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Mark A. Siesel

Personal injury Attorney at White Plains, NY

5.0   6 reviews
  • State Years
    New York - NY 37 years
    New Jersey - NJ 37 years
  • Licensed for 37 years
    State NY
    Acquired 1987
    Currently Registered No misconduct found
  • Licensed for 37 years
    State NJ
    Acquired 1987
    License Administratively Revoked No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Mark

Learn Mark’s areas of practice.

Practice areas
  1. Criminal defense
    Our firm represents clients charged with felonies, misdemeanors, violations and traffic infractions including DWI, drug possession, assaults, robbery, burglary, possession of stolen property, forgery, harassment, resisting arrest, and more.

    39 years

  2. Personal injury
    Our firm represents clients in wrongful death cases, brain injuries, construction accidents, defective or dangerous products, motor vehicle accidents, motorcycle accidents, truck accidents, slip/trip and fall accidents, medical malpractice, nursing home negligence, dog/animal bite injuries, escalator/elevator accidents, and premises liability

    39 years

  3. DUI and DWI
    Our firm handles a variety of drunk driving offenses including DWI, DWAI, DWIAD (Driving While Ability Impaired By Drugs, Aggravated DWI, Felony/Multiple DWI, Refusal Hearings, Administrative Hearings at DMV, and Hardship Hearings.

    39 years

  4. Animal and dog bites


The Law Office of Mark A. Siesel
44 Church Street
Suite 150
White Plains, NY, 10601

Personal Injury lawyers nearby


5.0 / 5.0
  6 customer reviews
5 Star
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1 Star
Posted by George Brown | June 12, 2023
This review is from a person who hired this attorney.
| Hired Attorney
Great Experience
Mr. Siesel was referred to me by a friend. He soon became Mark. He answers all my questions and stopped my fears. He was very realistic when he prepared me. His patience and professionalism is unmatched.
Posted by Shana | September 25, 2009
Our own "Cousin Vinny"
My mother had a very difficult personal injury case forcing us to contact numerous attorneys for legal advice. Each one confirmed our case would not be easy and time was our enemy. Mr. Siesel was referred by one of his peers. He said, "Give Mark a call. He likes the tough fights." We were prepared to be rejected once again but felt we had nothing to lose. After our initial phone conversation, he met with us. He seemed energized by the challenge and we felt certain he was the right person to help us. We haven't stopped praising him since. Mr. Siesel is an extremely busy lawyer who made me feel as if my mother was his most important client. He kept us informed every step of the way. He answered and/or returned calls personally. He responded to emails at all hours. We will always be grateful for his effort and commitment. My mother’s case has since been favorably settled. Mark's experience and enthusiasm is clearly impressive... but so is his honesty, approachability, confidence and comical nature. He is the 'Cousin Vinny' to our family. Thank you for everything Mr. Siesel!
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Posted by Lidia | September 18, 2009
A winning attorney by your gurney
Mark Siesel has an excellent work ethic and is full of integrity. His particular eye to detail and his organizational skills are qualities that speak to his volumes of experience. He is very charismatic and personable, both in and out of the courtroom. Mark Siesel is everything a lawyer should be and more. My case from beginning to end took less than 6 months. Mark invested a lot of time and work into having the case be finished in a shorter period of time so as to lessen my stress and anxiety. Mark Siesel took on a very challenging case against a huge cooperation. I had a substantial injury case and it was difficult to prove, but he was never intimidated by the other side. I, as a Nurse with over 30 years of experience, was very impressed with Mark Siesel’s medical knowledge. This is a valuable asset in personal injury cases as well as malpractice cases. Before I met Mark, I had no hope in prevailing. Mark broke the case down into steps that I easily understood. He did not waver, he was relentless and persevered. He was committed to my case as if it were his only case, even though I knew he had many other important cases. Mark always made time for me and I never felt embarrassed to ask a question. He held my hand every step of the way. He took the case on a personal level and treated me with respect and as a team member. He answered all of my calls promptly and appraised me of every step in the case. Mark is extremely compassionate towards his clients. You can tell that he genuinely pours his heart and soul into your case. His true compassion validated my loss and pain. Mark is very professional and deft at his skills. He alleviated the stress in my situation with his expertise and humor. Mark set precedence in challenging a huge cooperation and winning a substantial award that even surpassed my expectations. I am very grateful to have Mark Siesel as my attorney, who also has become a lifelong dear friend in the process. He is a treasure. If you would like to speak to me please call Lidia at [phone number removed]
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Posted by George P. | September 15, 2009
Appreciative client's review
"Whatever praises I say for Mark would not be enough... Having had a severe no fault accident as a limo driver with injury to myself and substantial medical bills to pay, I received a claim from one of the clients who was in the car. Long web search led me to Mark. His name stood out. Despite the fact I currently live many hours away from NYC, he managed the case as if he was next door. All calls and emails were answered promptly. I was diligently updated on the case. He has done an excellent job dealing with insurance company to settle the case in a timely fashion. He is very approachable, dependable, and knowledgeable. I am so grateful to Mark and would highly recommend him to anyone who needs professional help and humane attitude. It is so great to know in time of stress and worry someone is there for you. THANK YOU, Mark!!!" G.P., former client
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Posted by Linda B. | August 25, 2009
Appreciative client's review
I was so lucky Mark was recommended to me by an acquaintance. He handled my personal injury claim and protected me from the ordeal I would have faced on my own. He is honest and trustworthy. He watched out for my interests every step of the way and did a terrific job representing me. It pleases me to have this opportunity to praise Mark Siesel in this forum.
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Posted by Dave | August 25, 2009
Mark Siesel Review
I used Mark for a personal injury case that I had from a car accident. Mark was on top of everything, kept me well informed as to the progress of the case, and made the entire process as simple as possible for me. If Mark wasn't available when I called, he was always quick to return my call as soon as he got the message. Mark is a hardworking, honest, down to earth guy who was a pleasure to work with. I highly recommend him.
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AVVO RATING 8.1 (Excellent)

Work Experience

  • Principal
  • The Law Office of Mark A. Siesel
  • 1999 - Present


  • Brooklyn Law School
  • JD - Juris Doctor
  • 1986
  • State University Of New York at Stony Brook
  • BA - Bachelor of Arts
  • 1981


  • Westchester County Bar Association
  • Member
  • 1999 - 1999
  • American Trial Lawyers Association
  • Member
  • 1993 - 1993
  • New York State Trial Lawyers Association
  • Member
  • 1990 - 1990
  • New York State Bar Association
  • Member
  • 1986 - 1986
View all associations

Attorney endorsements

Received (8)
Given (5)
Endorse Mark
Personal injury Attorney | Sep 27
Relationship: Fellow lawyer in community
"Mark is a colleague attorney respected and feared by all. Mark has handled matters for me and he always gets great results. Keep up the good work."
Personal injury Attorney | Sep 14
Relationship: Fellow lawyer in community
"Mark Siesel is a lawyer to whom our firm has referred many cases. We have total confidence in his competence and integrity. He deserves the highest rating and we endorse him wholeheartedly."
Personal injury Attorney | Sep 11
Relationship: Fellow lawyer in community
"Mark is a top notch attorney. He has succeeded in cases where other attorneys have failed. Time and time again, he has obtained significant recoveries for his injured clients. As such, he has gained both the respect of the Judges and attorneys he comes in contact with. I have witnessed his skills in and out of court. I highly recommend his work."
Personal injury Attorney | Aug 29
Relationship: Worked together on matter
"I endorse this lawyer. I was fortunate when a trusted colleague gave me Mark's name when I needed to refer a complicated personal injury matter. His knowledge, expertise and total preparedness resulted in an extremely favorable resolution for my client. Thank you, Mark!"
Litigation Attorney | Oct 10
Relationship: Fellow lawyer in community
"I have known Mark for approximately eight years in both a personal and professional capacity, and consider him to be an excellent attorney and a caring individual. Mark has the knowledge, skills, and experience to handle a diverse range of leagl issues, while at the same time maintaining a good relationship with his clients by keeping them well informed. As a fellow attorney practing law in the same community as Mark, I endorse him without hesitation."
Personal injury Attorney | Oct 09
Relationship: Fellow lawyer in community
"Mark is an excellent attorney. He has done significant work for my law firm and we continue to hire him because of his superb skills. Mark is a terrific trial attorney obtaining great results in difficult cases. I highly recommend him. Diane Miceli"
Personal injury Attorney | Aug 28
Relationship: Worked together on matter
"I have referred a very serious case to Mr. Siesel and he has conducted himself in the most professional way, exhibiting keen legal reasoning and a genuine empathy for our injured client. He is a caring and competent man."
Personal injury Attorney | Aug 25
Relationship: Fellow lawyer in community
"I endorse this lawyer's work. I have known Mark since law school and know him to be a lawyer of exceptional skill and high ethical standards. I recommend him without any reservations."
View more endorsements
Criminal defense
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Personal injury
Personal injury
White Plains Personal injury Lawyer Mark A. Siesel
Mark A. Siesel
Personal injury Attorney
White Plains, NY
Licensed for 37 years