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We are experiencing extremely high call volume related to COVID-19 vaccine interest. Please understand that our phone lines must be clear for urgent medical care needs. We are unable to accept phone calls to schedule COVID-19 vaccinations at this time. When this changes, we will update this web site. Please know that our vaccine supply is extremely small. Read all COVID-19 Vaccine Information.

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Colon and Rectal Surgery


We Are Here and Ready to Safely Care for You

At Johns Hopkins Medicine, your health and safety are our very highest priorities. We are ready to care for you and your family in our hospitals, surgery centers, and through in-person clinic and online video visits. Learn how we are keeping you safe and protected so that you can get the care you need.

View our in-person and video appointment options.


How We Make Sure You Are Safe

To help prevent the spread of COVID-19, our doctors and care teams are taking extra precautions to make your visit as safe as possible.

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Testing and Screening

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Masks and Protective Equipment

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Physical Distancing

Learn more about our COVID-19 safety precautions.


How to Schedule Your Appointment

In-Person Visits

If you are an existing patient and had an appointment that was postponed, our offices may contact you to reschedule. You can also call your doctor’s office or send a message via MyChart to discuss your healthcare needs so we can determine the appointment that is most appropriate. If you are a new patient, please call us at 443-997-1508 to schedule an in-person primary or specialty care visit.
Learn more about in-person visits.

Surgeries and Procedures

If you've been already scheduled for a procedure that had to be postponed, we will reach out to reschedule. If this is a new procedure, please contact us at 443-997-1508 to schedule a consultation.
Learn more about preparing for your appointment.

Video Visits (Telemedicine)

Many new and existing Johns Hopkins patients have the option to have a video appointment (telemedicine) with their provider, depending on their healthcare need. If you don't have a device to use for a video visit, you and your provider may decide that a telephone call will meet your needs.
Learn more about video visits.
New Patients*

*New patients have not been previously seen by a provider at the Department of Surgery. **Existing patients have been seen by the department in the past. Existing patients must have a MyChart account to request an appointment online, or may otherwise need to call. You can enroll in MyChart to manage appointments, communicate with your provider, receive test results and request prescription renewals.


Our colon and rectal surgeons offer the latest medical and surgical treatment of diseases of the colon, rectum and anus. Treatment includes benign and malignant conditions.

Colon and Rectal Surgery: Why Choose Johns Hopkins

  • Patients count on our advanced training and commitment to providing the most effective, most efficient and safest treatment options. 
  • We are among a limited number of institutions in the country to offer one of the latest surgical approaches, the 5x5 protocol, as an aggressive form of rectal cancer treatment.
  • We offer additional world-class cancer treatment at our Colorectal Cancer Center, part of the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins.
  • Working with other specialists, our team provides consistent and seamless treatment for patients by performing routine screening examinations and surgically treating colon and rectal conditions when necessary.

Patient Perspectives | Gary Waymire – Colorectal Cancer

After a large polyp was discovered in Gary Waymire's rectum following a routine colonoscopy, he sought a second opinion at The Johns Hopkins Hospital. The Johns Hopkins team used a series of aggressive and innovative surgical procedures as part of Gary’s treatment. Now cancer-free, Gary makes the most out of life’s simple pleasures, including walking 8 to 9 miles each day and spending precious moments with his wife at home in Virginia.


Conditions We Treat

We specialize in the surgical treatment of colon and rectal diseases, including:


Fecal Incontinence: Causes, Risk Factors and Treatments | Colorectal Surgeon Susan Gearhart

Colon and rectal surgeon Susan Gearhart discusses the causes, risk factors and treatment options available for individuals diagnosed with fecal incontinence, including Johns Hopkins’ multidisciplinary team approach to administering care.


Our Advanced Treatment Approaches

Your physician will talk with you about which is the best option for your condition:

5x5 Rectal Cancer Treatment Protocol | Q&A

Bashar Safar, chief of colorectal surgery, describes one of the latest approaches against advanced stage rectal cancer: the 5x5 protocol. As an aggressive form of rectal cancer treatment, the 5x5 protocol delivers 5 grays (Gy) of radiation to patients for five days for a total of 25 Gy.


5x5 – Latest in Rectal Cancer Treatment

Johns Hopkins colon and rectal cancer surgeons continue to lead the way in medical advancements aimed at colon and rectal cancer therapies.

What is the 5x5 protocol?

The 5x5 protocol administers 5 grays (Gy) of radiation for five days for a total of 25 Gy in combination with full-dose chemotherapy for advanced rectal cancer. As a result, patients receive a more consolidated dose of chemotherapy and radiation therapy prior to surgery. This systemic approach is a break from the more conventional method of delivering radiation over a longer five-week period.

Advantages of the 5x5 protocol:

  • A shorter, more aggressive approach to rectal cancer treatment
  • Ability to deliver chemotherapy prior to surgery
  • More convenient for patients

The future of the 5x5 protocol

Johns Hopkins researchers will soon publish the results from a 5x5 protocol study and the outcomes of 30 to 40 patients who have undergone this procedure, nationally.

Your surgeon will work with you to determine the best treatment plan based on your diagnosis and circumstance.

Meet Our Physicians

Advanced Practitioners

Tam Warczynski, CRNP
Andi Gerard, CRNP
Janelle Glover, CRNP
Marybeth Blom, RN
Nicolle Cowell, RN
Carol Cwik, RN


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