Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David Chia-Ont Khan, MD

Q: What is the NPI number for David Khan?

The National Provider Identifier (NPI) for David Khan is 1649274150, a Type 1 (individual) record in the CMS NPPES registry.

Radiation Oncology Physician in El Segundo, CA · enumerated 2005.

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

National Provider Identifier

1649274150

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Registry record

Entity type Individual (Type 1)

Name David Chia-Ont Khan

Credential MD

Sex Male

Practice address 860 Parkview Drive North, El Segundo, CA, 90245

Phone (310) 414-9990

Fax (310) 943-2703

Enumeration date Jun 13, 2005

Last updated in NPPES Nov 12, 2013

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License A65774 (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
00A657740	Medicaid	CA	-

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 David Khan?

The National Provider Identifier (NPI) for David Khan is 1649274150, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Khan practice?

The practice location on file with NPPES is in El Segundo, 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 2013-11-12.