Unio Specialty Care Gastroenterology Welcomes Dr. Robert Mecum!

Dr. Robert Mecum has joined Unio Specialty Care, California’s largest independent medical group providing gastroenterology, urology, and radiation oncology services. Your care team and office locations remain the same. If you have questions about this transition, please call our office directly at (562) 789-5577.

Staying the Same

Your Care team
Our office locations
Our office phone number

Changing

Practice name on paperwork
Billing entity (Genesis Healthcare Partners, LLP)

Unio Specialty Care – Gastroenterology – San Francisco – Geary Blvd

Q: What is a colonoscopy and when should I get one?

A colonoscopy is a diagnostic and preventive procedure ... Screenings typically begin at age 45 or earlier if you have risk factors. Sedation is provided at our Geary Blvd clinic.

Office Hours

Monday

8:30am - 5:00pm

Tuesday

8:30am - 5:00pm

Wednesday

8:30am - 5:00pm

Thursday

8:30am - 5:00pm

Friday

8:30am - 5:00pm

Saturday

Closed

Sunday

Closed

Office Hours

Monday

8:30am - 5:00pm

Tuesday

8:30am - 5:00pm

Wednesday

8:30am - 5:00pm

Thursday

8:30am - 5:00pm

Friday

8:30am - 5:00pm

Saturday

Closed

Sunday

Closed

Choose a Provider Below to Schedule an Appointment

If you are an existing patient, please select your provider

Nancy Ho, MD

Frank J. Farrell, MD

Cathleen N. Cabansag, MD

Reviews

Top Gastroenterology Clinic on Geary Blvd – Now Accepting New Patients

At Unio Specialty Care on Geary Boulevard in San Francisco, our board-certified gastroenterologists provide expert care for a full range of digestive health issues—from routine colon cancer screenings to the treatment of complex GI conditions. We take pride in delivering clear answers, modern diagnostics, and compassionate care at every step.

Conveniently located near Japantown and Lower Pacific Heights, our clinic is easily accessible from many San Francisco neighborhoods. We offer flexible appointments, attentive communication, and advanced endoscopic procedures in a comfortable outpatient setting.

If you’re searching for a trusted GI doctor in San Francisco, we welcome you to our Geary Blvd clinic. We proudly serve patients from:

Lower Pacific Heights
Japantown
Inner Richmond
Haight‑Ashbury
Cole Valley
Inner Sunset
Western Addition
Presidio Heights
Laurel Heights
Polk Gulch

GI conditions we treat at our San Francisco clinic

We diagnose and manage a broad range of gastrointestinal and liver-related conditions including GERD, IBS, Crohn’s disease, ulcerative colitis, Barrett’s esophagus, liver disease, and more. Preventive colon cancer screening is a core part of our care offerings.

We are accepting new patients for colon cancer screening

Our GI specialists in San Francisco welcome new patients for colonoscopy and other colon cancer screenings. If you’re age 45 or older, or have risk factors, we recommend scheduling an appointment.

What to expect at your first gastroenterology visit

During your first appointment, our team will review your medical history, listen to your symptoms, and recommend appropriate diagnostics or treatment. This may include labs, imaging, or procedures such as an upper endoscopy or colonoscopy.

What is a colonoscopy and how do I prepare?

A colonoscopy is a highly accurate screening test for detecting colon cancer and polyps. You’ll receive personalized prep instructions, and sedation is offered for your comfort. Learn more about colonoscopy screening.

GI Services Offered at Our San Francisco Office

Colonoscopy
Flexible sigmoidoscopy
Upper endoscopy (EGD)
Capsule endoscopy
Liver function testing and FibroScan
Hemorrhoid banding therapy
SIBO hydrogen breath testing
Endoscopic ultrasound (EUS)
ERCP and biliary procedures
Nutrition counseling for GI health

Frequently Asked Questions

What is a colonoscopy and when should I get one?

A colonoscopy is a diagnostic and preventive procedure that examines your colon for cancer, polyps, and inflammation. Screenings typically begin at age 45 or earlier if you have risk factors. Sedation is provided at our Geary Blvd clinic.

Do you treat IBS (Irritable Bowel Syndrome)?

Yes. We offer personalized IBS management at our San Francisco location—including diet counseling, medication, and symptom management.

Can you help with acid reflux or GERD?

Absolutely. We provide evaluation, medication, and upper endoscopy for GERD and chronic heartburn—right here on Geary Blvd.

Is your clinic close to Japantown or Inner Richmond?

Yes. Our Geary Blvd location is easily accessible from Japantown, Inner Richmond, Lower Pacific Heights, and Cole Valley, with free parking and convenient transit.

Do you offer hemorrhoid treatment?

Yes. We perform in‑office hemorrhoid banding procedures that are minimally invasive with minimal downtime.

What GI services are offered at the Geary Blvd office?

We provide colonoscopy, upper endoscopy, capsule endoscopy, ERCP, EUS, hemorrhoid banding, SIBO testing, liver testing, and nutrition counseling.

Do you offer nutrition counseling for GI conditions?

Yes. We provide customized nutritional guidance for conditions like IBS, GERD, IBD, and celiac disease to support your treatment plan.

Ready to Make an Appointment?

We are the largest gastroenterology physician group in California. Our organization is committed to providing high-quality, patient-centered care in a private practice setting. Our physicians are experts in the diagnosis and treatment of diseases of the gastrointestinal system, including those of the esophagus, stomach, colon, liver, small intestine, gallbladder, pancreas, and biliary tract.

Make an appointment today to start your journey to better health!