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
00A826180 Other CA BLUE SHIELD
A82618 Other CA BLUE CROSS
00A826180 Medicaid CA -
00A826180 Other CA CALOPTIMA

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for John Lin?
The National Provider Identifier (NPI) for John Lin is 1972558138, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Lin practice?
The practice location on file with NPPES is in Valencia, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-04.