Our Services
- Primary Care
- Newborn/Pediatric Care
- Adolescent Care
- Sleep Disorders
- Women's Health/Gynecology
- Office Procedures/Surgery
- Physical Therapy
- Sports Medicine
- Nutrition Services
- Video Visits
We provide comprehensive preventive care from an award-winning team of board-certified physicians, nurse practitioners, and physician assistants – many of whom live right here in our community.
With a philosophy centered on compassion and partnerships, we treat each patient as an individual, not just a case, ensuring care that prioritizes your wellbeing. At Prince William Family Medicine, we’re more than healthcare providers; we’re your partners in building healthier, happier lives.
Prince William Family Medicine – Manassas is a founding member of Fairfax Family Practice Centers, a trusted healthcare partner for communities across Northern Virginia since 1972. We deliver high-quality, holistic care tailored to each patient’s needs, supporting every family member from newborns to seniors.
Practice Hours
Monday – Friday:
7:45 AM – 5 PM
Saturday – Sunday:
CLOSED
Physical Therapy Hours
Monday – Thursday:
7:30 AM – 5 PM
Friday – Sunday:
CLOSED
Address
8100 Ashton Ave, #101
Manassas, VA 20109
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Primary Care
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Our Providers
Zena R. Carter, MPH, MSHS, PA-C
Specialty: Physician Assistant
Clinical Interests: Primary Care
Years of Experience: 15+
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Zena R. Carter is a board-certified physician assistant specializing in adolescent/adult medicine. She has been practicing since 2010.
Outside of the office, Ms. Carter likes to travel, read, volunteer at community events and spend time with her family/friends.
Accreditations/Memberships
- Member, American Academy of Physician Assistants
- Member, National Commission on Certification of Physician Assistants
Professional Education
- The George Washington University- MSHS, Physician Assistant Studies
- VCU School of Medicine- MPH, Generalist Track, Public Health
Aman Gill, MD
Specialty: Family Medicine
Years of Experience: 25+
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Dr. Aman Gill is a primary care physician board certified in family medicine. She has been practicing since 2000. She has a special interest in preventive and lifestyle medicine, chronic disease management and weight loss.
Outside of work, Dr. Gill enjoys spending time with family and friends, cooking, gardening, and relaxing.
Medical School: Medical College Patiala
Internships: Government Medical College, 5/5/2000 – 5/5/2001. Virginia Commonwealth University. Training Specialty: Pediatrics, 7/1/2002 – 6/30/2003
Residency: Fairfax Family Practice. Training Specialty: Family Practice, 7/01/2003 – 6/30/2006.
Marianne B. Manubag, FNP-BC
Specialty: Family Nurse Practitioner
Clinical Interests: Primary Care, Women’s Health
Years of Experience: 10+
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Marianne Manubag is a board-certified family nurse practitioner who graduated from Virginia Commonwealth University. She has been practicing as a registered nurse since 2012. She has special interest in preventive medicine, women’s health and management of chronic diseases.
Outside of work, she likes to travel and loves to spend time with family and friends.
Professional Education: University of Santo Tomas, BSN and Virginia Commonwealth University, MSN
Catherine M. Matkowski, ANP
Specialty: Nurse Practitioner
Clinical Interests: Primary Care
Years of Experience: 10+
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Catherine Matkowski is an adult nurse practitioner who graduated from George Mason University. She has been practicing since 2011 as a registered nurse and since 2021 as a nurse practitioner.
She was previously a traveling infusion nurse all over the country, specializing in oncology and blood disorders for 11 years. She has participated in the Manassas MAP Clinics to help underserved populations in Northern Virginia.
In her free time, she remains very active with her children and dogs. She is a big Washington, DC sports fan and loves to support local organizations in Prince William County.
Professional Education: George Mason University, MSN
Joanna E. Michaelangelo, PA
Specialty: Physician Assistant
Clinical Interests: General Medicine, Primary Care
Years of Experience: 15+
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Joanna Michaelangelo is a board-certified physician assistant specializing in family medicine. She has been practicing since 2006.
Outside of work, Joanna likes to exercise, travel, read, and spend time with family and friends.
Accreditations/Memberships
- Member, American Academy of Physician Assistants
- Member, National Commission on Certification of Physician Assistants
Professional Education: Saint Francis University, MPAS
Nitu Pandit, PT
Years of Experience: 25+
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Nitu Pandit is a licensed physical therapist and has been practicing since 1999.
Nitu has focused on outpatient physical therapy, treating a wide range of patient populations with various sports injuries, acute and chronic orthopedic problems, as well as pre- and postsurgical patients. Nitu believes in educating her patients in preventive, conservative care and teaching patients to take control of their health to lead a healthy life. She is fluent in Hindi.
Outside the office, Nitu enjoys the outdoors, spending time with family, traveling, hiking and gardening.
Kristen Richárd, MD
Specialty: Family Medicine, Sports Medicine
Years of Experience: 5+
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Dr. Kristen Richárd is a board-certified Family and Sports Medicine physician. She completed fellowship training in Primary Care Sports Medicine at Fairfax Family Practice. Dr. Richárd is committed to providing comprehensive, evidence-based care for patients of all activity levels, with a particular focus on the prevention, diagnosis, and management of sports-related injuries. She also has a strong clinical interest in lifestyle medicine, supporting patients in optimizing their health through sustainable approaches to nutrition, exercise, and wellness.
Outside of her medical practice, Dr. Richárd enjoys exploring the outdoors and pursuing culinary endeavors.
Medical School: University of Medicine and Health Sciences
Residency: Hilo Benioff Medical Center. Training Specialty: Family Medicine
Fellowship: Inova Fairfax Hospital. Training Specialty: Sports Medicine
Dena Shaban, RDN
Specialty: Nutrition
Years of Experience: 7+
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Dena Shaban is a board-certified Registered Dietitian Nutritionist with over seven years of experience in providing individualized nutrition counseling. She specializes in weight management, diabetes care, heart health, or digestive wellness and is dedicated to helping patients build healthier lifestyles through practical, evidence-based guidance.
Outside of work, Dena enjoys cooking new recipes, traveling, playing soccer and spending time with family and friends.
Professional Memberships: Academy of Nutrition and Dietetics
Professional Education: Oklahoma State University – Bachelor of Science in Nutrition and Dietetics
Brittany L. VanWickler, PA
Specialty: Physician Assistant
Clinical Interests: Primary Care
Years of Experience: 15+
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Brittany VanWickler is a board-certified physician assistant specializing in family medicine. She has been practicing since 2008.
Outside of the office, Brittany likes spending her free time with her husband and two boys. They love doing outside activities, playing sports, and taking care of their chickens.
Professional Education: Shenandoah University, MS
Thuy Phuong T. Vo, MD
Specialty: Sports Medicine, Family Medicine, Women’s health
Clinical Interests: Diagnosis and non-surgical management of musculoskeletal injuries, acute injuries, overuse injuries, osteoarthritis, concussion, nutrition, sports injuries, lifestyle medicine, and primary care
Years of Experience: 5+
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Dr. Thuy Phuong Vo is a board-certified primary care physician specializing in family medicine and primary care sports medicine since 2016. Her passion for sports and musculoskeletal health led her to focus on non-operative sports medicine. She also practices lifestyle medicine, believing healthy habits and nutrition can prevent and treat chronic diseases.
Dr. Vo completed a sports medicine fellowship with VCU School of Medicine-Fairfax Family Practice. Outside work, she enjoys hiking in the Shenandoah National Park, exploring other parks, playing volleyball, cycling, and spending time with friends and family.
Molly J. White, MD
Specialty: Family Medicine
Years of Experience: 15+
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Dr. Molly White is a primary care physician board certified in family medicine. She has been practicing since 2007.
Outside of work, Dr. White enjoys cooking, music and spending time with her husband and children.
Accreditations/Memberships
- Member, American Academy of Family Physicians
- Member, Prince William County Medical Society
Medical School: Saint Louis University School of Medicine
Residency: Virginia Commonwealth University Health System. Training Specialty: Family Medicine, 7/01/2007 – 6/30/2010.
Chi G. Young, MD
Specialty: Family Medicine
Clinical Interests: General Medicine, Preventive Disease Care, Primary Care
Years of Experience: 15+
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Dr. Chi Young is a primary care physician board certified in family medicine.
Dr. Young is from Manassas. Outside of work, he likes sports. His favorite teams are the Kentucky Wildcats, St. Louis Cardinals, Washington Commanders, and Boston Celtics.
Medical School: Saint Louis University School of Medicine
Internship: The Western Pennsylvania Hospital
Residency: Virginia Commonwealth University/Valley Health
Shenandoah Valley Family Practice, Residency, 2008-2011
Memberships: Medical Society of Virginia, Prince William County Medical Society President, 2015
Patient Resources
Forms and Policies
Weight Loss Management in Northern Virginia: Your Questions Answered
Weight Loss Management in Northern Virginia: Your Questions Answered At Fairfax Family Practice Centers (FFPC), our family medicine providers offer safe, effective, and personalized weight