Dr. Tuai attended Ohio State University, College of Medicine after he received his Undergraduate Degree in Biochemistry at UC Davis in 1992. He completed his general surgery residency at UC San Francisco/Fresno, where he spent a year as a clinical instructor in the Department of Surgery, before beginning a private practice in Chino. He joined the Group in December, 2004.Dr. Tuai is a Board Certified surgeon and a Fellow of the American College of Surgeons who has extensive experience with advanced laparoscopic and minimally invasive techniques including robotic surgery.Dr. Tuai's passion is minimally invasive surgeries, especially involving the colon, stomach, gall bladder, and hernias. He is fluent in Mandarin Chinese and Korean.Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Tuai is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Hernia, Gallstones, Choledocholithiasis, Hernia Surgery, and Ileostomy.

Dr. Eisner attended medical school at New York University after receiving his undergraduate degree in Integrative Biology at U.C. Berkeley. He completed his General Surgery residency at U.C. San Diego. Dr. Eisner is a board eligible general surgeon with extensive experience in general surgical procedures including gastrointestinal (esophageal, stomach, small intestine, colon, rectal and anus), esophageal reflux, hernia (inguinal, umbilical, and ventral), skin and soft tissue (skin cancer and melanoma, lipoma, pilonidal), breast (benign and cancer) with advanced laparoscopic, minimally invasive, endoscopic, and robotic surgery skills.  As the newest member of our surgical team and a Southern California native, Dr. Eisner spends his off time surfing, rock climbing, and hiking. He is conversant in Spanish and fluent in French. Dr. Eisner is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Gallstones, Hernia, Gallbladder Disease, Bladder Reconstruction, and Gallbladder Removal.

Patrick Mccarty is a General Surgeon in Oxnard, California. Dr. Mccarty is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Hernia, Gallstones, Choledocholithiasis, Gallbladder Removal, and Endoscopy. Dr. Mccarty is currently accepting new patients.

Dr. Lisa Babashoff is Board Certified in General Surgery and a Fellow of the American College of Surgeons. She has been in practice in the Ventura County area since the year 2000. She completed her undergraduate work at UCLA, attended Chicago Medical School, and went on to complete her general surgery residency at UC San Francisco/Fresno. Dr. Babashoff is the ​​Director of the Integrated Breast Center at St. John’s Regional Medical Center. She brings a broad range of general surgery experience to the Group, including a focus on breast and laparoscopic surgery. She is conversant in the Spanish language. Dr. Babashoff is a member of the American Society of Breast Surgeons and serves on the Board at the Integrative Breast Center at St. John’s Regional Medical Center as the Designated Breast Surgeon.Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Babashoff is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. Her top areas of expertise are Intraductal Papilloma, Angiosarcoma, Inflammatory Breast Cancer, Hernia Surgery, and Colostomy.

Manuela Venturoni is a primary care provider, practicing in Internal Medicine in Oxnard, California. Dr. Venturoni is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. Her top areas of expertise are Hospital-Acquired Pneumonia, Atypical Pneumonia, Sepsis, Gastrostomy, and Fasciotomy.

Samantha Wu is a General Surgeon in Oxnard, California. Dr. Wu has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. Her top areas of expertise are Gallstones, Choledocholithiasis, Gallbladder Disease, and Retroperitoneal Inflammation. Dr. Wu is currently accepting new patients.

Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Lopresti is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Choledocholithiasis, Gallstones, Gallbladder Disease, Bladder Reconstruction, and Hernia Surgery.

Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Dixon is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Choledocholithiasis, Hernia, Breast Cancer, Hernia Surgery, and Colostomy.

Dr. Billy is the leading Lap-Band, laparoscopic gastric bypass and laparoscopic gastric sleeve surgeon in Ventura and Santa Barbara County. Dr. Billy relocated his practice to Ventura in July of 2002. Prior to that he had established himself as one of the premier laparoscopic surgeons in the Sacramento and Sierra Nevada region of Northern California. Dr. Billy was instrumental in developing the bariatric surgery centers at Sutter General Hospital and Sutter Roseville Medical Centers. He is currently director of Bariatric Surgery at St. John's Regional Medical Center, a recognized bariatric Center of Excellence by the Surgery Review Committee, Medicare, Blue Cross, Blue Shield and Health Net. St. Johns Regional Medical Center is located in Oxnard California. Dr. Billy also serves as the Medical Director of the Community Memorial Hospital, a Surgical Review Corporation accredited Bariatric Center of Excellence, located in Ventura, California. Dr. Billy obtained his undergraduate degree in Molecular Biology at the University of California, Berkeley. He subsequently received his medical degree at the University of California, Davis School of Medicine. Dr. Billy received additional training in the techniques of the Lap-Band system prior to its release by the FDA in 2001. He is actively involved as a teaching faculty member for placement of the Lap-Band® system and has educated and proctored dozens of surgeons throughout the west as part of their educational training. Dr. Billy has been a faculty member at numerous national educational events and surgeon training workshops. He has been a featured speaker at the annual meeting of the American Society of Metabolic and Bariatric Surgery and was a contributing author on the recently released SAGES Bariatric Surgery Manual published by the Society of American Gastrointestinal and Endoscopic Surgeons. Dr. Billy has an international reputation and has lectured and taught principles of bariatric surgery in Mexico, Taiwan and India.Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals.In May 2022 Dr. Billy was elected to the American Society for Metabolic and Bariatric Surgery Council, the largest and most prestigious National Society for metabolic and bariatric surgery.The executive council consists of 8 ASMBS members who represent the leadership of the National Society.The vision of the society is to improve public health and well being by lessening the burden of the disease of obesity and related diseases throughout the world. Dr. Billy is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Obesity, Malabsorption, Hiatal Hernia, Gastrectomy, and Sleeve Gastrectomy.

I am committed to providing the highest level of quality and compassion in surgical care to the residents of Ventura County. I offer the most evidence-based and modern surgical techniques available in order to provide superior care and achieve better outcomes for my patients. Furthermore, I am dedicated to providing a patient-centered care experience that enables each patient to make a well-informed decision about their care. Dr. Brand is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. Her top areas of expertise are Hernia, Peptic Ulcer, Necrosis, Gallbladder Removal, and Hernia Surgery.

Douglas Woodburn is a General Surgeon in Ventura, California. Dr. Woodburn is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Proctitis, Hernia, Anorectal Abscess, Bladder Reconstruction, and Lymphadenectomy. Dr. Woodburn is currently accepting new patients.

Karim Jreije is a General Surgeon in Ventura, California. Dr. Jreije has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Gallbladder Adenocarcinoma, Gallbladder Disease, Appendicitis, Sleeve Gastrectomy, and Gastrectomy. Dr. Jreije is currently accepting new patients.

Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Fatmi is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Fistula. His top areas of expertise are Necrosis, Cellulitis, Peptic Ulcer, Endoscopy, and Coronary Artery Bypass Graft (CABG).