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Pathology Lab Testing & Diagnostics

Our Pathology Laboratory studies organs and tissues to diagnose disease.

About Our Laboratory

PLEASE NOTE that patient services are not available in the Pathology Laboratory – go to the Urgent Care Clinic for assistance. The Urgent Care Clinic is located at 995 Potrero Ave, Building 80, 1st floor.

Fine Needle Aspiration Biopsy Services are available at multiple clinic facilities throughout the ZSFG campus. For provider referrals and/or self referrals, there are two drop-in clinics on site:

  • 1M General Medicine Clinic in Building 5
  • Outpatient Clinic in Building 5 Lobby


Our Providers

  • Walter Finkbeiner, MD, PhD
  • Kuang-Yu Jen, MD, PhD
  • Jean Olson, MD
  • Timothy McCalmont, MD
  • Jeffrey North, MD
  • James Grenert, MD, PhD
  • Stephen Nishimura, MD
  • Stephen DeArmond, MD, PhD
  • Beth Ruben, MD
  • Thaddeus Mully, MD
  • Douglas Hanks, MD
  • Poonam Vohra, MD
  • Philip LeBoit, MD
  • Laura Pincus, MD

Our Location

1M Clinic
Zuckerberg San Francisco General
1001 Potrero Avenue (between 22nd and 23rd Streets)
San Francisco, CA 94110
Building 5, 1st Floor, Suite 102

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  • Hours
    Pathology Department
    Mon – Fri
    8am – 5pm
    Fine Needle Aspiration Service
    Mon – Fri
    9am – 3pm
    Patient Services (Urgent Care)
    Mon – Fri
    8am – 11:30am
    1pm – 4:30pm
  • Contact
  • Directions

    The 1M Clinic is located in Building 5, Outpatient Clinic Lobby. Medicare/Medi-Cal patients go directly to clinic. Otherwise, check-in with Registration in the lobby.

  • Public Transport


    Our Main Campus is served by Muni routes 9, 10, 33, 49, and 90.

    View Muni Schedule

    Plan Your Trip


    The closest BART stop is the 24th Street Mission station.

    View BART Schedule

    Plan Your Trip

    Free Shuttles

    UCSF Shuttle

    Free shuttle to UCSF locations in the city, including our Main Campus.

    View Shuttle Map & Schedule

    ZSFG Shuttle

    Free shuttle to the 24th Street Mission BART station during peak commute times.

    View Shuttle Map & Schedule


  • Parking

    On Campus

    Enter hospital campus driveway and turn right into the surface lot.

    23rd Street Parking Garage

    Enter from 24th Street (during the day) and 23rd Street (in the evening).