About
Dr. Louise R. Butler, DO, owns and operates Avalon Primary Care in Lancaster, Pennsylvania. She grew up in Southern California, just outside San Diego, and left home at 20 to pursue college and medical school in Maine. In July 1994, she moved to Lancaster to begin her Family Practice residency. She met her husband five months after arriving, and they married 18 months later.
After completing her residency, Dr. Butler spent four years practicing in North Carolina and nearly four years in Western Maryland before returning to Lancaster in 2001. She founded Avalon Primary Care in 2019, fulfilling her goal of practicing medicine on her own terms. As a Doctor of Osteopathy, she holds full medical licensure and incorporates Osteopathic Manipulative Therapy into her care. She treats a broad range of conditions including heart disease, diabetes, and chronic illness. Her clinical philosophy centers on listening deeply: she believes a patient, given enough time and attention, will reveal both the diagnosis and the best path forward.
Education & Training
Undergraduate
College in Maine (institution name not specified)
Medical School
Medical school in Maine (institution name not specified)
Residency
Family Practice, Lancaster, PA (started July 1994)
Conditions Treated
Who is Dr. Butler right for?
Dr. Butler serves patients of all ages, from infants through seniors. Adults managing chronic conditions like heart disease and diabetes benefit from her thorough, unhurried approach. She works well with patients who want a long-term relationship with a single physician who knows their history. Medicare recipients receive her full range of services with no monthly fee. Patients seeking hands-on osteopathic care also find a good match in her practice.
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Frequently Asked Questions
Dr. Butler treats a broad range of conditions across all age groups. Her focus areas include heart disease, diabetes, and other chronic illnesses. She also handles acute sick visits, performs physicals, and manages ongoing medication and wellness needs for her patients.
Dr. Butler holds a Doctor of Osteopathy degree, which represents a full four-year medical education following a four-year college degree, plus at least three years of residency training. DOs receive the same core medical training as MDs and also study the musculoskeletal system and Osteopathic Manipulative Therapy. She completed her Family Practice residency in Lancaster in 1994.
Dr. Butler practices Osteopathic Manipulative Therapy, commonly called OMT. OMT uses hands-on techniques to diagnose and treat conditions involving the musculoskeletal system. She includes OMT in the membership fee for her patients, and non-members may access it for $75 per session.
Dr. Butler has practiced medicine in the Lancaster area since 2001. She first arrived in Lancaster in 1994 to complete her Family Practice residency. After years of practice in North Carolina and Western Maryland, she returned to Lancaster and has remained here ever since.
Dr. Butler believes that listening carefully is the foundation of good medicine. She holds that a patient, given enough time and attention, will communicate both the diagnosis and the most effective treatment. Her 30 to 60 minute appointments give her the time to practice medicine this way.
Dr. Butler offers home visits for established patients. She charges $75 per home visit. She does not schedule home visits after dark.
Dr. Butler gives patients direct access by phone, text, email, and video call through Skype or FaceTime. She also offers weekend care if she comes into the office, with a $50 fee for all ages.
Dr. Butler sees patients from infancy through adulthood. Children and young adults up to age 25 pay a reduced monthly membership fee. She performs well child exams, sports physicals, and driver's physicals in addition to sick and chronic care visits.
Doctor profile last updated April 10, 2026