Marco is the hospital's pharmacist. He is played by actor Marco Pelaez. He has appeared in six episodes, always in the hospital's pharmacy next to the clinic.
In Occam's Razor, he shows great annoyance while House searches his stock of Colchicine.
In Detox, House gets mad at him when the hospital's supply of Vicodin has been mis-shipped.
In Love Hurts, he has to inform House that the pharmacy supplier has mis-shipped the hospital's supply of Vicodin.
We learn his first name in Whac-A-Mole when Wilson screams at him for not authorising his patients' prescriptions - it emerges that his DEA number has been suspended as part of Tritter's investigation.
In Merry Little Christmas, he has to suffer House's wrath of being cut off a floating prescription.
Appearances[]
| Season 1 | |||||
| #01 | "Pilot" | #09 | "DNR" | #17 | "Role Model" |
| #02 | "Paternity" | #10 | "Histories" | #18 | "Babies & Bathwater" |
| #03 | "Occam's Razor" | #11 | "Detox" | #19 | "Kids" |
| #04 | "Maternity" | #12 | "Sports Medicine" | #20 | "Love Hurts" |
| #05 | "Damned If You Do" | #13 | "Cursed" | #21 | "Three Stories" |
| #06 | "The Socratic Method" | #14 | "Control" | #22 | "Honeymoon" |
| #07 | "Fidelity" | #15 | "Mob Rules" | ||
| #08 | "Poison" | #16 | "Heavy" | ||
| Season 3 | |||||
| #01 | "Meaning" | #09 | "Finding Judas" | #17 | "Fetal Position" |
| #02 | "Cane & Able" | #10 | "Merry Little Christmas" | #18 | "Airborne" |
| #03 | "Informed Consent" | #11 | "Words and Deeds" | #19 | "Act Your Age" |
| #04 | "Lines in the Sand" | #12 | "One Day, One Room" | #20 | "House Training" |
| #05 | "Fools for Love" | #13 | "Needle in a Haystack" | #21 | "Family" |
| #06 | "Que Será Será" | #14 | "Insensitive" | #22 | "Resignation" |
| #07 | "Son of Coma Guy" | #15 | "Half-Wit" | #23 | "The Jerk" |
| #08 | "Whac-A-Mole" | #16 | "Top Secret" | #24 | "Human Error" |