Ran S. Kim

MD, FACS
Colon and Rectal Surgery

Over 25 years of Excellence

Committed to providing top-tier Colon And Rectal surgical services with a patient-centered approach.
Surgical
Consultations
Outpatient / Inpatient  Surgeries
Minimally Invasive /
Robotic Surgery
Neuromodulation for
Chronic Pelvic Dysfunction
Schedule your Appointment
Dr. Kim is available to provide surgical consultations and procedures at the additional following locations tailored to your specific needs.
John Muir Health
Sutter Delta Medical Center
Walnut Creek Endoscopy & Surgery Center
Premier Ambulatory Surgery Center
About the Surgeon

         Dr. Ran S. Kim, a board-certified surgeon, brings over 25 years of expertise in colon and rectal surgery. He earned his medical degree from the Medical College of Pennsylvania and completed extensive training in general surgery at renowned institutions like John Hopkins Medical Center and Stanford University Hospital. Further specializing with a fellowship in Colon & Rectal Surgery at Lehigh Valley University Hospital, Dr. Kim is a diplomate of the American Board of Surgery.
Education
MD from Medical College of Pennsylvania, General Surgery Residencies at Stanford and Johns Hopkins.
Specialty
Treats Colon and Rectal Cancer, Inflammatory Bowel Disease, and performs advanced laparoscopic and robotic surgeries.
Experience
Over 25 years in surgery with key roles as Medical Director at Andes Medical and U Wellness Medical.
Leadership
Former President of the Northern California Society of Colon & Rectal Surgeons.
Learn more
Services
At U Wellness Surgical, we offer a wide range of expert surgical and non-surgical services to address your healthcare needs. From routine screenings like colonoscopies and colorectal cancer screenings to advanced surgical procedures for conditions such as colon cancer, Crohn's disease, and Surgery for Diverticular Disease, our experienced team is dedicated to providing exceptional care. Discover our comprehensive services designed to ensure your well-being and recovery.

Outpatient Services

Alternative and second opinions in surgical
and non-surgical conditions
Crohn's Disease
Anal Abscess/Fistula
Hemorrhoids
Anal Fissure
Inflammatory Bowel Disease
Anal Warts
Pilonidal Disease
Anorectal Bleeding
Polyps of the Colon & Rectum
Chronic Pelvic Dysfunction
Pruritis - ani / anal itching
Colonoscopy
Ulcerative Colitis
Constipation
Vein Therapy

Inpatient Surgeries

Anal Cancer Surgery
Ostomy
Colon Cancer Surgery
Rectal Prolapse
Colorectal Cancer Surgery
Rectocele Surgery
Diverticular Disease
Patient Testimonials
"Dr. Kim handled my very complicated situation with excellent decisions, excellent surgical skills, and excellent communication. He worked very hard and responded promptly to our questions, which saved us a lot of worries.. If you want the best possible outcome from a surgeon who treats you with respect and sensitivity, he's the best."
"I met Dr. Kim at John Muir Hospital after being diagnosed with Diverticulitis and the recommendation of surgery by another surgeon. On my second visit I was introduced to Dr. Kim and both my wife and I felt very comfortable with his knowledge, diagnosis and bedside manner. He has been on call to answer my questions and has seen me on 2 extra occasions. I am comfortable with surgery in his hands and expect a complete normal recovery."
"I have had nothing but great experiences with Dr. Kim. A little over a year ago I was diagnosed with anal cancer and Dr. Kim performed the surgery to remove the mass. He also installed and removed my "port" in my shoulder for the chemo and also recently did a colonoscopy on me. So I have had four (outpatient) minor "surgeries" or "procedures" with him in the last year. So far I am still cancer free. I have found him to be skillful and compassionate. He has become one of my favorite Doctors."
"Thank you for your kindliness and professionalism. you did put me at ease, I didn't know what exactly I was facing. for a busy person like you two phone calls in one day. I'll give you from 1 to 10... 100/10! Thank you, you're in the right profession. Also, having your nurse, who is just as kind and gentle as you, I'll never be in better human hands. Thanks."
"I would like to extend my sincere thanks to you and your staff for your advice and care you have shown to me. I was so touched by your kindness and concern for my well being. You and your office staff have been so understanding. In my mind, you are not only an excellent physician, but a kind person who sincerely cares about his patients. you are greatly appreciated."
"Dr. Kim not only is an excellent surgeon who quickly scheduled an urgent surgery for me, he also put my mind at ease about the upcoming operation."
"Amazing surgeon, hands of an angel. Very supportive. Explained procedure. Gave me options whenever he could. Great surgeon!"
Location
Our Clinic is located at 1399 Ygnacio Valley Rd Suite 11-D, Walnut Creek, CA
Other Locations

Outpatient Facilities

Diablo Plaza Surgery Center
2222 East St Suite 290, Concord
Premiere Surgery Center
2222 East St, Suite 200, Concord
View on map
Walnut Creek Endoscopy Center
365 Lennon Lane, Suite 100, Walnut Creek
Sutter Delta Medical Center
3901 Lone Tree Way Antioch

Inpatient Hospitals

John Muir Health, Concord
Medical Center
2540 East St, Concord, CA
John Muir Health, Walnut Creek
Medical Center
1601 Ygnacio Valley Rd, Walnut Creek, CA

Our Mission

At U Wellness Surgical, our mission is to lead with expertise and compassion in colon and rectal surgery. Our team is dedicated to delivering superior surgical outcomes while prioritizing your comfort and well-being.

Our Values

Expertise
We are driven by a deep-rooted commitment to excellence in colon and rectal surgery, supported by decades of specialized experience and continuous professional development.
Compassion
We believe in treating every patient with empathy and understanding, ensuring a supportive environment throughout their surgical journey.
Comprehensive Care
Beyond surgical excellence, we emphasize the importance of holistic patient care, including dedicated post-operative support to promote healing and long-term well-being.
© 2024 U Wellness Surgical, All rights reserved.
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Clinic Hours

Monday - Friday
9:00AM - 5:00 PM

Contact us:

+1 925 430 5613