expert care and clear guidance—
so you can live healthier and worry-free.
Oʻahu Patients
Welcome to Mililani Gastro!
Our mission is simple: to provide compassionate, expert care for patients facing digestive health concerns. We understand that gastrointestinal issues can be uncomfortable, confusing, and sometimes overwhelming. That’s why our team is committed to listening to your concerns, guiding you with clear answers, and offering advanced endoscopy and gastroenterology services right here in Central Oʻahu.
At Mililani Gastro, we value excellence, compassion, and trust. We believe every patient deserves personalized care, respect, and the confidence that comes from knowing they’re in capable hands. Our goal is to not only treat your condition but to give you peace of mind and help you return to living your best life.
Regular check-ups with a gastroenterologist help manage symptoms, prevent flare-ups, and protect your long-term health.
Meet the Team
At Mililani Gastro, we’ve brought together a team of highly trained physicians, nurses, and staff who are leaders in their field. Each member of our team shares the same commitment: to deliver exceptional, personalized care in a setting that is welcoming, compassionate, and patient-centered. We believe every patient deserves more than just treatment—they deserve clear answers, guidance, and a care plan designed around their unique health needs and goals.
Pedro A. Manibusan Jr., DO, MBA
Advanced Endoscopy Specialist
A graduate of Touro University of California, Dr. Manibusan completed his internal medicine residency at Tripler Army Medical Center in Honolulu and his gastroenterology fellowship at Brooke Army Medical Center in San Antonio, Texas.
Jorge E. Guzman, MD, PhD
Board-Certified Gastroenterologist
Dr. Guzman earned his medical degree, PhD, and post-doctoral fellowship at The Ohio State University College of Medicine.
Aaron J. Small, MD, MSCE
Board-Certified Gastroenterologist
After earning his medical degree at the world-renowned Mayo Clinic College of Medicine, Dr. Small completed his Internal Medicine residency at Cornell and his Gastroenterology fellowship at the University of Pennsylvania.
Maryson C. Cabudoy, RN, BSN
Director of Mililani Gastro
Maryson Cabudoy brings more than 30 years of nursing and leadership experience to Mililani Gastro, with a career dedicated to advancing patient care and increasing access to life-saving colon cancer screening.
Privileges Highlight
Our physicians are proud to provide care at the following facilities:
