Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Gonzalo Rafael Ballon-Landa, MD

Individual provider Infectious Disease Physician · NPI 1326266081

Dr. Gonzalo Rafael Ballon-Landa, MD is registered under Infectious Disease in San Diego, California. Graduated from Northwestern University Feinberg Medical School in 1977, 49 years ago. Practices with On Call Specialists Medical Group of San Diego Inc, a 144-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
49
Trained at
Northwestern University Feinberg Medical School
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4136 Bachman Pl
San Diego, CA 92103-2028 Not confirmed with CMS for 19 years — call before visiting
Phone: (619) 238-1443
Fax: (619) 298-6188
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence G41894 (CA)

Record details

NPI number1326266081
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 20, 2007
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1977 (49 years in practice)
Group practice On Call Specialists Medical Group Of San Diego Inc — 144 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients187
Services billed 954 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $23 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Scripps Mercy Hospital Hospital · San Diego, CA

Colleagues at On Call Specialists Medical Group of San Diego Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 144 clinicians in the practice; 12 are shown here.

Other providers in San Diego