JOHN S. KELLOGG M.D., M.S.
NPI 1932149697
Allergy & Immunology - Allergy in San Jose, CA
About John S. Kellogg M.d., M.s. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN S. KELLOGG M.D., M.S. (NPI 1932149697) is an individual allergy provider in San Jose, California, licensed in California (A54166) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
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
John S. Kellogg M.d., M.s. 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 Reassignment
Medicare enrollment records show John Kellogg reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95128
- Reassigned Medicare billing, California enrollment
- 4 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.
Referred Medical Equipment & Supplies CMS DME claims 3
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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN JOSE, CA 95128
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 John Kellogg's NPI number?
The NPI number for John Kellogg is 1932149697. It was assigned to this individual provider in the NPPES registry on June 8, 2006.
Where is John Kellogg located?
John Kellogg practices at 130 Bellerose Dr, San Jose, CA 95128. The listed phone number is (408) 286-1707.
What is John Kellogg's specialty?
The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.
Is John Kellogg enrolled in Medicare?
Yes. John Kellogg 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 organization bills Medicare for John Kellogg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Kellogg reassigns Medicare benefits to South Bay Allergy & Asthma Group Inc (San Jose, CA). The 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 John Kellogg'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 John Kellogg was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.