DR. KENNETH T SHIMIZU M.D.
NPI 1326032129
Radiology - Radiation Oncology in San Diego, CA
About Dr. Kenneth T Shimizu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KENNETH T SHIMIZU M.D. (NPI 1326032129) is an individual radiation oncology provider in San Diego, California, licensed in California (G67647) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Kenneth T Shimizu M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Kenneth Shimizu reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Jolla, CA 92037
- Reassigned Medicare billing, California enrollment
- 1,598 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 clinicians in this Medicare group
Oceanside, CA 92056
- Reassigned Medicare billing, California enrollment
- 24 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 23
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92121 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92121
SAN DIEGO, CA 92121
Frequently 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 Kenneth Shimizu's NPI number?
The NPI number for Kenneth Shimizu is 1326032129. It was assigned to this individual provider in the NPPES registry on September 7, 2005.
Where is Kenneth Shimizu located?
Kenneth Shimizu practices at 10670 John J Hopkins Dr, San Diego, CA 92121. The listed phone number is (858) 554-4100.
What is Kenneth Shimizu's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Kenneth Shimizu enrolled in Medicare?
Yes. Kenneth Shimizu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Kenneth Shimizu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Shimizu reassigns Medicare benefits to 3 organizations: Scripps Health (La Jolla, CA), Emergency And Acute Care Medical Corporation (San Diego, CA) and Dermatologist Medical Group Of North County, Inc (Oceanside, CA). Each 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 Kenneth Shimizu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Kenneth Shimizu was last updated on October 26, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.