Gregory E. Gould, D.O.
Gregory E. Gould, D.O. Graduated from Michigan State University College of Osteopathic Medicine and completed his internal medicine residency through the Saint John Health System. Dr. Gould grew up in Romeo Michigan and graduated from Romeo High School. He then attained Bachelor of Science with a major in biology at Hillsdale College. In college, Dr. Gould pursued additional interest through his involvement in collegiate tennis, choir, theater, and debate.
After completing his residency, Dr. Gregory Gould joined practice his with father Todd C Gould D.O. in Rochester Hills Michigan. Following this, his practice transitioned from Henry Ford Health System and finally back into private practice.
On January 25, 2016 he reopened Gregory E. Gould, D.O. P.C, becoming one of a few physicians in Washington. Here he has continued to enjoy his passion as in internal medicine doctor.
Lisa Landuyt FNP-BC
Lisa Landuyt joined the practice in August of 2025. Prior to becoming a Family Nurse Practitioner, she worked as a Registered Nurse for nearly four years at Corewell Health. She earned her Master of Science in Nursing from the University of Detroit Mercy. She is dedicated to listening to patients, advocating for their needs, and delivering safe, timely care.
Ryan Zimmer PA-C
Ryan Zimmer, PA-C, earned his Bachelor of Science degree in Human Biology from Michigan State University before pursuing graduate education at the University of Toledo, where he obtained a Master of Science in Physician Assistant Studies.
Throughout his education, Ryan developed a strong foundation in patient-centered care and evidence-based medicine while gaining experience across a variety of medical specialties.
Ryan joined the practice in April 2026. He is dedicated to providing compassionate, high-quality healthcare and building lasting relationships with his patients.
Ryan grew up in St. Clair, Michigan, he has remained committed to serving the communities of his home state throughout his education and professional career. Outside of medicine, Ryan enjoys outdoor recreation, watching football, and spending time with family and friends.