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Improving Lives for Physicians and Patients

We envision a system where patients & practitioners are clearly at parity with care, efficacy, and tranquility for the ongoing fulfillment of their specialized needs.

Why Join American Pain Partners

Owning a private practice can be stressful. Juggling the role of office manager, accountant, marketer, recruiter, IT problem-solver, and compliance expert is a recipe for disaster. You became a Pain Physician to treat patients, so why are you spending your time on admin tasks?

APP lets you get back to treating patients without sacrificing the growth of your practice. We provide the resources and support you need to expand your practice sustainably, bridging the gap between solo practice and working in a larger organization.

Serving Practices Since 2021

Join our family of growing practices and like minded individuals who have built a legacy for themselves through years of operation excellence. We welcome practices who are looking for:

  • Operational Freedom
  • Centralized Administrative Support
  • Practice Equity To Drive Growth
  • Access To Industry Leading Services & Tools
  • Learning & Mentorship Opportunities
  • More Personal Time
  • A Shared Financial responsibility

Meet Our Team


Founding Doctor

Dr. Li-Herng (Eric) Liu

Dr. Li-Herng (Eric) Liu, M.D is an ACGME acredited fellowship-trained interventional pain medicine specialist and anesthesiologist. He is board certified in Anesthesiology and Pain Medicine. Dr. Liu is a member of the American Society of Anesthesiologists, International Spine Intervention Society, and the American Society of Interventional Pain Physicians.

Dr. Liu firmly believes in the importance of multi-disciplinary approach with holistic concept to the treatment of acute and chronic pain and is proficient in a wide array of pain treatment modalities, ranging from basic therapies to advanced invasive procedures (injections, radiofrequency ablation and spinal cord stimulation). He educates his patients on all the available treatment options in managing pain and is committed to improving patient's quality of life through personalized care. Most importantly, Dr. Liu cherishes the trust and mutual respect that exist in the patient-physician relationship.

Founding Doctor

Dr. Mitchell Engle

Dr. Engle completed the Medical Scientist Training Program at The University of Iowa Carver College of Medicine which awarded him both an M.D. and a Ph.D. in Pharmacology. It was during his Ph.D. training that he developed a passion for Pain Medicine studying the role of the spinal cord in processing pain related to nerve injuries. He subsequently completed a residency in Anesthesiology at the University of Alabama-Birmingham where he was selected as Chief Resident. Dr. Engle then went on to complete a fellowship in Pain Medicine at the prestigious M.D. Anderson Cancer. After his fellowship, he was asked to stay as an M.D. Anderson Cancer Center faculty, which he did for five years. During his last three years at M.D. Anderson, Dr. Engle served as the Pain Medicine Fellowship Program Director. In this role, he led an elite Pain Medicine Fellowship and developed the nations first year long course in Evidence Based Pain Medicine. Dr. Engle is double board certified in Anesthesiology and Pain Medicine.

Founding Doctor

Dr. Lance LaFleur, M.D.

Dr. J. Lance LaFleur is a fellowship-trained, interventional pain physician who is board-certified in both anesthesiology and pain medicine by the American Board of Anesthesiology. He is also a musculoskeletal and regenerative medicine specialist certified by the Interventional Orthobiologics Foundation.

Dr. LaFleur obtained his Bachelor of Science in neuroscience from Tulane University where he graduated magna cum laude with departmental honors and thesis. He then completed a four-year MD/MBA program in health organization management at Texas Tech University School of Medicine. Dr. LaFleur then moved to Houston where he completed both his transitional internship and anesthesiology residency at The University of Texas Medical School. During this time, he trained at some of the nation’s top institutions including M.D. Anderson Cancer Center, Houston Methodist Hospital, Texas Heart Institute, and Memorial Hermann Hospital – Texas Medical Center. He decided to subspecialize in interventional pain medicine, and he completed a fellowship at Virginia Mason Medical Center in Seattle which is a national leader in the fields of regional anesthesia and pain medicine.

While Dr. LaFleur enjoys helping patients with a wide variety of symptoms, he is interested in cancer pain, post-laminectomy syndrome, and complex regional pain syndrome. He has presented his research at the American Society of Anesthesiologists Annual Meeting, published clinical studies in peer-reviewed journals, authored several book chapters, and served as a faculty instructor at both neurostimulation and ultrasound-guided regional anesthesia workshops. He is an active member of several organizations including the American Society of Interventional Pain Physicians, American Society of Regional Anesthesia and Pain Medicine, Texas Pain Society, and Interventional Orthobiologics Foundation.

Founding Doctor

Dr. Eduardo Garcia, M.D.

Eduardo Garcia, M.D. completed his bachelor’s degree in Biology at Texas A&M University, and Medical Degree and residency at Baylor College of Medicine in Houston, Texas. Over his extensive career, Dr. Garcia has not only dedicated his time to treating patients, but he also serves as a clinical assistant professor for the Department of Anesthesiology at the University of Texas Medical Branch (UTMB) in Galveston, Texas where he won the Top Doc Award for Physician Educator.

Dr. Garcia is a cofounder of Space City Pain Specialists. He has served as the president of the Houston Chapter of the Texas Pain Society, been published, been involved in several extensive research studies, and was a physician advisor for the Texas Association of Physician Assistants Society.

Partner Doctor

Dr. Daniel Dat Nguyen

Dr. Daniel Dat Nguyen is the newest ACGME accredited member of the Institute of Precision Pain Medicine team and main physician at our Baytown, TX location. He treats with a well-rounded philosophy which encompasses Osteopathic Medicine, Physical Medicine & Rehabilitation (PM&R), and interventional chronic pain management. Quality of life through improvement of the mind, body, and spirit is a core principle that guides the way he treats.

Dr. Nguyen began his medical training at the Philadelphia College of Osteopathic Medicine where he was chosen to be an undergraduate fellow to teach Osteopathic manipulation techniques and principles to the student physicians. After completing an internship at Mercy Catholic Medical Center in Pennsylvania he traveled down to the great state of Texas to further his education in residency at the Baylor College of Medicine PM&R program. There he was able to train with great mentors to care for patients with musculoskeletal, neuromuscular, spinal cord, and brain injuries. He took care of many of these patients at the Texas Institute of Rehabilitation and Research (TIRR) which was recently deemed as a national innovation center by Congress. His fellowship in interventional chronic pain management was completed at the University of Texas Medical Branch in facilities such as MD Anderson, Shriners pediatric burn unit, UTMB League City, and Galveston.

Dr. Nguyen is passionate about helping his patients manage their pain and improve function. From meditation and physical therapy to the most cutting-edge treatments such as spinal cord stimulators or intrathecal drug delivery, he is ready to help you on a road towards a better quality of life.

In his spare time Dr. Nguyen enjoys rock climbing, running around with his two Boston terriers, and eating his wife’s homemade Japanese food.

President & Founding Partner

Gregory G. Pyron, M.Jur, MHA

Experienced executive with a demonstrated history of working in the hospital & health care industry. Twenty-eight years of combined experience in operations, financial analysis and business development. Strong executive leader with a Master’s in Health Administration (MHA), MS in Health Professions Management, and a Master of Legal Studies- Emphasis in Health Law, Policy & Management.

Executive Vice President of Alliance Healthcare Partners.
Founder and President of RBC Health Strategies.
Former CEO of Houston Physicians' Hospital

Join Our Team!

We are always looking for amazing team members! Please email hello@americanpainpartners.com with your resume for any of the positions listed below.

Join Our Team