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Karl Sun, M.D. Inc.

Cardiovascular Disease Physician in San Diego, CA · enumerated 2016 · authorized official Karl Sun, Physician/Owner.

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

National Provider Identifier

1801258843

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Registry record

Entity type Organization (Type 2)
Legal business name Karl Sun, M.D. Inc.
Practice address 5555 Reservoir Drive, Suite 112, San Diego, CA, 92120
Phone (619) 287-7060
Fax (619) 287-7078
Enumeration date Mar 28, 2016
Last updated in NPPES Mar 28, 2016

Taxonomy & classification

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License A68612 (CA) Primary
207UN0901X Nuclear Cardiology Physician Allopathic & Osteopathic Physicians · License A68612 (CA) Secondary

Authorized official

Name Karl Sun
Title Physician/Owner
Phone (619) 287-7060

Other identifiers

Identifier Type State Issuer
00A686120 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.

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Frequently asked questions

Who is the authorized official for Karl Sun, M.D. Inc.?
NPPES lists Karl Sun (Physician/Owner) as the authorized official for this organization.
What is the NPI number for Karl Sun, M.D. Inc.?
The NPI for Karl Sun, M.D. Inc. is 1801258843, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-28.