Regional Medical Directors
Backed by a team of experts

The role of our Regional Medical Directors is to assist ACO teams and support practices by engaging physicians in their value-based care journey. They support practices by developing and sustaining relationships and impacting clinical strategies and workflows that promote practice and patient satisfaction and improve value-based healthcare delivery.

Dr. Jen Brull

Dr. Jen Brull is a family medicine physician, practicing in Plainville, Kansas. She obtained her medical degree from the University of Kansas School of Medicine and completed family medicine residency training in Topeka, Kansas. Dr. Brull is in her nineteenth year of private practice in a rural area. She served two years (2013-2014) as an HIT Fellow for the Office of the National Coordinator and was recognized as a Hypertension Control Challenge Champion by the CDC in 2014. She was also named as a Top 25 Innovator by Modern Healthcare in 2019 and is a physician leader in performance improvement and change management. Her special interests include integrating the promotion of healthy behaviors into the office visit and the use of social media in medicine.

Dr. Brull supports ACOs in Kansas, Oklahoma, Missouri, Colorado, and Utah.

Dr. Kisha Davis

Kisha Davis, MD, MPH is a family physician in Maryland. She is also a former medical director at CHI Health Care, an integrative primary care center in Maryland and prior to that served at a federally qualified health center. Dr. Davis has recently served as a project manager at CFAR working on the Family Medicine for America’s Health project focusing on payment reform, practice transformation, and health equity. Just prior to joining CHI, she served as a White House Fellow at the US Department of Agriculture. Dr. Davis completed an undergraduate degree from Duke University, and her MD from the University of Connecticut where she received the Lyman Stowe Award for humanitarianism in medicine. She completed her residency from the University of Maryland where she served as Chief Resident and later earned a Master’s in Public Health from Johns Hopkins University.

Dr. Davis supports several ACOs in Maryland and West Virginia

Dr. Becky Jaffe

Rebecca (Becky) Jaffe, MD is a board-certified family physician with more than 30 years of field experience. Her passion began by working at a Community Health Center, was strengthened by teaching at a family medicine residency, and she now successfully runs her own private family practice business. Dr. Jaffe has served on the National Board of Directors of the American Academy of Family Physicians as well as the American Medical Society for Sports Medicine. Her journey in sports medicine allowed her to publish in the field, as well as to travel with athletes during national and international competitions. She is currently in the leadership of the American Academy of Family Physicians Foundation. She has served her community on her local hospital board and various fundraising sporting events. Dr. Jaffe earned her undergraduate degree from Lehigh University and her medical degree from the Medicine College of Pennsylvania. She also completed her Masters in Public Health at Drexel University in Philadelphia, PA.

Dr. Jaffe supports ACOs in Florida, Georgia, Kentucky, Michigan, and Missouri.

Dr. Josh Lowentritt

Josh Lowentritt, MD is an Internist and Nephrologist practicing in New Orleans, Louisiana since 2001. He graduated from Duke University as a History major and completed medical school, residency, and fellowship at Tulane University School of Medicine. He serves as medical director of a CMS 5 star Continuing Care Retirement Community as well as CMS 4 star and 5-star hemodialysis and peritoneal dialysis clinics. Dr. Lowentritt led a multi-specialty medical group in New Orleans for 15 years as a managing partner. He was awarded the Distinguished Service Award from Leading Age in 2017 for his nursing home medical director work.  He founded Louisiana Physicians ACO in 2014 along with independent practices across the state.  His passion for patient care includes melding his professional and personal interests in mindfulness with the goal of reducing patient suffering. As a Nephrologist, he coordinated New Orleans' renal community in their COVID19 response. 

Dr. Lowentritt supports several ACOs in Louisana

Dr. Richard Lyn-Cook

Richard Lyn-Cook, MD, MBA, MPH is a med-peds physician in Houston, Texas. He attended Yale University followed by Yale Medical School in New Haven, Connecticut, and completed both his med-peds residency and a general medicine fellowship at Mount Sinai Medical Center in New York. For 10 years, Dr. Lyn-Cook was a medical director at Baylor College of Medicine in the division of family medicine. Prior to that, he worked in community-based and private practice settings in Houston and the Bronx. Pursuing an interest in the business of medicine and practice management, Dr. Lyn-Cook recently completed an MBA with a focus in health care administration from Texas A&M, Corpus Christi. He has an enduring interest in population health, social determinants of health, patient-focused care, technology-based solutions for documentation overload, and streamlining workflows to enhance practice efficiency. Dr. Lyn-Cook has been a collaborative leader on several ongoing quality improvement initiatives including PCMH, DSRIP, MIPS, Title V maternal and child health, and Texas Health Steps. 


Dr. Lyn-Cook will be supporting Aledade ACOs in Texas.

Dr. Timothy Poulton

A family medicine physician from Asheville, NC, Timothy Poulton, MD is dedicated to delivering high-quality, patient-centered family medicine to ensure all patients receive the best possible care. He obtained his medical degree from the University of Michigan Medical School. His passion for value-based care led him to Aledade, where he enjoys being a part of the dynamic, multi-disciplinary teams that empower independent primary care offices to provide outstanding care for their patients. Dr. Poulton also enjoys working with the Institute for Healthcare Excellence as a faculty member. As a part of the IHE team, he helps bring programs to offices, hospitals, and health systems that enhance and transform culture and facilitate strong interpersonal connections between providers and patients, as well as among the healthcare team members. Dr. Poulton has a special affinity and ease for teaching and puts these skills to work educating providers on HCC and risk capture, in addition to other value-based care concepts.

Dr. Poulton supports several ACOs in Alabama and Arkansas.