MEET GREER MACKIE, PT, DPT, OCS, PRC

Greer is a Doctor of Physical Therapy and Orthopedic Clinical Specialist who has been practicing in Denver since 2021, following an eight-year clinical career in Washington, D.C.

Originally from St. Louis, she earned her Doctorate in Physical Therapy from Washington University in St. Louis—consistently ranked among the top physical therapy programs in the country. She completed her undergraduate studies in Biology at DePauw University, where she was also a Division III NCAA Women’s Tennis player and an All-American athlete.

Her background in high-level athletics and human biology developed an early interest in how movement, performance, and injury are influenced by the body’s underlying systems.

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POSTURAL RESTORATION INSTITUTE (PRI) & MOVEMENT SYSTEMS FRAMEWORK 

My clinical approach is informed by training through the Postural Restoration Institute (PRI) and the Movement System Impairment (MSI) framework developed by Shirley Sahrmann. Together, these approaches emphasize that the human body functions as an inherently asymmetrical and adaptive system.

Natural anatomical asymmetries—such as the heart positioned slightly left of midline and the liver occupying a large portion of the right upper abdomen—contribute to how the rib cage, diaphragm, and pelvis are organized.

Because of this, human movement is never perfectly symmetrical. During gait, the body must continuously shift between left and right sides to move efficiently through space. Over time, movement strategies may become biased or over-reliant on one side due to anatomy, neuromuscular organization, and habitual postural and breathing patterns.

Early training in the Movement System Impairment (MSI) framework strengthened my ability to identify movement dysfunction through detailed analysis of posture and functional movement patterns.

From this perspective, breathing mechanics, postural organization, and neuromuscular coordination all influence how the body stabilizes, adapts, and distributes load. When these systems become inefficient, compensatory patterns may emerge that contribute to pain, restricted performance, or recurrent symptoms.

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CLINICAL EXPERIENCE

Greer has treated patients across the United States, including recreational, collegiate, and professional athletes—most notably tennis athletes through the USTA Pro Circuit—as well as other professional and elite-level competitors. She also has experience working with tactical and high-demand occupational populations, including the law enforcement and fire service personnel of Washington, D.C.

Her caseload includes individuals managing chronic pain and complex movement dysfunction, often after unsuccessful prior medical or therapeutic care.

She has a particular clinical interest in chronic pain, respiratory movement dysfunction, headache disorders, and movement-based performance limitations.

She is certified in Functional Dry Needling and has experience instructing doctoral-level physical therapy students in clinical education settings.

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PERSONAL

Greer lives in Denver with her husband, baby daughter, and Bernedoodle. She remains active through tennis, strength training, Pilates, and yoga, and enjoys running, hiking and snowboarding year-round.