Our Team

Dr. Juan Pablo (J.P.) Nieto MD

Dr. Juan Pablo (J.P.) Nieto is a board-certified MD who specializes in sports medicine, musculoskeletal injuries, and chronic joint pain. He believes in building strong patient relationships, providing novel treatments, and doing whatever it takes to help patients return to their very best physical forms.

Dr. Nieto completed his undergraduate studies at Nova Southeastern University and received his Doctor of Medicine from San Juan Bautista School of Medicine. He then completed his residency in emergency medicine in New York City, where he was selected for the “Emergency Medicine Resident of the Year” award.

Dr. J.P. Nieto is a board certified physician who specialized in treating orthopedic and sports related injuries at Atlanta Men's Clinic.

After completing his residency, Dr. Nieto entered the sports medicine field to work directly with athletes and invest in their ongoing progress throughout healing. He completed his sports medicine training with Georgetown University, and has since worked with world-class athletes across multiple sports, including NBA athletes for the Washington Wizards, WWE and UFC fighters, and Brazilian Jiu-Jitsu practitioners.

In addition to his work with Atlanta Men’s Clinic, Dr. Nieto also serves as the Orthopedic Medicine Director for Springs Rejuvenation. He is especially skilled in novel ultrasound techniques, which help diagnose and treat a variety of orthopedic injuries. He’s well-versed in diagnostic ultrasound exams, joint and tendon injections, prolotherapy, and other cutting-edge treatments that don’t require surgical intervention such as regenerative medicine and stem cell therapy.

Dr. Nieto is fluent in English and Spanish. Outside of work, he enjoys spending time with his wife and three young kids and playing soccer and tennis.

Men’s and Women’s Health Specialist

Alyssa Shaffer FNP-C

Alyssa Shaffer is a dedicated nurse practitioner driven by a passion for patient care, innovation, and continuous improvement.  She brings 9 years of experience in the healthcare industry, deeply committed to improving patient outcomes and driving innovation in healthcare delivery. Her journey into this field was inspired by a desire to make a tangible difference in people’s lives, fueled by a fascination with the intricate workings of the human body and a passion for problem-solving.

Alyssa holds a Master of Science in Nursing from South University, where she received rigorous training and developed a solid foundation in healthcare principles. She remains dedicated to ongoing professional development, staying abreast of the latest medical advancements and best practices shaping the industry.

Alyssa’s professional strengths encompass a blend of clinical expertise, analytical acumen, and effective communication skills. These attributes enable Alyssa to navigate complex healthcare environments with ease, collaborate effectively with multidisciplinary teams, and provide clear, actionable knowledge to patients and colleagues.

Her dedication to excellence and her innovative approach set her apart in the medical field. She thrives in dynamic settings where she can integrate clinical knowledge with technological advancements, always looking for new ways to enhance healthcare delivery and create a better patient experience.

Outside of work, Alyssa is passionate about fitness, biking, paddleboarding, kayaking, traveling, exploring, and spending time with her family.

Practice Manager

Diana Reeder

Diana Reeder is the Practice Manager here at Atlanta Men’s Clinic. She’s been in the healthcare administration industry for almost two decades, leveraging her unwavering devotion to patient success and satisfaction.

Diana was initially drawn to the healthcare space at age 16 when her mother passed away. Ever since, she’s made it her mission to support patients’ health and well-being through education and administrative support. In pursuit of that aim, Diana completed her education at the University of Northwestern Ohio, earning a Bachelor of Science degree in Healthcare Administration.

Diana Reeder is the practice administrator at Atlanta Men's Clinic

Diana takes pride in building relationships with our patients, getting to the bottom of their concerns so we can provide the best possible care. She is well-versed in the full spectrum of treatment offerings here at Atlanta Men’s Clinic, and she’s an incredible asset to our team and our patients. Outside of the healthcare space, Diana is passionate about football and spending time with family.

Registered Nurse

Nikki Newell

Nikki Newell is a Registered Nurse at Atlanta Men’s Clinic. After working in Health Information Management for over 20 years, she decided to pursue the clinical side of healthcare and became an RN.

In Health Information Management, Nikki worked alongside countless nurses over the years, but one left a lasting impression. When Nikki had her first child, the nurse that stood by her side inspired her to become the same helpful, calming presence for her own patients. So, she went back to school to pursue nursing full-time.

Nikki Newell is a registered nurse at our Atlanta Men's Clinic, Suwanee location.

Before joining Atlanta Men’s Clinic, Nikki completed her training within the Emergency Department and Interventional Radiology Department of Northside Hospital. Today, she loves educating patients in order to make a positive impact on their lives. She serves our patients with empathy and kindness, truly listening to their concerns to provide tailored care.

Nikki holds a Bachelor of Science degree in Nursing, a Registered Nursing License, a Bachelor of Science degree in Health Information Management, and credentials as a Registered Health Information Administrator and Certified Professional Coder. Outside of work, Nikki enjoys baking, cycling, and spending time with her husband and two kids.

What Patients Are Saying

Professional, fun and courteous, I’m happy to have found them.

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