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Proton Doctors Professional Corporation

Q: What is the NPI number for Proton Doctors Professional Corporation?

The NPI for Proton Doctors Professional Corporation is 1093240285, a Type 2 (organization) record in the CMS NPPES registry.

Radiation Oncology Physician in San Diego, CA · enumerated 2017 · authorized official Andrew Chang, President.

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

National Provider Identifier

1093240285

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Registry record

Entity type Organization (Type 2)

Legal business name Proton Doctors Professional Corporation

Practice address 9730 Summers Ridge Rd, San Diego, CA, 92121

Phone (858) 549-7400

Enumeration date Apr 25, 2017

Last updated in NPPES Aug 21, 2017

Taxonomy & classification

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Andrew Chang

Title President

Phone (951) 533-4889

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

Who is the authorized official for Proton Doctors Professional Corporation?

NPPES lists Andrew Chang (President) as the authorized official for this organization.

What is the NPI number for Proton Doctors Professional Corporation?

The NPI for Proton Doctors Professional Corporation is 1093240285, 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 2017-08-21.