Lawyer, Estate planning attorney, Personal injury attorney, Social security attorney • Jamaica, New York
At the Law Office of Mark. J. Keller, we provide representation and counsel to New Yorkers when they need it most. Whether you are suffering from a medical or psychiatric condition preventing you from working, or you were the victim of an accident with severe injuries caused by the negligence of others, Mark Keller delivers aggressive advocacy so you can continue to provide for your family and concentrate on your health or recovery.
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Mark Keller is an Amazing lawyer. I met him in Feb 2025 and he won my SSI hearing case Sept 2025. He is an experienced, knowledgable, straight forward, empathetic, funny sence of humor & most of all a no nonsense lawyer if he can't do it he will tell you ~ all of which I so appreciated with him representing me. His staff always followed up with me on any questions that I had. If you need a Great lawyer Mark Keller is the lawyer to choose.
Life can be a very scary place if you don't have the right people to lead and guide you. I attempted to apply for disability on my own and it was terrifying. Thank God for the angel that referred me to Mr. Keller. He is GREAT!!!!! He and his staff took control of my attempt and knocked it out of the park. He gave me instructions, I did exactly what he said and we were awarded a fully favorable verdict. Mr Keller is worth his weight in gold and I would refer him in a heartbeat!
I honestly wanted to thank the Law Office of Mark J. Keller publicly helping with SSA. Not only were they very attentive as a team, but Mark himself made sure my partner and I felt as comfortable as possible. We were involved with as much as we needed to be; making it less stressful or worrisome about the process. It's a long and difficult road, but the help from of the Law Office of Mark J. Keller, I felt positive about the outcome. Thank you, kindly!
Mark J Keller and his team are absolutely incredible. I would highly recommend him I wouldn't give him five stars he deserves more. I'd give him a million. He is very patient, compassionate, and very empathetic, very good listener as well. Ultimately, he helped me win my case. Also, his paralegal Kessia is very good, so when he is in court, she is able to help and relay messages and he gets back to you and addresses any issues or concerns Mark Jonathan Keller thank you I'm forever grateful for all your help.
I highly recommend Mark Keller, and his team, to anyone seeking legal representation by both skill and compassion. He was truly empathetic in my son's SSD case while his continued perseverance led to a favorable outcome. Mark Keller's strong suit was his communicative skills, keeping my son informed of the difficult legal process they would both take on together. Mr. Keller possesses a thorough understanding of the law and a natural ability to explain complex issues, clearly and confidently. Thank you, Mark Keller!!
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