OUR PROVIDERS
Our Practice
Our surgeons are all highly trained and board certified by the American Board of Orthopaedic Surgery. They treat all extremity problems and are a referral center for complex problems. All treatments are performed according to evidenced based medicine clinical practice guidelines. We do not recommend a treatment unless there is a solid proven clinical benefit for our patients.
Our Staff
Jennifer L. Cook, M.D.
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Undergraduate Education
- University of Michigan, Ann Arbor, MI
- Mechanical Engineering Degree - Summa Cum Laude
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Medical School
- Harvard Medical School/M.I.T., Boston, MA
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Orthopaedic Residency
- Harvard Combined Orthopaedic Program, Boston, MA
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Fellowship
- Joint Reconstruction and Sports Medicine, Insall Scott Kelly, New York, NY
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Board Certification
- Orthopaedic Surgery
About Dr. Cook
Dr. Cook joined our practice in August 2006, and since her start has performed over 5700 surgeries. She completed a fellowship in adult reconstruction and sports medicine at the Insall Scott Kelly Institute in New York City. Dr. Cook is a member of the American Association of Hip and Knee Surgeons and she specializes in minimally invasive surgery. She is also a member of the Arthroscopy Association of North America. She currently serves as the medical director of the brand new ambulatory surgery center, Comprehensive Outpatient Joint and Spine Institute in Odessa.
Dr. Cook has an avid interest in volunteerism and has been involved with the Good Samaritan Clinic of Pasco for over six years and currently is in her third year as Board Chair. The clinic provides free health and dental services to Pasco county residents.
Dr. Cook has been involved with the Perry Initiative for over a decade. This is an annual program for local high school girls to spend a day with hands on training in engineering and orthopaedics. The lab gives these young women an opportunity to practice suturing and perform surgeries on bone models.
She co-founded the charity organization WOGO (Women Orthopaedist Global Outreach www.wogo.org).
Dr. Cook’s areas of expertise include: primary knee, hip, shoulder, and reverse shoulder replacements, revision knee and shoulder replacements, arthroscopy of the knee and shoulder, ligament reconstruction including primary and revision ACL reconstruction, primary and revision rotator cuff and labral repairs, instability surgery for the knee and shoulder, and fracture management. She also performs surgery for metastatic bone lesions. She treats all ages and can treat most pediatric orthopaedic injuries. She has published numerous articles in peer reviewed journals.
Stephen A. Hanff, M.D.
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Undergraduate Education
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University of Miami, Miami, FL - Cum Laude with Honors
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Medical School
- University of Miami, Miami, FL - Alpha Omega Alpha
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Orthopaedic Residency
- University of Florida, Gainesville, FL
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Fellowship
- Adult Reconstruction, Florida Joint Replacement Center’s Henry W. Hanff, MD Fellowship, New Port Richey, FL
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Board Certification
- Orthopaedic Surgery
About Dr. Hanff
Dr. Hanff has been practicing with the group since 2009. He attended both college and medical school at the University of Miami and completed his orthopaedic residency training at the University of Florida in Gainesville.
He delivers state of the art orthopaedic care to all ages from the young to the geriatric, with expertise in fracture care and fixation, hip, knee and shoulder replacement, revision hip and knee replacement, sports medicine, arthroscopy of the knee and shoulder, and reconstruction and fixation of bone with metastatic cancer. He has also pioneered direct anterior hip replacement technology using a muscle sparing approach and the Hana table at the Medical Center of Trinity.
He is the proud father of three children and looks forward to a lifetime of serving his community where he and his family can grow together. Having been born in the original Community Hospital of New Port Richey, he looks forward to bringing up a new generation in the most beautiful part of Florida we call home.
Dr. Hanff is the recipient of the Physician of the Year awarded by the Medical Center of Trinity in 2016. This recognition has inspired him to continue offering the best care possible to his patients and to treat every individual as family.
Aaron K. Mates, M.D., M.S.
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Undergraduate
- University of South Alabama, Bachelor of Science in Biomedical Sciences
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Masters
- University of South Alabama
- Master of Science in Biology with Thesis in Microbiology
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Medical School
- University of South Alabama
- M.D. with Research Honors
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Residency
- University of South Alabama
Orthopaedic Surgery Internship & Residency
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Fellowship
- Andrews Institute, Gulf Breeze, FL
Foot and Ankle Fellowship
About Dr. Mates
Dr. Mates brings a new dimension of care to the community by addressing a variety of foot and ankle disorders. Under the mentorship of expert surgeons at the Andrews Institute—as well as team physicians for college and professional sports—Dr. Mates developed sophisticated orthopaedic techniques in foot and ankle surgery. He has specialized training in all foot and ankle disorders and sports injuries and brings a fresh perspective with a focus on prevention, rehabilitation, and enabling athletic performance at any age.
The cornerstone of his training is restoring function and decreasing pain. “My primary treatment goal is getting you back in the game pain-free—whether it is running, golfing, or gardening,” says Dr. Mates.
Often this can be accomplished with multiple modalities that can be performed in the patient’s living room with nothing more than a towel and a water bottle. For more severe disorders or injuries requiring structured programs, physical therapy or even surgery will be explored. According to Dr. Mates, “athletes that require tendon and ligament repair or reconstruction, even cartilage restoration, can get back to what they enjoy—and we’ll guide you every step of the way.”
At Florida Joint Care Institute Dr. Mates treats a wide spectrum of pathology from the knee to the toes such as conditions like arthritis, malalignment, flat foot, nerve disorders, bunions, and hammer toes, to name a few. "The foot and ankle are very complex structures," says Dr. Mates, “so we begin with determining the correct diagnosis with exam, history and imaging. By doing this we avoid months to years of wasted time and money in boots, braces and inserts with no relief.” As a medical doctor and orthopaedic surgeon, Dr. Mates provides quality, patient-focused care by using evidence-based, peer-reviewed medicine. This means the treatment protocols are backed up with expert data and time-tested results from the orthopedic literature.
To maximize the comfort and convenience of the patient virtually every procedure Dr. Mates performs is in an outpatient setting. He understands time is valuable, and he makes it a point to explain the diagnosis and treatment options to each individual patient's satisfaction.
John B. Fuller, M.D.
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Undergraduate
- University of Florida, Bachelor of Science in Integrative Biology- Summa Cum Laude
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Medical School
- University of Central Florida College of Medicine
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Residency
- William Beaumont Army Medical Center/Texas Tech University Health Sciences Center Orthopaedic Surgery Program
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Fellowship
- University of New Mexico Hand Fellowship Program
About Dr. Fuller
Dr. Fuller has joined Florida Joint Care Institute as our upper extremity and hand orthopaedic surgeon. His expertise with hand, wrist, forearm, and elbow conditions will allow our patients to receive more specialized care.
Dr. Fuller is an avid outdoorsman: he previously served as the president of the Wilderness Medicine Society, enjoys gardening/growing his own food, spends time camping, and earned the rank of Eagle Scout. He is also trained in martial arts as a second-degree black belt in Taekwondo. His creative outlets include leatherworking, sculpting clay, and hand sewing/beading. When not attending to his medical responsibilities, he enjoys spending time with his wife Lindsey, son Elijah, and baby daughter Imogene.
Thomas Koehler, PA-C
Thomas graduated from the Florida State University with a Bachelor of Science degree in Athletic Training in 2009. Several years later he graduated from Barry University Physician Assistant Program with a Master of Clinical Medical Sciences in 2014 and has been employed with FJCI since this time. Most of his experiences are associated with orthopaedics and sports medicine. He primarily has resided in the Tampa Bay area and enjoys sports and playing golf.
Emily Mangel, PA-C
I was born and raised in Tampa and completed my bachelor’s degree as well as my physician assistant training at the University of Florida in Gainesville. I have been practicing orthopaedics with Dr. Stephen Hanff since 2010. When not at work, I enjoy spending time with my husband and our 2 children. I am a huge football fan and love the Florida Gators and Tampa Bay Buccaneers!
Isabel Dennis, PA-C
I completed my undergraduate degree at The University of Central Florida. Go Knights! Following, I earned my master’s degree at Barry University Physician Assistant Program. I have been in the Tampa Bay area for the past 5 years and really enjoy it here. When I’m not at work I’m visiting family, hanging out with my Rottweiler Bear, cooking something new, or catching a Dunedin Causeway sunset.
Diana, MA
Diana joined our team in 2012, while Dr. Henry Hanff was still practicing. She enjoys music, campfires, and the beach. Diana is a Libra.
Rebecca, MA
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Catherine, MA
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Patty, MA
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Bryanna, MA
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Vandana Patel, PT
Jeffery Balogh, PT
Esther Rodriguez, PTA
Rachel S. Dhani, M.D.
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Undergraduate
- University of Florida, Bachelor of Science in Biology- Cum Laude, Dean's List
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Medical School
- University of Florida College of Medicine
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Residency
- Bayfront Family Medicine Residency, St. Petersburg, FL
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Fellowship
- University of South Florida, Primary Care Sports Medicine Fellowship
About Dr. Dhani
Florida Joint Care Institute welcomes Rachel Dhani, M.D. As a non-operative orthopaedic sports medicine physician, she now provides exceptional orthopaedic care to our community with extended after hours. Her specialty includes the evaluation and nonoperative management of common musculoskeletal injuries, x-ray evaluation, ultrasound guided injections, fracture care, with bracing and physical therapy resources on site. With hours extended until 8 PM, this provides a great opportunity for working individuals to still seek care for their musculoskeletal problems. For those injuries and ailments requiring surgical intervention, our team of four orthopaedic surgeons remain available for urgent follow-up consultation. We welcome Dr. Dhani to the team and look forward to expanding our abilities to best address the functional needs of those in our community.