General Surgery
General Surgery is a specialty that focuses primarily on the organs and soft tissue of the abdomen. The surgeons at Kaiser Permanente Orange County are experts that provide our patients with compassionate and comprehensive surgical care. Our General Surgeons utilize innovative technologies to evaluate, treat, and manage diseases or injuries that require elective or immediate surgery. Our surgeons work diligently to develop and implement a surgical plan that optimizes our patients‘ outcomes.
Procedures we perform
- Abdominal Surgery
- Breast Surgery
- Endocrine Surgery
- Minimally Invasive Surgery
- Colorectal Surgery
- Thoracic Surgery
- Gastrointestinal Surgery
- Hernia Surgery
- Surgical Oncology
Prepare for your Surgery
Your preoperative instructions
- Planning for Your Surgery — Anaheim Medical Center PDF
- Getting Here PDF
- Planning Ahead PDF
- Important Information For Your Surgery PDF
- Before Surgery - Diet Instructions Checklist PDF
- Before Surgery - Preparing the Skin Checklist PDF
- After Surgery - Pain Management PDF
- Frequently Asked Questions PDF
- Questions and Notes You May Have PDF
- Schedule and Appointment Times Checklist PDF
- Planning for Your Surgery — Anaheim Medical Center — Español PDF
- Planning for Your Surgery — Irvine Medical Center PDF
- Getting Here PDF
- Planning Ahead PDF
- Important Information For Your Surgery PDF
- Before Surgery - Diet Instructions Checklist PDF
- Before Surgery - Preparing the Skin Checklist PDF
- After Surgery - Pain Management PDF
- Frequently Asked Questions PDF
- Questions and Notes You May Have PDF
- Schedule and Appointment Times Checklist PDF
- Planning for Your Surgery — Irvine Medical Center — Español PDF
Additional resources
- Preparing for your Surgery during COVID-19 PDF
- Preparing for your Surgery during COVID-19 — Español PDF
- Surgery Patient Calendar PDF
- Surgery Patient Calendar — Español PDF
- How You can prevent surgical site infections PDF
- Constipation Care Instructions PDF
- OCROI Medical Correspondence Flyer PDF
- Advanced Directive Information
Department Physicians
- Hector H. Arroyo, MD
- Umer I. Chaudhry, MD
- James E. Coleman, MD
- Marc J. Davison, MD
- Lilian Estrada-Linder, MD
- Henry H. Fang, MD
- Donna J. Formichella, MD
- Eric J. Fu, MD
- Mark W. Gow, MD
- Henry B. Hwu, MD
- Bryan D. Loh, MD
- Terence M. Mayers, MD
- Kathy Jean M. Nakano, MD
- Rupa Patel, MD
- Leslie B. Rand-Luby, MD
- Maryam N. Saidy, MD
- Jan B. Schimke, MD
- Richard H. Suh, MD
- Larissa R. Tan, MD
- Lydia J. Vaias, MD
- Julio E. Vaquerano, MD
- Susan Lynn Walker, MD
- Christopher P. Washington, MD
- Aaron P. Wilcox, MD
- Nader Yamin, MD
- Kam Zainabadi, MD
