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John Larsen Mulvihill
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Phone: (727) 471-6131
Cell: (727) 242-0890

407 S Ewing Ave #100
Clearwater, Florida 33756

John Larsen Mulvihill - Avvo 10John Mulvihill started his legal career as a Prosecutor at the Pinellas County State Attorney’s Office. John used this time to develop his courtroom skills by completing over twenty jury trials along with numerous bench trials and evidentiary hearings. While representing the State of Florida in the prosecution of criminal cases, John sharpened his trial skills – from selecting a jury to presenting an effective closing argument and everything in-between.

After serving the residents of the State of Florida, John left the State Attorney’s Office to pursue a career in personal injury litigation. John now dedicates the entirety of his career in the civil sector to representing the injured in all areas of personal injury – from car accidents, motorcycle accidents, bicycle accidents and pedestrian accidents to slip & falls, traumatic brain injuries, and trucking accidents.

Prior to founding Thacker and Mulvihill, PLLC, John worked as an attorney at two of the biggest advertising personal injury law firms in the Tampa Bay Area. While working at these firms John learned all facets of the personal injury litigation field, including help lead the litigation department at one of the firms. John performed countless depositions, mediations, court hearings, and ten jury trials during his tenure at these firms. John then went on to create the personal injury department at the boutique Plaintiff’s firm Corless Barfield Trial Group.

At Thacker and Mulvihill John continues to serve the victims of personal injury accidents throughout the Tampa Bay area and the State of Florida.

John is able to bring a unique and effective form of personal injury litigation. John believes that, Thacker and Mulvihill’s smaller size, but ample resources allow him to provide a personal level of care that is not found at larger advertising firms. These unique circumstances allow John to develop a personal relationship with all of his clients and bring the resources required to fight a large insurance company.

John moved to St. Petersburg in 2001 and immediately fell in love with the Tampa Bay area. As a continued resident of St. Petersburg, he believes it is important to give back to the community you love. John currently volunteers his time through the USF Legal Aid Program and the Hillsborough County Bar Association / Fox 13 Ask-a-Lawyer program.

A graduate with honors (Cum Laude) from Stetson University College of Law, John is the loving father of two young children and an enamored husband. John is an avid swimmer and regularly participates in open water swimming events.


J.D., Stetson University College of Law, 2004
Honors and Activities: Graduate with Honors – Cum Laude, Phi Delta Phi Honor Fraternity 2003-2004

B.A., University of South Alabama, 2001
Honors and Activities: Deans List 1999, 2000; Who’s Who Among University and College Students, Student Government AssociationTreasurer

Jurisdictions Admitted to Practice Florida, 2004
U.S. Federal Court - Middle District of Florida
U.S. Federal Court – Southern District of Florida
Professional & Bar Association Memberships

Hillsborough County Bar Association
Member Since: 2013



Featured Pro Bono Activities

Fox 13 Ask-a-Lawyer

University of South Florida Legal Aid
Provide pro-bono legal advice to students at the University of South Florida

Client Reviews
I cannot express how much I appreciate Attorney Thacker and his professionalism. He handled my case for me and took away so much of the stress of an auto accident making sure I was cared for. At a time like this so much needs to be handled - phone calls, emails, reports - it all gets so overwhelming. I have recommended him to others already even a stranger in the grocery store. Thanks so much Attorney Thacker again for your excellent service you provided me. Marjorie K.
My mother-in-law was injured in a car accident and Attorney Greg Thacker looked after her best interests. His care and concern were evident every step of the way. He made sure she got the best medical care and allowed her to focus on her recovery, while he handled the insurance companies. If you are looking for an attorney who is not only skilled and experienced, but who actually cares deeply for the wells-being of his clients; look no further than Greg Thacker. We recommend him highly! Susie A.
Greg is an amazing advocate for his clients! His knowledge, experience and heart sets him apart from the pack. Highly recommend! Joshua S.
I have known Greg for many years and have even called upon him to represent me. Greg is always prepared, dedicated, aggressive, and responds to his clients when they have questions or need something explained. He is a great lawyer and a compassionate person. I highly recommend Greg, and because my experience has been so positive, I trust Greg as co-counsel with many of my clients. You will not find a better attorney to represent you. Matthew T.