About Dr. Michael Villadelgado

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With over 25 years of trusted experience, Dr. Michael Villadelgado has cared for people across Orange County, earning a reputation for clinical excellence and compassionate, personalized care. 

He attended Keck School of Medicine at the University of Southern California, is board-certified in pediatrics, and is fully certified by the Institute for Functional Medicine to address complex health issues for people of all ages.  Dr. Villadelgado blends traditional medicine with a root cause, whole person approach. He treats both acute and chronic conditions by addressing the deeper factors that impact health including nutrition, environment, sleep, stress, genetics, and more. 

Now welcoming patients of all ages, Dr. Villadelgado helps individuals and families navigate: 

• Mental health challenges (anxiety, depression) 
• Neurodevelopmental conditions (ADHD, autism, PANS/PANDAS) 
• Sleep and sensory issues 
• Chronic digestive concerns (IBS, IBD) 
• Allergies, asthma, and immune dysregulation 
• Autoimmunity 

His care model goes beyond symptom management by focusing on healing, prevention, and long-term wellness. Every visit is a partnership built on trust, empathy, and a commitment to helping patients thrive.