
Physician Assistants & Nurse Practitioners
Our orthopaedic surgeons use a team of midlevel medical providers to assist them in both the clinic and the operating room
At Arthritis & Sports, we pride ourselves on offering top-tier orthopaedic care delivered by our expert midlevel team. Our Physician Assistants and Nurse Practitioners are nationally certified professionals providing a wide range of services, including diagnostics, treatments, and procedures, tailored to meet our patients' unique needs. With a commitment to enhancing health outcomes and patient satisfaction, our team leverages the latest advancements to ensure effective and compassionate care. Experience the difference with our dedicated healthcare professionals.

Edwin Encarnacion, PA-C
Edwin Encarnacion, PA-C, joined Arthritis & Sports Orthopaedics in 2004. Edwin received his Bachelor of Art degree in History from George Washington University in 1985 and his Bachelor of Science, Physician Assistant degree from State University of New York at Stony Brook in June 1999.
Edwin specializes in treating all general orthopaedic conditions, specifically: arthritis; adult joint reconstruction; and acute spine pain, problems, and injuries. Through Edwin's previous employment and education, Edwin brings diverse experience in emergency medicine, treating arthritis and spinal injuries. He completed his Physician Assistant Residency and Fellowship Training in Spinal Care at the Virginia Spine Institute.
In addition to his work at Arthritis & Sports Orthopaedics, Edwin is a member of the American Academy of Physician Assistants and the Virginia Academy of Physician Assistants. Through the Virginia Academy of Physician Assistants, Edwin gives free school exams. He also covers major races in the area like the Cherry Blossom 10 Miler, Wine Country Half Marathon, and more. He volunteers with the National Kidney Foundation, performing kidney screenings, along with volunteering with the Herndon Free Clinic performing sports physicals.

Shannon Glaws, MMSPA-C
Shannon Glaws, MMSPA-C, joined Arthritis & Sports Orthopaedics in 2010. Shannon received her Bachelor of Health Sciences degree from James Madison University in 2007 before obtaining her Masters of Medical Science degree from Arcadia University in 2010.
Shannon specializes in treating all general orthopaedic conditions. Through her previous employment and education she has gained experience with orthopaedics, post-operative treatment, emergency care and internal medicine.
Shannon is certified by the National Commission of Certification of Physician Assistants and is presently licensed in the state of Virginia. She is currently a member of the Virginia Academy of Physician Assistants and the American Academy of Physician Assistants.

Cory Kraftson, MSPAS, PA-C
Cory Kraftson, MSPAS, PA-C, joined Arthritis & Sports Orthopaedics in 2014. Cory received his Bachelor of Science in Applied Health Science from Wheaton College in 2009 before obtaining his Masters of Science in Physician Assistant Studies from Shenandoah University in 2013.
Cory specializes in treating all general orthopaedic conditions. Through his previous employment and education he has gained experience with orthopaedics, pre- and post-operative treatment, emergency care, family, internal medicine, and pediatrics.
Cory is certified by the National Commission of Certification of Physician Assistants and is presently licensed in the state of Virginia. He is currently a member of the Virginia Academy of Physician Assistants, the American Academy of Physician Assistants, and Physician Assistants in Orthopaedic Surgery.

Monica Novak, DMSc, MPAM, PA-C
Monica Novak, DMSc, MPAM, PA-C, joined Arthritis & Sports Orthopaedics in 2021. Monica received her Bachelor of Science degree from Virginia Tech in 2018 before obtaining her Master of Physician Assistant Medicine from Lynchburg College in 2020. She then went on to complete her Doctor of Medical Science degree and a fellowship in Orthopedic Surgery in 2021.
Monica specializes in treating all general orthopaedic conditions. Through her previous employment and education, she has gained experience with orthopaedics, post-operative treatment, emergency care, and internal medicine.
Monica is certified by the National Commission of Certification of Physician Assistants and is presently licensed in the state of Virginia and Maryland. She is currently a member of the American Academy of Physician Assistants.

Lisa Siddall, FNP-BC
Lisa Siddall, FNP- BC, joined Arthritis & Sports Orthopaedics in October 2009. Lisa earned her Bachelors of Science in Nursing from South Dakota State University and her Masters of Science/Family Nurse Practitioner from University of Phoenix in Honolulu, Hawaii before serving 5 years active duty in the United States Air Force.
Lisa specializes in treating all general orthopaedic conditions, specifically, arthritis management. With over 20 years of nursing experience, she brings exceptional experience with orthopaedics and family care, only further broadening Arthritis and Sports Orthopaedics’ range of service offered to our patients.
In addition to her work at Arthritis & Sports Orthopaedics, Lisa is a member of the Virginia Council of Nurse Practitioners and the Sigma Theta Tau Honor Society of Nursing. She is nationally certified through American Nurses Credentialing Center (ANCC).
Here's What Our Patients Say About Our Midlevel Team
PA Edwin and all the staff were very professional, efficient, and thorough in getting me into an appointment the same day, and their evaluation of my injury and remediation. Such a great environment, all the staff are joyful and sincerely enjoy what they are doing e.g. PA Edwin just celebrated his 18th year with Arthritis & Sports, so its refreshing to see a practice with longevity of personnel.
JCP
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My appointment was with Cory (PA-C). First time I had met with him. My husband and I were impressed. He had read my chart, asked questions and listened intently as we discussed my current problem. Together we were able to plan a path forward to better address pain situation. Came away feeling much more positive about the future. Kudos also to several administrative staff I met yesterday. Friendly faces and good skills make a difference on days like that.
Mary S.
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Lisa NP assessed my left knee issue, reviewed MRI, gave recommendation, and advice for treatment that would be appropriate and why surgery was not appropiate for my condition. She was overseeing a PA student's clinical rotation as well. HELPFUL, COMPETENT, honest and friendly care. Always at Loudoun's Arthritis & Sports.
Jude M.
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