GARY L KOBAYASHI M.D.
NPI 1245303353
Internal Medicine in Vista, CA
About Gary L Kobayashi M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GARY L KOBAYASHI M.D. (NPI 1245303353) is an individual internal medicine provider in Vista, California, licensed in California (G58496) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
Gary L Kobayashi M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Gary Kobayashi reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 2,052 clinicians in this Medicare group
Redlands, CA 92373
- Reassigned Medicare billing, California enrollment
- 635 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 228 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 10
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 92083 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 8
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Gary Kobayashi's NPI number?
The NPI number for Gary Kobayashi is 1245303353. It was assigned to this individual provider in the NPPES registry on November 16, 2006.
Where is Gary Kobayashi located?
Gary Kobayashi practices at 145 Thunder Dr, Vista, CA 92083. The listed phone number is (760) 630-5464.
What is Gary Kobayashi's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Gary Kobayashi enrolled in Medicare?
Yes. Gary Kobayashi is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Gary Kobayashi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Kobayashi reassigns Medicare benefits to 3 organizations: Healthcare Partners Affiliates Medical Group (Tustin, CA), Beaver Medical Group P C (Redlands, CA) and Centers For Family Medicine Gp (Los Alamitos, 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 Gary Kobayashi'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 Gary Kobayashi was last updated on February 4, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.