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When you or someone you love faces serious criminal charges, the lawyer you select to defend you will have a major impact on how your case is resolved. For years, the lawyers of O'Brien Hatfield have helped people throughout Florida and the United States achieve positive results in the face of serious criminal charges. Our lawyers take on the toughest cases, including white collar crime charges and drug charges, at the state and federal level. We also represent clients in post-conviction matters.
I had an excellent experience working with O'Brien Hatfield. From the beginning, the firm was professional, responsive, and extremely knowledgeable. They took the time to explain the process clearly, kept me informed throughout my case, and made a difficult situation far less overwhelming.
Mark O’Brien and his team treated me with respect and gave my case the attention it deserved. Their experience, preparation, and communication stood out immediately, and I always felt like I had strong representation in my corner.
I would highly recommend this firm to anyone looking for serious, professional legal representation.
TK
Tino Konstantinou
May 3, 2026
5.0
I had an excellent experience working with this legal team during my criminal defense case. From the very beginning, everyone at the firm treated me like family while still maintaining a high level of professionalism throughout the entire process. I strongly recommend this law firm because they truly care about their clients and they are true legal experts with many years of experience. When you are facing criminal charges the most important thing at that time is to know that you are not alone and you have a highly skilled criminal defense attorney fighting for you.
Mark O'Brien and his expert legal team have been there for me since day one. I received the best possible outcome, which is one more reason why I strongly recommend this law firm. Please, listen to what they tell you and let them handle your case. They are highly skilled legal experts and professionals. They will fight for you from day one, keep you informed and be there for you. They genuinely care about their clients. Furthermore, they always answered the phone and responded to my emails no matter when I made an inquiry or had a question. Day or night. This legal team is very attentive, which is extremely important when you are facing criminal charges and every minute counts.
A big thank you to the whole legal team at O'Brien Hatfield! You were there for me when I needed you the most. Because of you, I was able to put my legal troubles behind me and move on with my life.
JJ
Jacob Johns
Apr 21, 2026
5.0
After coming home from a grueling 12 hour night shift i was placed into handcuffs for a 3rd degree felony and met with my first ever real encounter in the justice system.
I was scared, confused, anxious, hopeless. I am very young, and i was facing career ending charges that would have changed the course of my life for the worst. These charges would definitely remove any professional license’s i hold.
After interviewing multiple law firms, Mark O Brian stood out the most, i felt something different in the consultation that i didn’t see in other attorneys i consulted with.
Thank the lord i went with this law firm. Jeanette first gave me reassurance that this law firm is going to take care of me. She was sharp, to the point, reassuring, and wasn’t afraid to go out of her way to talk to me whenever i needed it. Next i spoke to Sheryl which was the attorney handling my case. She was calm, professional, and reassuring. The first time i talked to her, i could tell i was in good hands. All of a sudden, i wasn’t feeling so hopeless anymore.
In under 30 days, my charges were dismissed. I was facing up to 5 years in prison but to this law firm it was a walk in the park.
It’s crazy, because i was fully convinced my life was changed for the worst, but because i hired this law firm i can persue my dreams of becoming a physician. There are no words that could express my gratitude towards everyone that worked on my case.
MB
Matthew Buckingham
Mar 10, 2026
5.0
I cannot recommend Sheryl Johansen at O’Brien Hatfield highly enough. From the very beginning, Sheryl was incredibly professional, knowledgeable, and genuinely committed to helping me through my case. She took the time to carefully explain every step of the process, answered all of my questions with patience, and made sure I always felt informed and confident about what was happening.
What truly sets Sheryl apart is her expertise and attention to detail. She clearly knows the law inside and out, and her strategic approach made a huge difference in my case. Because of her skill, dedication, and hard work, we were able to win.
If you’re looking for an attorney who is not only highly competent but also truly cares about her clients and their outcomes, Sheryl Johansen is the one you want on your side. I’m extremely grateful for everything she did and would recommend her without hesitation.
SL
Servando Lopez
Feb 25, 2026
5.0
I recently had some legal questions and concerns. After contemplating making the call I went forth and did so , speaking with Jeanette. I found her to be most friendly, professional ,helpful and knowledgeable. She made me feel comfortable and put me at ease with my present situation. I feel that she should definitely be recognized by her superiors as an asset to the O'brien Hatfield firm. Thanks again for your help Jeanette!
O'Brien Hatfield is open 24 hours a day, 7 days a week, and also available by appointment with calls answered 24/7.
Where is O'Brien Hatfield located?
O'Brien Hatfield is located at 511 West Bay Street, Suite 330, Tampa, FL 33606, USA.
What types of cases does O'Brien Hatfield handle?
O'Brien Hatfield handles serious criminal charges including white collar crimes, drug charges at both state and federal level, and post-conviction matters.
How can I contact O'Brien Hatfield?
You can reach O'Brien Hatfield by phone at +1 813-440-2347 or visit their website at https://www.markjobrien.com/.
What payment options are accepted by O'Brien Hatfield?
O'Brien Hatfield accepts American Express, Cash, Check, Discover, MasterCard, and Visa.
Does O'Brien Hatfield provide appointments outside regular hours?
Yes, O'Brien Hatfield is also available by appointment and answers calls 24/7.
Which nearby legal service providers are located near O'Brien Hatfield?
Nearby legal service providers include All Family Law Group, Law Offices of Joseph Vecchioli, RTB Law & Title, P.A., O’Brien Hatfield Reese, PA, Donald C. Barrett, P.A., Wagner, McLaughlin & Whittemore, and Barnett Bolt Kirkwood Long Koche and Foster.
Are there any nearby financial service providers near O'Brien Hatfield?
Yes, nearby financial services include Hoerber Tillman & Company (accounting), AGW Capital Advisors (investing), Prove Wealth Advisors (financial advising), and The Bank of Tampa.
What nearby services can clients use for investigations or legal support?
Clients can access Hawk Private Investigations of Florida, Inc. for private investigation services close to O'Brien Hatfield.
What is the website address for making appointments or contacting O'Brien Hatfield?
Appointments and contact inquiries can be made through https://www.markjobrien.com/contact-us/ on their official website.
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