John S. Kellogg, M.D., M.S.
Allergy Physician · San Jose, CA
John S. Kellogg, M.D., M.S. is an allergy physician with a practice address in San Jose, California, and NPI 1932149697, issued on Jun 8, 2006. Check the license (California A54166, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John S. Kellogg
- Credential
- M.D., M.S.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- A54166 CA
Self-reported in NPPES; status is on the state search - Practice location
- 130 Bellerose Dr, San Jose, CA 95128
- Phone
- (408) 286-1707
- Enumerated
- Jun 8, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (408) 286-1744
- Medicare enrollment
- Enrolled (PECOS I20060221000525); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 157 in California → Look up another NPI →
Also registered at 130 Bellerose Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Theodore Chu, M.D.Allergy Physician1194765123
- Katharine Nelson, MDAllergy & Immunology Physician1497921811
- Anlin Xu, M.D.Allergy Physician1285681007
Verify John S. Kellogg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A54166Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average allergy physician in 2024
539 Medicare Part D claims for 107 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Ipratropium Bromide61 claims
- Montelukast Sodium44 claims
- Trelegy Ellipta38 claims
- Azelastine Hcl30 claims
- Albuterol Sulfate Hfa24 claims
- Dupixent Syringe24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,134.34
80 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 502 providers of this specialty with any payment received $9,080.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- South Bay Allergy And Asthma Group IncSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John S. Kellogg among 157 allergy physician records in California
John S. Kellogg, M.D., M.S. is one of 157 allergy physician records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 31% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated1993 · median 1992 among the 82 with a school on file
- Record last updated2023 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in California
There are 157 allergy physician records in California.
All 157 in California → Every provider in San Jose → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Theodore Chu, M.D.San Jose, CA 951281194765123
- Alan Heller, M.D.San Jose, CA 951281831204882
- Anlin Xu, M.D.San Jose, CA 951281285681007
- Roxanne Leung, MDSan Jose, CA 951171730235334
- Richika Makol, MDSan Jose, CA 951171770144909
- Jeffrey Balduzzi, M.D.Stockton, CA 952071235405952
- Wallace Carroll, MDModesto, CA 953551003874124
- Melissa ItsaraRichmond, CA 948011417375528
Common questions
What is John S. Kellogg, M.D., M.S.'s NPI number?
John S. Kellogg, M.D., M.S.'s National Provider Identifier (NPI) is 1932149697, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John S. Kellogg, M.D., M.S. located?
The NPPES record lists a practice address at 130 Bellerose Dr, San Jose, CA, 95128. Phone: (408) 286-1707. Providers update this record themselves, so call before visiting.
How can I verify John S. Kellogg, M.D., M.S.'s license?
NPPES lists California license number A54166, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John S. Kellogg, M.D., M.S. prescribe under Medicare Part D?
In 2024, John S. Kellogg, M.D., M.S. had 539 Medicare Part D claims for 107 beneficiaries; the average among allergy physician prescribers was 750. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.