Wellness & Prevention

Looking for a healthcare provider you can trust? Finding a highly qualified professional is an important first step in your healthcare journey. The Center provides you with your very own Care Team of board-certified physicians in Family, Internal Medicine and Pediatrics, Family Nurse Practitioners, Family Physician Assistants, Certified Medical Assistants, and other healthcare staff that ensure you receive the best care possible.   All our healthcare staff work in a team environment, serving patients of all ages and medical backgrounds and ensuring we meet each patient’s individual needs. Your healthcare provider plays a crucial role as a diagnostician who listens and reacts to your healthcare needs.

Whether you are suffering from a mild cold or a more serious illness, injury, or disorder, our healthcare providers are the first line of defense. Healthcare providers also guide patients on how best to make their healthcare decisions, becoming a partner in both preventative care and treatment. 

Prevention Care

Preventative care and healthcare education can greatly reduce the chance of contracting a chronic illness. During each visit, our healthcare providers work to educate patients on how best to take care of their bodies and maintain a healthy lifestyle. Some aspects of preventative care include:

  • Screenings for cancer, diabetes, cholesterol, and blood pressure
  • Standard immunizations and shots
  • Fitness assessments and obesity screenings

Do not wait until it is too late to make healthy choices. Preventative care could help prevent a small symptom from turning into a chronic illness. 


Receiving a physical is a requirement for many schools, jobs, and official forms. For lots of people, a physical may be the only time they see their doctor over the course of a year. A physical can be useful for the following reasons: 

  • Physicals establish a baseline for your important health statistics like weight, blood pressure, and cholesterol levels.
  • Physicals are a form of preventative care and can help doctors spot small problems before they grow.
  • Physicals can save you money by preventing larger medical emergencies that were missed because of neglect. 


If you or someone you know needs to visit a specialist due to a unique medical condition, chances are you need a referral from another healthcare provider. Our healthcare providers work to assess your medical needs so we can determine the right specialist for you. Establishing a strong relationship with your healthcare provider is essential because it allows you to ask them the right questions to put your mind at ease.

Accredited Patient Centered Medical Home (PCMH)
(Quality team supporting UDS, Meaningful Use, HEDIS and HRSA measures)

Meet Our Providers

Dr. Rashid Mohiuddin

Dr. Rashid Mohiuddin
Medical Director

Dr. Rashid Mohiuddin, Board Certified Family Physician serves as the Medical Director, overseeing all aspects of patient care and chair of Quality improvement/Quality assurance committee. Dr. Mohiuddin has completed his Medical school from India.  He has worked in various countries and worked in FQHC for over 11 years.

Dr. Mohiuddin completed his residency in Family Medicine at Howard University. He has over 20 years of experience and is a fellow of the American Academy of Family Physicians. He has been working as a Medical Director at GPW Health Center since 2009. In his free time Dr. Mohiuddin enjoys playing sports and traveling.

Fluent in Hindi and Urdu.

Syed Mahboob, MD 

Dr. Syed Mahboob, MD was born in Pakistan where he completed Medical School from Dow Medical University of Health Sciences. He completed his Family Medicine training from Howard University, Washington DC during which he was awarded the honor of Educational Chief Resident for the Residency Program.

After completing his residency he continued his fellowship in Geriatrics at Emory School of Medicine in Atlanta, GA. After working as a Geriatrician he joined the center in 2015 where he’s worked full time at the Manassas location as a primary care physician.

In his free time Dr. Mahboob enjoys outdoor activities such as running, biking, and hiking as well as playing chess and poker. He is also a big fan of the latest Hollywood Movies.

Fluent in Hindi and Urdu.

Deborah Yuan_headshot

Deborah Yuan
Family Nurse Practitioner

Deborah Yuan is a Family Nurse Practitioner, a recent graduate from the FNP MSN degree from George Washington University, May of 2018. She completed the Bachelor’s of Nursing degree from GW December of 2015, and her nursing background is in the Emergency Department at GW Hospital, a level 1 trauma center. She also holds a M.S. in Physiology from the joint program of Georgetown and George Mason University, and her first Bachelor’s degree was in Biology at the University of Virginia.

In her free time, Deborah enjoys traveling, outdoor activities, playing the piano and violin.

Fluent in Mandarin.

Elliott Horowitz
Registered Dietitian, Exercise Specialist and Health Educator/Consultant.

Elliott Horowitz is a Registered Dietitian, Exercise Specialist and Health Educator/Consultant. He has certifications in Personal Training (ACE), Strength and Conditioning (NSCA) and Corrective Exercise (NASM).  In addition, he has level I certifications Touch for Health (Applied Kinesiology) and Muscle Activation Technique for the spine (MAT). 

Elliott has developed, taught and produced classes, seminars and videos in the areas of stress management, fitness assessment, ergonomics and many topics on nutrition.  His areas of expertise include, but are not limited to, post rehab of injuries, physique enhancement, weight management, eating disorders, allergies, diabetes, nutrition and mood, cardio-vascular, gastro-intestinal, pre-natal, sport’s nutrition and training, inflammatory issues, home health care and mind-body exercise such as tai chi. He has worked in various types of settings such as: hospitals, medical clinics, weight loss clinics, high school and colleges ranging from individuals with disabilities to professional athletes.

In his free time Elliott enjoys spending time with his family, reading, drawing, watching movies, listening to music and cooking foods of various ethnic origins.  He enjoys yoga, weight training and martial arts. He would like to travel and see more of the world. 


Lena Tran
Physician Assistant

Lena Tran graduated from Howard University, where she was on the Dean’s List. She has been practicing as a Physician Assistant in family medicine and urgent care setting for more than the past 7 years. She believes in patient education, preventative care, in-depth evaluation and treatment. She enjoys building long-term relationships with her patients. Her goal is to provide quality, comprehensive, and compassionate medical care.

In her free time Lena enjoys traveling to new places, exploring different cultures, and spending times with her family.

Fluent in Vietnamese.

Zena R. Carter, MPH, PA-C
Physician Assistant

Zena R. Carter, MPH, PA-C completed her Bachelor of Science in Biology at Virginia Commonwealth University, followed by her Master of Public Health at the same institution. While pursuing and after completing her MPH degree, she worked as an HIV/AIDS Epidemiology Specialist at the Virginia Department of Health in Richmond, Virginia. She later attended The George Washington University Physician Assistant Program; and completed her Master of Science in Physician Assistant Studies. She has practiced as a primary care provider in DC, Maryland and Virginia for the past 10 years- with a clinical interest in community health. Ms. Carter joined the Center in February 2020.

In her spare time, Ms. Carter enjoys volunteering, traveling and outdoor activities.

Allison B. Colby

Allison is thrilled to become part of the GPW team as an Primary provider! Allison is a certified Physician Assistant who graduated from James Madison University with a Master of Physician Assistant Studies degree. She completed her undergraduate degree in psychology at The College of William and Mary in Williamsburg, VA. Her clinical background is in Family Medicine, with a special interest in women's medicine and diabetes education. Fueled by her hands-on experience, working in a variety of Free and Community clinics, Allison has a passion for improving access to quality healthcare for all.

In her free time, Allison enjoys outdoor activities, live music, reading, running and spending time with her husband and young children.

Fluent in Spanish.


Thy Vu
Physician Assistant

Ms. Thy Vu is a Certified Physician Assistant. She studied Health Science for her undergraduate and Physician Assistant for her graduate at University of the Sciences in Philadelphia, PA in 2018. She has experience in Primary Care and Pulmonary Medicine. She is interested in managing chronic medical conditions and forming relationships with patients and their family.

In her free time, Thy enjoys hiking, exercising, and exploring restaurants in the Washington Metropolitan Area. 

Fluent in Vietnamese.