Dr. Luis Alfredo Guerrero, MD
Interventional Pain Management & Musculoskeletal Medicine
Founder & Medical Director – Dr. G Pain & Orthopedics
Dr. Luis Alfredo Guerrero is a highly experienced physician specializing in interventional pain management, musculoskeletal medicine, and minimally invasive procedures designed to restore function and improve quality of life. As the Founder and Medical Director of Dr. G Pain & Orthopedics, Dr. Guerrero is dedicated to providing compassionate, evidence-based care to patients throughout Central Florida. With more than 20 years of clinical experience, Dr. Guerrero combines advanced diagnostic techniques with state-of-the-art treatments to address chronic pain, spine disorders, joint conditions, nerve-related pain, and complex musculoskeletal injuries. His clinical approach prioritizes individualized treatment plans that go beyond symptom relief—focusing on restoring mobility, functionality, and long-term wellness. Dr. Guerrero is skilled in a wide range of interventional procedures, including fluoroscopy-guided spine injections, radiofrequency ablation, peripheral nerve blocks, joint injections, regenerative therapies, and multidisciplinary pain management strategies. He is known for his comprehensive patient evaluations, clear communication, and commitment to delivering high-quality care rooted in precision and compassion. In founding Dr. G Pain & Orthopedics, Dr. Guerrero created a practice centered around patient trust, modern medicine, and collaborative care. Under his leadership, the clinic continues to expand, offering state-of-the-art services and welcoming additional board-certified specialists who share his dedication to excellence. Dr. Guerrero remains deeply committed to serving his community, advancing pain management standards, and empowering patients to return to the activities they value most.
Dr. Ruben Rivera, MD
Double Board-Certified in Physical Medicine & Rehabilitation (PM&R) and Sports Medicine
Interventional Pain Management | Musculoskeletal & Spine Care
Dr. Ruben Rivera is a highly skilled, double board-certified physician specializing in Physical Medicine & Rehabilitation (PM&R) and Sports Medicine, with advanced expertise in interventional pain management, spine disorders, and musculoskeletal rehabilitation. He is committed to delivering precise, minimally invasive treatments that help patients regain movement, reduce pain, and return to the activities that enrich their lives. Dr. Rivera earned his Doctor of Allopathic Medicine (MD) from the Universidad Autónoma de Guadalajara School of Medicine, where he developed a strong foundation in clinical sciences and patient-centered care. He completed his PM&R residency at the Veteran Affairs Hospital in Puerto Rico, gaining extensive experience treating complex neurological, orthopedic, and chronic pain conditions in a multidisciplinary environment. To further advance his skills, Dr. Rivera completed a fellowship at Burke Rehabilitation Hospital in New York, a nationally recognized academic center known for its cutting-edge approach to functional recovery, neurorehabilitation, and orthopedic injury management. His fellowship training emphasized advanced diagnostics, fluoroscopic and ultrasound-guided procedures, biomechanics, and evidence-based rehabilitation strategies. Dr. Rivera’s clinical practice focuses on diagnosing and treating spine, joint, nerve, and sports-related injuries through a comprehensive and conservative-first approach. His expertise includes epidural steroid injections, radiofrequency ablation, peripheral nerve blocks, joint injections, regenerative medicine therapies, and personalized movement-based recovery plans. Patients appreciate Dr. Rivera’s calm, approachable demeanor and his dedication to educating and empowering them throughout their treatment journey. His goal is not only to relieve pain but to restore function, performance, and long-term well-being.
Christopher Register, MSN, APRN, FNP-C
Family Nurse Practitioner | Interventional Pain Management & Orthopedic Care
Christopher Register is an experienced and dedicated Family Nurse Practitioner specializing in interventional pain management, orthopedic care, and chronic disease support. As a key member of the clinical team at DRG Pain & Orthopedics, he is committed to providing high-quality, compassionate care that empowers patients to better understand their conditions and achieve meaningful improvements in daily function and comfort. Christopher earned his Master of Science in Nursing (MSN) and Family Nurse Practitioner certification (FNP-C) with a strong clinical foundation in adult medicine, musculoskeletal health, and procedural care. His background includes extensive hands-on experience in primary care, urgent care, and pain management settings, giving him the ability to assess complex symptoms with precision, communicate clearly with patients, and develop treatment plans tailored to each individual’s needs. At Dr. G Pain & Orthopedics, Christopher plays an essential role in diagnosing and managing spine, joint, and nerve-related conditions. He performs comprehensive evaluations, coordinates interventional procedures, interprets diagnostic imaging, and guides patients through conservative and minimally invasive treatment options. His clinical approach emphasizes patient education, evidence-based medicine, and fostering a supportive environment where patients feel heard and respected. Christopher is known for his approachable demeanor, collaborative communication style, and deep commitment to helping patients regain mobility, reduce pain, and restore their quality of life. His dedication, skill, and genuine compassion make him an invaluable part of the DRG Pain & Orthopedics team.
Christopher Brim, APRN
Advanced Practice Registered Nurse | Interventional Pain Management & Orthopedic Care
Christopher Brim is a skilled and compassionate Advanced Practice Registered Nurse with extensive experience in pain management, orthopedic care, and complex patient assessment. As a valued provider at DRG Pain & Orthopedics, Christopher is committed to delivering high-quality, patient-centered care that focuses on improving function, reducing pain, and helping each patient return to a better quality of life.Christopher’s clinical background includes years of hands-on experience in primary care, urgent care, and musculoskeletal medicine. His training has equipped him with a strong foundation in diagnosing and managing spine, joint, and nerve-related conditions, as well as coordinating conservative and interventional treatment plans. He is known for his thorough evaluations, attention to detail, and ability to communicate clearly with patients about their diagnoses and care options. At Dr. G Pain & Orthopedics, Christopher plays a key role in supporting interventional procedures, reviewing diagnostic imaging, monitoring treatment progress, and ensuring continuity of care across the patient journey. His calm, approachable demeanor helps patients feel comfortable and confident throughout their evaluation and treatment process. Christopher is highly dedicated to evidence-based practice and to building trusted, long-lasting relationships with his patients. His commitment to compassionate care, clinical excellence, and patient advocacy makes him an integral part of the Dr. G Pain & Orthopedics team.