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Gastroenterology at Parnassus

Gastroenterology at Parnassus provides care in the prevention, diagnosis and treatment of diseases of the digestive tract, including the stomach, duodenum, gallbladder, biliary tract, pancreas, small intestine and colon.

We offer expertise in general gastroenterology as well as endoscopic therapy of obstructive jaundice, benign and malignant pancreatic diseases, endoscopic management of malignant bowel obstructions, and endoscopic management of complications after surgical esophagectomies and liver transplants.

You'll need a referral from your primary care provider or specialist to make an appointment. Once you have the referral, please call the number below.

Getting Here

Gastroenterology at Parnassus
350 Parnassus Ave., Suite 410
San Francisco, CA 94143
Phone: (415) 502-2112
Fax: (415) 514-3300

Hours: Monday to Friday, 9 a.m. – 4 p.m.

Additional Locations
Gastroenterology at Mount Zion

What to Bring

  • Health insurance information including authorizations or referrals
  • List of prescription medications and dosages
  • List of medications that you're allergic to
  • List of questions you may have
  • Recent test results related to your condition
  • Paper and pencil to take notes

Access Your Health Information Online

This clinic uses UCSF MyChart, an online patient service. Message your provider, request medication refills, view some test results and more.

Learn more about UCSF MyChart

Research and Clinical Trials

First Appointment

To schedule your first appointment at Gastroenterology at Parnassus, please fax the following information to (415) 514-3300:

  • A referral letter, including your diagnosis, from your primary care doctor or specialist.
  • All related doctor's notes and lab and test results.
  • Copy of insurance card (front and back).

    The center accepts most health insurance plans. Some insurance plans won't cover the full amount and you will be responsible for the remainder. Call your insurance representative to confirm eligibility, benefits co-pay and the deductible.
  • Copy of authorization from insurance, if required.
  • Your contact information, including mailing address and phone numbers.

If you have any questions, please call the clinic at (415) 502-2112.

Parking

Parking at Parnassus

Public parking for an hourly fee at UCSF Medical Center is available in the seven-level Millberry Union Garage at 500 Parnassus Ave. There are two garage entrances — one on the north side of Parnassus Avenue and another on Irving Street, just east of Third Avenue.

Another garage with an hourly fee, at 350 Parnassus Ave., is open Monday to Friday from 6 a.m. to 10 p.m.

Metered street parking is rarely available.

Patients being admitted to the hospital may be dropped off at the circular driveway leading to the main entrance at 505 Parnassus Ave. This area also may be used to pick up patients who are being discharged.

For more information about parking at Parnassus, call Campus Parking Services at 476-2566.

Valet Parking Service

Valet parking service is available at the Ambulatory Care Center (ACC) at 400 Parnassus Ave. from 8 a.m. to 3 p.m. The valet service is free but patients must pay regular parking fees. For more information about the valet service, call (415) 476-6200.

A UCSF "greeter" also is available at the ACC from 8 a.m. to 5 p.m. to assist patients find their way.

Public Transportation

Parnassus

UCSF Medical Center is accessible via Muni streetcar line N-Judah*, which stops at Second Avenue and Irving Street, and the following Muni bus lines, which stop in front of the hospital:

  • 43-Masonic*
  • 6-Parnassus

For more information about Muni visit, www.sfmuni.com.

* Wheelchair accessible bus routes

Related Information

Ways to Give

Clinics & Centers

Clinic Team

James Ostroff
Dr. James Ostroff,
gastroenterologist
Karen Bagatelos
Dr. Karen Bagatelos,
nurse practitioner