David Del Bello MD | Infectious Disease Physician | Internal Medicine Physician | Los Angeles, CA | PIH Health
David Peter Del Bello

David Peter Del Bello MD


Infectious Disease and Internal Medicine
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David Del Bello MD is an internal medicine doctor who specializes in infectious diseases, for which he completed a fellowship at Mount Sinai Hospital in New York City. During medical school, he took an infectious diseases elective course and after the first week, he knew that was the area he wanted to focus on to make a positive difference in people’s lives. He enjoys the thorough process of medicine, which is magnified in many ways in his subspecialty. He likes formulating thoughtful differential diagnoses, taking action based on his initial assessments and having results which confirm or challenge those assessments.

As an internist, Dr. Del Bello counsels his patients on their disease processes and actions they can take to treat or prevent it from happening again, so patients can have greater control over their health. While Dr. Del Bello consults on all manners of infectious diseases, he has extensive experience treating HIV, Hepatitis B and Hepatitis C. He also offers consultation for PrEP (Pre-Exposure Prophylaxis) in the prevention of HIV. He finds it gratifying that many infectious diseases can be treated, or better yet, outright cured.

Dr. Del Bello received a certificate of appreciation from the Central Louisiana Chapter of the American Red Cross and Fort Polk army base for humanitarian efforts undertaken in the wake of Hurricane Katrina in 2005. He was named Clinical Fellow of the Year for 2012-13 by the Mount Sinai Hospital Pediatric Residency Program. In 2014, he received the Travel Award at the HIV Liver Disease Meeting in Jackson Hole, Wyoming and the Young Investigator Award at the 2015 Conference on Retroviruses and Opportunistic Infections in Seattle, Washington.

Outside the clinic, Dr. Del Bello enjoys rollerblading and is a “massive” Star Wars fan.

Office Information

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Good Samaritan Hospital

PIH Health Physicians





Infectious Disease and Internal Medicine



University of California San Diego Cambridge Hospital (Massachusetts)


Icahn School of Medicine at Mount Sinai


Tulane University Medical Center (Louisiana)

Medical Education

SUNY- Upstate Medical University

Board Certifications

Infectious Disease (Sub-Spec Cert)

Internal Medicine (General Cert)