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David Schoenfish is a physician assistant Board Certified by the National Commission of Certification of Physician Assistants (NCCPA). David is a member of the American Academy of Physician Assistants, and he is currently licensed to practice by the Virginia Board ofMedicine and the Maryland Board of Physicians.

David graduated summa cum laude with a Bachelor of Science in Exercise Science from the University of Sioux Falls in Sioux Falls, SD, during which he was also a member of the USF men’s cross country and track and field teams. He then received his Master of Physician Assistant Studies degree from the University of Nebraska Medical Center (UNMC) in Omaha, NE. During his physician assistant education, David gained experience in assessing and treating various neurologic conditions including traumatic brain injuries, stroke, polytrauma, Parkinson’s disease, Alzheimer’s disease and other forms of dementia, migraine, and multiple sclerosis in inpatient and outpatient settings while rotating with the UNMC Neurological Sciences department and at Madonna Rehabilitation Hospital in Omaha, NE. He has previous clinical experience working as a patient care technician in the neurology unit at Avera McKennan Hospital and University Health Center in Sioux Falls, SD.

Outside of practicing medicine, David enjoys running, cycling, music, following the Minnesota Twins, and spending time with friends and family.

Harleen Bath is a Physician Assistant, Board Certified by the National Commission on Certification of Physician Assistants and is currently licensed to practice in the Commonwealth of Virginia and District of Columbia.  Harleen graduated with a Bachelor of Arts from University of Virginia and with a Master's of Science from Georgetown University.  She worked as Neurosciences Clinical Research Coordinator at Inova Fairfax Hospital where she was involved in numerous clinical trials investigating neurological conditions.  She returned to school to graduate with a Master's of Science in Physician Assistant Studies from Shenandoah University.  She joins Integrated Neurology Services after working as a Neurosurgical Physician Assistant at George Washington University Hospital and Medical Faculty Associates.    

Outside the practice, Harleen is a native of Northern Virginia and loves to travel and spend time with her husband, family, and friends. ​

David Schoenfish is a physician assistant Board Certified by the National Commission of Certification of Physician Assistants (NCCPA). David is a member of the American Academy of Physician Assistants, and he is currently licensed to practice by the Virginia Board ofMedicine and the Maryland Board of Physicians.

David graduated summa cum laude with a Bachelor of Science in Exercise Science from the University of Sioux Falls in Sioux Falls, SD, during which he was also a member of the USF men’s cross country and track and field teams. He then received his Master of Physician Assistant Studies degree from the University of Nebraska Medical Center (UNMC) in Omaha, NE. During his physician assistant education, David gained experience in assessing and treating various neurologic conditions including traumatic brain injuries, stroke, polytrauma, Parkinson’s disease, Alzheimer’s disease and other forms of dementia, migraine, and multiple sclerosis in inpatient and outpatient settings while rotating with the UNMC Neurological Sciences department and at Madonna Rehabilitation Hospital in Omaha, NE. He has previous clinical experience working as a patient care technician in the neurology unit at Avera McKennan Hospital and University Health Center in Sioux Falls, SD.

Outside of practicing medicine, David enjoys running, cycling, music, following the Minnesota Twins, and spending time with friends and family.

Catherine Holder, PA-C, is a physician assistant with more than 10 years of experience. At Fairfax Colon & Rectal Surgery, PC. Catherine specializes in diagnosing and treating anal pain, hemorrhoids, abscesses, and other colorectal conditions.

Catherine completed her undergraduate and physician assistant training at Marquette University in Milwaukee, Wisconsin, before returning to her home state of Alaska to specialize in colon and rectal surgery. During the early years of her career, Catherine met her husband, an Air Force pilot, and relocated to Washington state, where she continued to specialize in surgery.

After welcoming their third child, Catherine and her husband were stationed in Illinois. Catherine transitioned into being a stay-at-home parent during this time before having her third child and moving to Northern Virginia. She is thrilled to rejoin the workforce and return to her passion of helping others at Fairfax Colon & Rectal Surgery, PC.

With extensive education, training, and a compassionate demeanor, Catherine hopes to help her patients feel empowered to face their medical and surgical concerns.

Melissa Falkowski attended Mount Saint Mary College where she graduated Summa Cum Laude with her Bachelor of Science in Nursing Degree. Melissa has over 15 years of experience in the healthcare field, including Oncology, Preoperative, and Postoperative care, and Operating Room experience. After working for 2 years in the Operating Room with Dr. Desai, Melissa joined the team at International Spine, Pain & Performance Center in 2017. As Chief Operating Officer, Melissa is focused on ensuring all clinical standards are met to guarantee that our patients receive optimal and cutting edge care. Melissa partners with the clinicians at ISPPC to execute our mission statement of being leaders in clinical excellence. In her spare time, Melissa enjoys traveling the world with her husband and daughter, and spending time with their family and friends.

Board Certified in Integrative & Holistic Medicine as well as Family Medicine, Certified Functional Medicine physician Dr. Calihan brings decades of experience to her work with patients, whom she helps achieve optimal health and wellness through a variety of techniques.

Dr. Calihan has spent many years studying and obtaining credentials in holistic, functional, and integrative medicine. Her practice has been awarded the Best of Loudoun prize for alternative medicine each year since 2007.

Dr. Calihan graduated from Smith College in Northampton, Massachusetts, before obtaining her medical degree from Georgetown University Medical School in Georgetown, Washington, DC.

Dr. Calihan trained and precepted at the Center for Mind-Body Medicine in Washington, DC, and she also trained in acupuncture with Dr. Joseph Helms at UCLA.

In 2000, Dr. Calihan earned her board-certification in Holistic Medicine, and in 2014 became a member of the first class of Certified Functional Medicine Physicians through the Institute of Functional Medicine.

Dr. Calihan was a founding owner and former medical director at Loudoun Medical Group, one of the largest multi-specialty physician practices in the mid-Atlantic region. She was also their Board Chair from 2000 to 2005.

Dr. Calihan specializes in the treatment of chronic, complex conditions, including autoimmune disease, thyroid and hormonal imbalances, biotoxin illness, chronic fatigue, and fibromyalgia. Using the Functional medicine approach, she searches for the cause of a condition and then works to help rebalance the system.

Visit Dr. Calihan for compassionate, comprehensive health care with a personal touch. She’s currently welcoming new patients.

Dr. Dan Bishwakarma is a board-certified family physician at Prime Medical Care, LLC, serving residents living in the Alexandria, Virginia area. He earned his M. B., B. S. (Bachelor in Medicine and Bachelor in Surgery) degree from Tribhuvan University, Nepal. He completed his residency in Family Medicine at the Wyckoff Heights Medical Center, New York, affiliated with Cornell University, in June 2008. He served as a chief resident in the last year of his residency. His residency training in the metropolitan environment of New York City and work experience soon after have given him the knowledge and skillset required to manage a wide variety of illnesses in a diverse patient population. He is currently practicing in Alexandria, VA providing primary and immediate care to the surrounding D.C. Metro areas.

At Prime Medical Care LLC, Dr. Bishwakarma places a strong emphasis on disease prevention and health promotion. To prevent illness, he encourages his patients to participate in annual comprehensive physical exams and periodic health checkups. He promotes health screening based on each patient’s individual personal history, family history, and risk factors. To promote health, he provides education on healthy habits such as exercise, good nutrition, smoking cessation and stress management. He treats a variety of chronic medical conditions including but not limited to:

• Diabetes
• High blood pressure
• High cholesterol
• Thyroid disease
• Asthma
• Chronic bronchitis
• Acid reflux
• Depression/anxiety
• Arthritis

In addition, he also treats patients who need immediate care like:

• Allergies
• Flu
• Acute sinusitis
• Strep throat
• Ear infections
• Acute bronchitis
• Pneumonia
• UTIs & STIs

He’s very experienced as to when to refer patients to emergency care facilities and/or specialists where they can receive the level of care they need. Through social media, his patients say Dr. Bishwakarma is a very efficient and knowledgeable doctor with excellent bedside manner.

Personally, Dr. Bishwakarma is a family oriented person. He has been married for nearly 25 years.  He has a very supportive wife and three wonderful children: two sons and one daughter. He loves to listen to music, read and spend time with his family when he is not working. He strongly believes that good family support is essential to cope with illnesses and to be healthy.

Melissa Falkowski attended Mount Saint Mary College where she graduated Summa Cum Laude with her Bachelor of Science in Nursing Degree. Melissa has over 15 years of experience in the healthcare field, including Oncology, Preoperative, and Postoperative care, and Operating Room experience. After working for 2 years in the Operating Room with Dr. Desai, Melissa joined the team at International Spine, Pain & Performance Center in 2017. As Chief Operating Officer, Melissa is focused on ensuring all clinical standards are met to guarantee that our patients receive optimal and cutting edge care. Melissa partners with the clinicians at ISPPC to execute our mission statement of being leaders in clinical excellence. In her spare time, Melissa enjoys traveling the world with her husband and daughter, and spending time with their family and friends.