Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Xuelin Li, M.D.

Internal Medicine Physician in Davis, CA · enumerated 2017.

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

National Provider Identifier

1235665589

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Registry record

Entity type Individual (Type 1)

Name John Xuelin Li

Credential M.D.

Sex Male

Practice address 684 Hutchison Dr, Davis, CA, 95616

Phone (530) 297-2330

Fax (210) 479-2010

Enumeration date May 5, 2017

Last updated in NPPES Sep 5, 2023

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A187640 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A187640 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1235665589 active?

Yes, as of the latest NPPES snapshot, NPI 1235665589 is active (record last updated 2023-09-05).

How do I verify John Li's NPI record?

Cross-check NPI 1235665589 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-05.