Accepting new patients

Daniel O. Herzig, M.D., M.B.A., FACS, FASCRS (he/him)

Accepting new patients

  • Professor of Surgery
  • Professor of Surgery, Division of Gastrointestinal and General Surgery, School of Medicine

Expertise

  • Cancer
  • Digestive Health
  • Surgery

Special focus

  • Anal Cancer
  • Colorectal Cancer
  • Digestive Surgery
  • Gastrointestinal Cancer
  • General Surgery

Locations and contact

I see patients at

About me

Dr. Herzig specializes in the surgical treatment of colon and rectal diseases. He earned his medical degree from Vanderbilt University and completed his surgical residency at Brown Medical School. At Brown, he won over a dozen awards for excellence in teaching, patient care, and research, including the Outstanding Resident Physician award in his last year. He went on to complete advanced training in colon and rectal surgery, including minimally invasive surgery and endoscopy at the University of Texas, Houston. Dr. Herzig is board certified in surgery and colon and rectal surgery.

Dr. Herzig joined the faculty at OHSU in 2005. He is part of the OHSU Digestive Health Center and the OHSU Knight Cancer Institute. He specializes in the treatment of both cancerous and noncancerous diseases of the colon and rectum. Dr. Herzig is committed to providing the highest quality personal service to each individual. Because of this, he has been recognized as one of “Portland’s Top Doctors" and has been named as one of "America’s Top Surgeons.”

Cancerous diseases include colon, rectal, and anal cancer. These are potentially curable cancers for many, if not most people who are affected. Individualized care is provided for each person. Whether as an initial visit, or as a second opinion after seeing another provider, Dr. Herzig will make sure each person understands their disease and all treatment options. While surgery remains the cornerstone of curing colorectal cancer, colorectal cancer care at OHSU comes from a team of people to address the complex nature of this problem, including of some of the country’s best physicians in this field. In our multidisciplinary clinic, we bring together all of the experts needed in one place at one time. Patients can see their surgeon, as well as an oncologist, nutritionist, geneticist, or radiation specialist all in one visit. Care is coordinated so that each individual receives the optimal, state-of-the-art approach. Clinical trials are available, if desired, for many patients with colorectal cancer.

Noncancerous (benign) diseases include the treatment of hemorrhoids, anal fissures, anal fistulae, diverticulitis, and rectal prolapse. In the treatment of benign diseases, Dr. Herzig treats each patient individually, working together to find the appropriate treatment for each person’s symptoms. This can often be done with non-operative and office treatments.

Dr. Herzig’s research interests include colorectal surgery outcomes and hereditary colorectal cancer syndromes. He started the state’s first colorectal cancer registry and has collaborated with other researchers at OHSU to continue this institution’s leadership in colorectal cancer research.

Languages spoken

  • English

Education and training

    • M.D., 1999, Vanderbilt University School of Medicine
    • M.B.A., 2020, Oregon Health & Science University/Portland State University
  • Residency

    • General Surgery, Brown University/Rhode Island Hospital, Providence, RI  1999-2004
  • Fellowship

    • Colorectal Surgery, University of Texas Health Science Center at Houston, Houston, TX, 2004-2005
  • Certifications

    • American Board of Surgery, 2005
    • Colon and Rectal Surgery, 2006

Memberships and associations:

  • Fellow, American College of Surgeons
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Insurance

Before scheduling your appointment, we recommend you contact your insurance company to verify that the OHSU Health location or provider you plan to visit is included in your network. Your insurance company will also be able to inform you of any copayments, co–insurance, or deductibles that will be your responsibility. If you proceed in scheduling an appointment and your health insurance benefits do not participate with OHSU providers, your out of pocket liability may be higher. Visit the billing and insurance section of our site for more information.

Ratings and reviews

Overall: 4.9 out of 5 (526 Ratings, 237 Reviews)

The patient ratings score is an average of all responses to the question "How likely would you be to recommend this provider to your family and friends (on a scale of 0 to 10)" on our nationally-recognized NRC patient surveys.

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