Medical Services

Our highly qualified professionals bring a variety of skills, experiences and specialties to our Center. Our team members include physicians who are board certified in Family and Internal Medicine MDs, Pediatric MDs, Family Nurse Practitioners, and Physician Assistants, in addition to certified Medical Assistants. All of our professional’s work in a team environment, serving patients of all ages and medical backgrounds and ensuring that we meet each patient’s individual needs. As a patient at the Center, we want you to feel that you are being treated with exceptional care, compassion and professionalism.

  • Wellness visits
  • Women's Health
  • Sick Visits
  • Physicals (School, Job, Sports, Wellness)
  • Immunizations
  • Disease Screening
  • Chronic Disease Management (Diabetes, Hypertension etc.)
  • Cancer Screenings (Breast Cancer, Colon Cancer, Cervical Cancer)
  • Specialist Referrals
  • Patient Education
  • On-site Lab service (Lab Corp, Quest, Alpha-Genetic Testing)
  • Pharmacy Services
  • Pharmacy Assistance Program
  • Preventive Health
  • Accredited Patient Centered Medical Home (PCMH)
    (Quality team supporting UDS, Meaningful Use, HEDIS and HRSA measures creating a patient centered team base care.)

Kate Lee

With the funding provided from Virginia Health Care Foundation, the Health Center is able to meet our patient demands in Manassas, Manassas City and Manassas Park by bringing in a new member to the team.

We are very excited to introduce our new bilingual Spanish speaking provider Kate Lee, Physician Assistant.

Call 703-680-7950 to schedule your appointment with her!

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 17 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. He speaks Urdu and Hindi fluently. During his free time he enjoys playing sports and traveling.

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 spare time he 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.

doctor Layla Hussain

Dr. Layla Ali Abdal Hussain 

Dr. Layla Ali Abdal Hussain is American Board Certified in Geriatrician and Internal Medicine. She earned he Diploma of General Medicine Al-Mustansiriya University in Bagdad in 1991. She then relocated to New Zealand where she continued with her education and earned her Diploma of Obstetrics and Gynecology. She completed her Internal Medicine Program at Prince George Hospital and her Fellowship Program of Gerontology from the University of Maryland. She is licensed to practice in Maryland and Virginia.

She has also had her work published Journal of Clinical Geriatrics and Consultant 360. Her interest and hobbies consist of traveling, reading, jogging, and photography.

Katie Kotopoulos
Family Nurse Practitioner

Katie Kotopoulos is a Family Nurse Practitioner. She sees adults and children from age newborn to 100. Her undergraduate degree is from The University of Virginia. She then received a second bachelors degree in Nursing from The Johns Hopkins University and then received a Masters in Nursing from Georgetown University in 2003. She has worked at Georgetown University Medical Center and at the United States Embassy in Dhaka, Bangladesh. She lived, worked and travelled for 7 years in Africa and Asia before joining the Center in 2015.

When Katie is not at work, she enjoys reading, running and spending time with her husband and 4 sons.

​Alma Tobar
Family Nurse Practitioner

Ms. Tobar is a board certified family Nurse Practitioner who joined GPW Health Center in 2018. Ms. Tobar received her Master's Degree from University of Turabo in Miramar, Florida. Prior to The Center, she has worked in Internal Medicine Practice Group in Falls Church and Alexandria, VA.

She is fluent is Spanish and English. She is a member of the American Association of Nurse Practitioners

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.

During her free time, she enjoys traveling, outdoor activities, and grew up playing the piano and violin.

Rosemary Nzeogu-sm

​​​Rosemary Nzeogu
Family Nurse Practitioner

Rosemary Nzeogu completed her Bachelor’s Degree in Nursing at Otterbein College in Westerville Ohio. Subsequently, she obtained her Master’s Degree in Nursing under the Family Nurse Practitioner program at Tennessee State University. Rosemary Nzeogu has previous experience as a Registered Nurse at Doctor’s North Hospital and St. Ann’s Hospital in Columbus, she also worked as a Nurse Case Manager for Nationwide Better Health. Her experience as a Nurse Practitioner is highlighted during her time at Columbus Neighborhood Health Center in Columbus, OH, she continued her journey as a Nurse Practitioner in CVS Minute Clinic, INOVA Pre-Surgical Center, and join GPW Health Center in May 2019.

In her free time Rosemary Nzeogu enjoys travelling. 

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.

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.