NPI Portal NPI Lookup & Verification

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

Ms. Sophie Lin, MD, PHD

Surgery Physician in San Francisco, CA · enumerated 2017.

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

National Provider Identifier

1922543750

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Registry record

Entity type Individual (Type 1)
Name Ms. Sophie Lin
Credential MD, PHD
Sex Female
Practice address San Francisco, CA, 94143
Phone (415) 476-1239
Enumeration date Jan 3, 2017
Last updated in NPPES Jun 26, 2024

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 194364 (CA) Primary
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.

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Frequently asked questions

What is the NPI number for Sophie Lin?
The National Provider Identifier (NPI) for Sophie Lin is 1922543750, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sophie Lin practice?
The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-26.