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Ms. Mastellone is an incredibly passionate and experienced criminal defense attorney who handles criminal, juvenile, DWI, and Municipal Court matters. She has dedicated her practice to litigation and trial work, through which she has achieved great results for her clients. She has defended clients on a myriad of charges including, but not limited to, murder, robbery, burglary, assault, drug possession and distribution, gun possession, shoplifting, theft, sexual assault, DWI, traffic tickets, and juvenile delinquency matters. Ms. Mastellone has been a member of the Ocean County Bar Association, New Jersey Association for Criminal Defense Lawyers, and the National Association for Criminal Defense Lawyers.
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Chat withState: New York
Acquired: 2017
No misconduct found
State: New Jersey
Acquired: 2014
No misconduct found
Showing 1 - 4 of 4 client reviews from Avvo
Posted by anonymous | February 9, 2026 | Consulted Attorney
If anyone is watching her in the Caniero trial, you know what a joke she is. She asks the most stupid questions, making no sense at all. I hope she watches herself, which I'm sure she does, and sees how ridiculous she is. And stop with the hair Monika, you look like a high school girl trying to impre...
Posted by james | February 4, 2026 | Consulted Attorney
watched a trial, is this a joke? She asked the most stupid questions, the guy was clearly guilty of killing a child, blood and ballistic evidence, how does she sleep at night? She lost of course
Posted by Gino | December 25, 2020 | Hired Attorney
As someone who spent time in both State and Federal courts, I can tell you there is without question no one I would rather have represent me more than Monika Mastalone. Having had many attorneys over the course of my life, none can compare to the way Ms. Mastalone articulates and understands her clie...
Posted by Madison | August 8, 2020 | Hired Attorney
Ms. Mastellone represented me when I had to go to court for the first time. I was nervous, but she really took the time to counsel me and make sure that I was comfortable and confident with my experience going through the court process. I would highly recommend her to anyone who is in need of excelle...
"I endorse this lawyer. Both Monica and I are members of the executive board of the Municipal Court practice section of the State Bar and has much experience with Superior Court criminal matters. She is one of the rising stars of our profession."
"Monika is an experienced, knowledgeable and effective criminal defense attorney well liked, known and respected in the local Ocean, Monmouth and Mercer legal communities by prosecutors, Judges and fellow defense attorneys such as myself."
"Monika and I have known each other for over twenty years. She was a exceptional student growing up, and one of the most intelligent folks I know. It is with great pleasure that I have the opportunity to endorse her because I often "bounce" legal theories and ideas off of her keen legal mind. She will be highly successful in her practice and I wholeheartedly endorse her."
"I have had the privilege of watching Ms. Mastellone advocate for her clients over the past few years. The one thing that has always stood out is how far above and beyond what is necessary Ms. Mastellone goes to ensure her clients success. From her time at the Public Defender's office buying her client's clothing with her own personal money for trial, to her substantial, thorough and well thought out briefs. Ms. Mastellone will take your issues on as if they are her own. There are few lawyers as passionate, competent, and trial ready as Ms. Mastellone and I would recommend her to my closest of friends."
"Ms. Mastellone is one of the hardest working and passionate criminal defense attorneys I know. I've personally witnessed her achieve phenomenal results for her clients in court. I would highly recommend this attorney."
Family lawyer
Criminal defense lawyer
Immigration lawyer
Litigation lawyer
Criminal defense lawyer
2021 - 2024
Associate Attorney, Law Offices of Robin Kay Lord
2015 - 2020
Assistant Deputy Public Defender, New Jersey Office of the Public Defender
2020 - Present
National Association of Criminal Defense Lawyers
2020 - Present
New Jersey Association of Criminal Defense LawyersMember
2020 - Present
New Jersey State Bar AssociationMember
2014
JD - Juris Doctor
2011
BS - Bachelor of Science
2014
2013
English
Legal Answers
If I get arrested and brought to the station for processing, and the detective wants to question me there do I have too?
21 Feb 2021
Can I refuse police questioning by a detective after I'm arrested? Criminal law.
21 Feb 2021
This is unique to a New Jersey PTI matter. Consequently it’s uniquely germane to New Jersey law.
03 Feb 2021