About
Dr. Carlos A. Rivas is a board-certified internist and integrative functional medicine physician. D. with honors from Georgetown University School of Medicine. His internal medicine residency at Highland Hospital, the county hospital in Oakland, California, trained him to manage serious and complex illness across a wide spectrum of patients.
Dr. Rivas grew up in San Francisco in a Catholic immigrant family from El Salvador. He speaks English and Spanish fluently. His clinical focus includes metabolic optimization, nutritional medicine, post-viral and long-haul protocols, hormonal health, and chronic disease management. He draws on advanced specialty lab panels to guide each client's care, reviewing every result personally. He believes a physician's first duty is to protect human life from conception through natural death. That conviction shapes both his clinical ethics and his practice. He offers pro bono consultations to traditional Catholic families with financial difficulty. Outside of medicine, Dr. Rivas spends his time with family, enjoying nature walks, reading, storytelling, swimming, and riding bikes.
Education & Training
Medical School
Georgetown University (M.D. with honors)
Residency
Internal Medicine, Highland Hospital, Oakland, California
Certifications
Languages
English, Spanish
Conditions Treated
Who is Dr. Rivas right for?
Dr. Rivas works well with adults dealing with unresolved chronic conditions such as fatigue, brain fog, or metabolic dysfunction. Patients navigating post-viral syndrome, long COVID, or post-vaccine injury will find his protocols specifically tailored to those presentations. He also serves patients with thyroid disorders, adrenal dysfunction, hormonal imbalances, and cardiovascular risk. His bilingual capability makes him a strong fit for Spanish-speaking patients. Clients who want a physician actively engaged in their care, available around the clock, will find his approach well-matched to their needs.
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Frequently Asked Questions
Dr. Rivas focuses on chronic and complex conditions including fatigue, brain fog, thyroid disorders, adrenal dysfunction, hormonal imbalances, metabolic dysfunction, and nutrient deficiencies. He also has deep clinical experience with post-viral syndrome, long COVID, post-vaccine injury, autoimmune conditions, gastrointestinal disorders, cardiovascular risk, and chronic inflammation. His approach integrates internal medicine with functional and nutritional medicine to address root causes.
Yes. Dr. Rivas holds board certification in Internal Medicine. D. with honors from Georgetown University School of Medicine and completed his residency in internal medicine at Highland Hospital in Oakland, California.
No. Dr. Rivas conducts all consultations remotely via telemedicine. He works with clients throughout the United States and internationally.
Yes. Dr. Rivas is fully bilingual in English and Spanish. He conducts consultations in either language.
Dr. Rivas uses advanced specialty lab panels to guide care. He personally reviews all results with each client during dedicated lab review consultations. He works with Access Med Labs, Rupa Health, and Labcorp for lab ordering, and partners with Travalab for nationwide mobile phlebotomy for clients who need blood draws at home.
Dr. Rivas implements FLCCC and McCullough protocols for viral, post-viral, and post-injection conditions. He uses the CRMD SpikeFlam Profile, a specialty panel designed for post-COVID and post-injection assessment, to guide clinical decisions for these patients.
Dr. Rivas shares his personal email and phone number with every client. He makes himself available 24 hours a day, 7 days a week, 365 days a year for clients anywhere in the world.
Yes. Dr. Rivas provides pro bono health consultations to traditional Catholic families who face financial hardship. His commitment to prolife ethics extends through every aspect of his practice.
Doctor profile last updated April 11, 2026