
Overview
Dr. B. Mark Zhao is a colorectal surgeon who cares for patients with conditions of the colon, rectum and anus. His expertise encompasses inflammatory bowel diseases, such as Crohn's disease and ulcerative colitis; colon, rectal and anal cancers; diverticulitis (infection or inflammation of small pouches in the intestines); and pelvic floor disorders, including rectal prolapse, fecal incontinence (problems with bowel control) and constipation. He specializes in using minimally invasive surgical techniques to treat many of these conditions, including transanal endoscopic microsurgery (a procedure using special instruments to remove rectal tumors without surgical incisions). He also performs colonoscopies and endoscopies to screen for or diagnose conditions of the colon and rectum. Zhao conducts research on colorectal surgical outcomes, with the goal of making these procedures safer and more effective. He has a particular interest in using biomedical informatics (health-related datasets) to improve patient care. Zhao earned his medical degree from the University of Iowa Carver College of Medicine. He completed a residency in general surgery at the University of California, San Diego, where he also earned a master of advanced study degree in clinical research and completed a fellowship in clinical informatics. He completed a fellowship in colon and rectal surgery at Washington University in St. Louis, training at Barnes-Jewish Hospital.
His top areas of expertise are Colorectal Cancer, Bowel Incontinence, Gastrointestinal Stromal Tumor, Mastectomy, and Gastrectomy.
His clinical research consists of co-authoring 40 peer reviewed articles. MediFind looks at clinical research from the past 15 years.
Graduate Institution
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Languages Spoken
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Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
Accepted plan types not found. Please verify directly with the provider.
- OTHER MEDICAID
- STATE MEDICAID
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
1825 Fourth St., Fourth Floor, San Francisco, CA 94158
Additional Areas of Focus
Dr. Zhao has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
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Dr. Emily Finlayson is a colorectal surgeon with expertise in the treatment of colon and rectal cancer, ulcerative colitis and Crohn's disease. She is a specialist in minimally invasive surgical techniques. Finlayson's research examines population-based surgical outcomes, focusing particularly on functional outcomes in the frail elderly. Finlayson earned her medical degree at Harvard Medical School. She trained in general surgery at UCSF and in colon and rectal surgery at the Mayo Clinic in Rochester, Minnesota. She also earned a master of science degree at the Dartmouth Institute for Health Policy and Clinical Practice, and she completed a research fellowship with the White River Junction Veterans Affairs Medical Center in Vermont. Finlayson served on the surgery department faculty at the University of Michigan and on the Michigan Surgical Collaborative for Outcomes Research and Evaluation. She returned to UCSF in 2009. Dr. Finlayson is highly rated in 8 conditions, according to our data. Her top areas of expertise are Anal Cancer, Delirium, Crohn's Disease, Ileostomy, and Aneurysm Repair.
Frequently Asked Questions about Dr. B M. Zhao
How do I make an appointment with Dr. B M. Zhao?
You can book an appointment with Dr. B M. Zhao by calling their office at 415-885-3606. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. B M. Zhao a top-rated expert for Colorectal Cancer?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. B M. Zhao is classified as an Experienced expert for Colorectal Cancer, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. B M. Zhao specialize in?
While Dr. B M. Zhao is a Colorectal Surgery, they have specific expertise in Colorectal Cancer, Bowel Incontinence, and Gastrointestinal Stromal Tumor. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Colorectal Surgery.
Does Dr. B M. Zhao participate in research or clinical trials?
Yes. Dr. B M. Zhao has published 40 articles and abstracts on conditions like Colorectal Cancer. You can view a list of Dr. B M. Zhao's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.
Does Dr. B M. Zhao accept my insurance?
Dr. B M. Zhao accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 415-885-3606 to verify that your specific plan is currently accepted before your visit.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- Anal FissureDr. Zhao isExperienced. Learn about Anal Fissure.
- Bowel IncontinenceDr. Zhao isExperienced. Learn about Bowel Incontinence.
- Colorectal CancerDr. Zhao isExperienced. Learn about Colorectal Cancer.
- Colorectal PolypsDr. Zhao isExperienced. Learn about Colorectal Polyps.
- EndoscopyDr. Zhao isExperienced. Learn about Endoscopy.
- Gallbladder RemovalDr. Zhao isExperienced. Learn about Gallbladder Removal.


