Mark W. Chauppetta, President

Massachusetts PI License # LP0138I

Mark W. Chauppetta is a prominent and highly sought after Private Investigator known for his tireless work ethic and relentless efforts. He is licensed in Massachusetts although performs investigative services throughout the United States and internationally. Mark is also no stranger to the media appearing in countless magazines and media outlets, including Boston Herald, Boston Globe, Boston Magazine, Village Voice, and the Boston Phoenix. He has written a satire book on Cheating, appeared on the Howard Stern Show, WCVB’s Chronicle, A&E, Fox Nation and many news outlets nationwide. 

Mark has been a Private Investigator for over 30 years starting his career in Los Angeles while working as a struggling actor. Prior to obtaining his professional investigative license he was a Commonwealth of Massachusetts Corrections Officer and a Plymouth County Deputy Sheriff serving warrants. Mark is also an avid practitioner of Brazilian Jiu Jitsu and is a retired professional MMA fighter. Lastly and most importantly, Mark is the former executive director of the Wheelchair Strong Foundation, but continues to advocate for his twin sons who live with Duchenne Muscular Dystrophy.


Attorney – Brockton, Ma

Mark has been my go to guy on my criminal defense investigations for over 15 years, there is no one better.

Nancy – Boston, Ma

Warm and friendly during what was a difficult time uncovering the evidence of infidelity I needed for my own well being.

Attorney- Braintree, Ma

Mark at On the Mark Investigations is a great family man and understands how to handle a sensitive issue when it comes to infidelity.

Business Owner – Dorchester, Ma

I was told an employee was really injured by my insurance company and that I should settle, but my gut told me otherwise. I was given Mark’s name and once a week later he provided me with video documentation that proved I was right all along.

Mom – Ruth – Cape Cod

When Mark told me that he was adopted I knew he was the right person to help me find my long lost son back in 2001. Thank you Mark Happy

Chris – Boston, Ma Staff & Consultant Bios

I use Mark for all my high risk terminations just in case the situation gets out of hand. Mark is not 6’5 but his knowledge of the martial arts

and ability to talk are second to none.

Priscilla R

Family, can’t live with them, can’t live without them and sometimes…you can’t find them! Ordinary, I would allow my ‘intentionally missing’ brother his space but, my aging father wanted to hear from him. Thankfully, On The Mark was able to find him and I was able to arrange for a phone call between my father and brother. I felt the cost was reasonable and our interactions were always handled in a professional manner. I will be keeping his number in my contacts, just in case I need his assistance again.


Very honest, Mark won’t waste your time and just take your money. He works with 100% integrity.