PROTON DOCTORS PROFESSIONAL CORPORATION
NPI 1093240285
Radiology - Radiation Oncology in San Diego, CA
About Proton Doctors Professional Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PROTON DOCTORS PROFESSIONAL CORPORATION (NPI 1093240285) is a healthcare organization registered as a radiation oncology in San Diego, California and active in the NPI registry since April 2017. The organization holds a CLIA Waiver certificate valid through May 6, 2028 and lists Andrew L Chang, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Proton Doctors Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
20Medicare enrollment records show 20 clinicians reassign Medicare billing to Proton Doctors Professional Corporation, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 15 within 10 miles. They are listed nearest first.
Clinicians, nearest first (20)
San Diego, CA 92121
La Jolla, CA 92093
La Jolla, CA 92093
La Jolla, CA 92093
Encinitas, CA 92024
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 05D2148257
Proton Doctors Professional Corporation California Protons · San Diego, CAFrequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Proton Doctors Professional Corporation's NPI number?
The NPI number for Proton Doctors Professional Corporation is 1093240285. It was assigned to this organization in the NPPES registry on April 25, 2017.
Where is Proton Doctors Professional Corporation located?
Proton Doctors Professional Corporation is located at 9730 Summers Ridge Rd, San Diego, CA 92121. The listed phone number is (858) 549-7400.
What is Proton Doctors Professional Corporation's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Proton Doctors Professional Corporation enrolled in Medicare?
Yes. Proton Doctors Professional Corporation is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Proton Doctors Professional Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 20 clinicians, all in Radiation Oncology, reassign their Medicare billing to Proton Doctors Professional Corporation. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 3 practice at this address and 15 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Proton Doctors Professional Corporation hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 05D2148257) is associated with this NPI, valid through May 6, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Proton Doctors Professional Corporation was last updated on August 21, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Proton Doctors Professional Corporation · NPI 1093240285
Radiation Oncology organization in San Diego, California. Organization record, active in the CMS NPPES registry since April 25, 2017.
## Identity
- **NPI:** 1093240285 (Entity type: Organization)
- **Enumerated:** April 25, 2017
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **Organization subpart:** No
- **Authorized official:** Andrew Chang, PRESIDENT
## Practice location
- **Address:** 9730 SUMMERS RIDGE RD, San Diego, CA 92121-3101
- **Phone:** (858) 549-7400
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 20 clinicians (Radiation Oncology) reassign Medicare billing to this organization (form CMS-855R); 3 practice at this address and 15 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 21, 2017
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1093240285) · Data from the CMS NPPES public registry.