Patrick Koo, MD
Gastroenterology Internal Medicine
Patrick Koo, MD practices as part of a group gastroenterologist practice in Fullerton, CA. A Pennsylvania State University College of Medicine graduate since 2012, he brings 14+ years of experience. Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), and more.
Data updated 2024-10-22 on CMS NPPES
Contact & Location
Practice Location
1837 Sunny Crest Dr, Fullerton, CA 92835-3616
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.
Taxonomy: 207RG0100X
Education & Training
Pennsylvania State University College of Medicine (Class of 2012)
Virtual Internal Medicine Care With Patrick Koo
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Patrick Koo for follow-ups, medication reviews, and ongoing care — no travel to Fullerton required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Patrick Koo
NPI records show Dr. Koo as active with telehealth listed in Fullerton, CA. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (714) 446-5831.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
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