Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hong Seok Lee, M.D.

Hospitalist Physician in Pasadena, CA · enumerated 2015.

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

National Provider Identifier

1750767273

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Registry record

Entity type Individual (Type 1)

Name Hong Seok Lee

Credential M.D.

Sex Male

Practice address 100 W California Blvd, Pasadena, CA, 91105

Phone (626) 352-1444

Enumeration date Aug 6, 2015

Last updated in NPPES Jul 8, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A143427 (CA) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License A143427 (CA) Primary

174400000X Specialist Other Service Providers Secondary

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
A143427	Other	-	THE MEDICAL BOARD OF CALIFORNIA

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

Where does Hong Seok Lee practice?

The practice location on file with NPPES is in Pasadena, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Hong Seok Lee?

The National Provider Identifier (NPI) for Hong Seok Lee is 1750767273, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-08.