Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_73968 ( "No." real, "#" real, "Title" text, "Directed by" text, "Written by" text, "Patient Portrayer" text, "Original air date" text, "Production code" text )

### Question ###
What is the total number of patient portayers for the episode directed by Craig Zisk and written by Brad Falchuk?

### Accurate SQL ###

SELECT COUNT("Patient Portrayer") FROM table_73968 WHERE "Directed by" = 'Craig Zisk' AND "Written by" = 'Brad Falchuk'