From UCSF Parnassus Campus, by public transit:

Take the N-Judah MUNI Train inbound to Second Street (AT&T Park stop on King Street between Second and Third Streets). Walk along King Street, turn left on Third Street and proceed towards the drawbridge. Turn right off of Third Street to enter the China Basin Landing courtyard above the entrance to the underground parking facility. Enter Lobby 3 from the courtyard and take the elevator to the 4th floor, exit left and proceed to Suite 4603, on the left side of the corridor.

By Car:

The OTM is in the China Basin Landing (CBL) building complex (in the building closest to the water) off of Third Street at King Street (to the right of AT&T Park when facing the front of the Park). You may park under CBL (enter off of Third) for $10-12/day. Parking can also be found in Lot A off of Third Street (behind AT&T Park; left off of Third heading south) for $6/day; park in a numbered spot and feed the machine with a one-dollar bill and a five-dollar bill (or six one-dollar bills). Both parking sites allow for hourly parking as well.
Enter the China Basin Landing building complex via the underground elevators or via the middle courtyard off of Third Street. Enter Lobby 3 from the courtyard and take the elevator to the 4th floor, exit left and proceed to Suite 4603, on the left side of the corridor.

By CalTrain:

Take CalTrain to San Francisco. Walk south on Fourth Street to Berry Street and enter the China Basin Landing building complex via the middle courtyard off of Fourth Street. Enter Lobby 3 from the courtyard and take the elevator to the 4th floor, exit left and proceed to Suite 4603, on the left side of the corridor.