About Dr. Brianna Williams
Dr. Brianna Williams is a board-certified general surgeon with advanced expertise in minimally invasive surgery and complex rectal cancer management. She is dedicated to delivering comprehensive, evidence-based surgical care with an emphasis on technical precision, thoughtful communication, and individualized treatment planning.
Dr. Williams received her medical degree from the University of California, Irvine School of Medicine. She completed her General Surgery residency at Riverside Community Hospital, where she gained an extensive foundation in both elective and acute care surgery. She subsequently pursued fellowship training at Lankenau Medical Center in Wynnewood, Pennsylvania in Minimally Invasive Surgery and Advanced Rectal Cancer Management. She trained under Dr. John Marks, a globally recognized leader in robotic and sphincter-preserving surgery for low rectal cancer, further advancing her expertise in complex colorectal and oncologic procedures. Her practice encompasses a wide spectrum of benign and malignant disease, including colon and rectal cancer, diverticulitis, inflammatory bowel disease, and anorectal disorders. She performs minimally invasive colectomy and proctectomy, low anterior resection, abdominoperineal resection, transanal excision of rectal lesions, ostomy creation and reversal. She works closely within a multidisciplinary team to ensure coordinated, patient-centered oncologic care.
In addition to her colorectal specialization, Dr. Williams provides comprehensive general surgical services, including cholecystectomy, appendectomy, inguinal and ventral hernia repair, small bowel resection, lysis of adhesions, management of bowel obstruction, and excision of soft tissue and abdominal wall masses. She offers both elective and urgent surgical care, utilizing minimally invasive techniques whenever appropriate to support optimal recovery and outcomes.
Practice
United Medical Doctors
United Medical Doctors (UMD) is dedicated to improving the health of our communities by setting the standard of excellence in specialty medical & surgical care. UMD currently offers 50+ medical & surgical specialties with over 200 providers in 80+ locations across four Southern California counties: Riverside, Orange, San Diego & Los Angeles. Our specialties include: Acupuncture | Allergy | Anesthesia | Audiology | Bariatric Surgery | Breast Surgery | Cardiology | Clinical Research | Colorectal Surgery | Complex GI Surgery | Dermatology | Dietitian | Endocrine Surgery | Endocrinology | Family Medicine | Fitness | Foot & Ankle Specialist & Surgery | Gastroenterology | General Surgery | Gynecology | HPB Surgery | Hepatology | Imaging | Infusion Therapy | Internal Medicine | Medical Weight Loss | Men’s Health | Minimally Invasive Gynecologic Surgery | Neurosurgery | Oncology | Otorhinolaryngology (ENT) | Orthopaedic Surgery | Pain Management | Pathology | Pediatric Gastroenterology | Physical Therapy | Plastic Surgery | Psychiatry | Radiology | Spine Medicine | Sports Medicine | Urgent Care | Urogynecology & Female Pelvic Health | Urology | Wound CareOffice location
Education and background
Hospital affiliations
- Riverside Community Hospital
- Parkview Community Hospital Medical Center
Board certifications
- American Board of Surgery
Education and training
- Medical School - University of California, Irvine, School of Medicine, Doctor of Medicine
- Riverside Community Hospital, Residency in Surgery
- Lankenau Medical Center, Fellowship in Minimally Invasive Surgery
Languages spoken
- English
Provider's gender
Female
NPI number
1548729643