|Main Character: New York|
|Family||Two unnamed daughters|
|Job||Medical Examiner (Secretly: The Guardian Angel)|
|Portrayed By||Robert Joy|
|First Appearance||Dancing with the Fishes|
"For without death, one can't appreciate life"
Dr. Sid Hammerback is a medical examiner on CSI: NY.
Sid is described as an "off-the-charts genius" who only recently traded in a career as a chef to become a medical examiner. He has a habit of over talking and over sharing, which former ME Sheldon Hawkes refers to as "going to that creepy place." Despite any eccentricities on his part, Sid is extremely perceptive and sincerely cares for the well-being of his coworkers (he invites Mac Taylor to his family's Thanksgiving festivities so Mac would not have to spend the holiday alone).
Sid nearly dies from a severe allergic reaction to a meatball gyro he ate in The Ride-In and is saved by the timely intervention of Stella Bonasera. Sid has been divorced at least once (Hung Out to Dry), possibly twice (Damned If You Do), and has two daughters, one of whom is in college (episode 3.02, Not What It Looks Like).
In (Page Turner) he almost dies of radiation poisoning from a victim in the morgue.
In Command+P, when Jo discovers Sid is the Guardian Angel, giving 1 million bucks each to 10 random strangers, he confesses that he has cancer and tells her to keep his identity, and his condition, a secret.
- Sid wears a signature pair of glasses that are detachable at the nose piece. This allows him to quickly remove them and reattach them at his neckline.
- Sid's favorite Woody Allen movie is Manhattan. (Reignited)
- He is named after his deceased mother and is the only person in New York City with that name. (My Name is Mac Taylor)