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Ndubuisi Okafor, MD, is a board-certified internal medicine physician with over 20 years of experience. At his practice, Okafor Medical Associates, located in Washington, DC, Dr. Okafor offers patients compassionate care for a variety of conditions including chronic disease management, ADHD, and internal medicine concerns as a leading primary care physician.

Dr. Okafor obtained his medical degree from the Howard University Hospital and is board-certified by the American Board of Internal Medicine. He is also specially trained in Advanced Trauma Life Support and Advanced Cardiovascular Life Support.

Dr. Okafor is a registered Civil Surgeon with the United States Center for Immigration Services, so he can provide Immigration Medical examinations with all the required tests in the facility. In addition, is a Registered Certified Medical Examiner with the Federal Motor Carrier Safety Administration, so he can provide medical examination and certification for commercial motor vehicle drivers.

When he is not treating his patients, Dr. Okafor enjoys spending time with his family and pursuing his hobbies which include football, soccer, and running. Dr. Okafor also speaks English, Ibo, Yoruba, and Hausa.

He looks forward to meeting new patients and giving them the best care possible.

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.

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.

Xinna Yi is a board-certified Family Nurse Practitioner with a Master of Science in Nursing from Wilkes University, which she completed in 2023. She brings a wealth of experience from her work in a family medical clinic and her previous role as a Registered Nurse specializing in cardiology medicine. Before transitioning to nursing, she graduated from medical school in China and gained one and a half years of experience as a gastrointestinal physician at an academic hospital in China.

 Xinna is committed to patient-centered care, employing a collaborative, team-based approach to healthcare. She has a passion for continuous learning and teaching. In her personal life, she enjoys spending time with her family, reading, watching movies, and traveling.

Abbi Lamparelli is a Nurse Practitioner with Gastro Centers of Maryland, bringing over a decade of hands-on clinical experience to her role. She began her career in medical-surgical and emergency medicine and transitioned into advanced practice nursing in 2023 after completing her training at Drexel University. She further advanced her education by earning a Doctor of Nursing Practice from Aspen University.

 

Abbi’s approach to patient care is deeply rooted in compassion and respect. She emphasizes a patient-centered, holistic, and evidence-based philosophy—ensuring that each individual receives personalized care tailored to their unique health journey. She remains committed to empowering patients with clear communication, shared decision-making, and attentive follow-up.

 

Beyond her clinical work, Abbi has a strong interest in healthcare research and ongoing professional development. Outside of work, Abbi enjoys reading, birdwatching, and trying new restaurants—interests that highlight her curiosity and appreciation for both quiet moments and fun new experiences.

Colleen Abell is a board-certified Family Nurse Practitioner. She graduated with a Master of Science in Nursing from Georgetown University in 2006. She has practiced as a nurse practitioner for the past sixteen years. Ms. Abell's experience includes working in a family medical clinic, but she spent most of her career providing care for patients recovering from Bariatric and GI surgical/oncology procedures. Prior to becoming a nurse practitioner, Ms. Abell worked as a Registered Nurse in cardiology and emergency medicine.

Colleen joined the Gastro Center of Maryland in 2021 after relocating from the NY/NJ area. She is dedicated to being a great provider and advocate for her patients. Outside of work, Ms. Abell enjoys spending time with her husband and three boys.

Capital City Primary and Immediate Care’s approach to family medicine gives you the flexibility to focus on your health when it works for you. Fernando Porter, MD, and the attentive care team partner with you to support your day-to-day health and self-care routines, at the office location in Silver Spring, Maryland. When you’re sick and need care, the team is standing by around the clock. They will be available to you 24/7 virtually or in-person during routine office hours with providers that can help get you on track. They’ll take the hassle and guesswork out of feeling better.

When you need to manage urgent, preventive, or chronic health conditions, we try our very best to make it easy and are there for you at the touch of a button. From healthy eating to vaccinations and preventive physical exams, we provide trusted health care solutions that are driven by compassion, integration of technology, and use of the most up-to-date, evidence-based information.

Capital City Primary and Immediate Care is a proud member of Privia Medical Group - a physician-led, multi-specialty, national medical group.

To make an appointment, call Capital City Primary and Immediate Care or book an appointment online today.

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.

Taseen Mir, MD, is a family medicine physician at Prosperity Internal Medicine in Reston, Virginia. Dr. Mir is passionate about helping you and your loved ones stay healthy at all times, and partners with you to find the best care plans. 

Dr. Mir obtained her bachelor’s degree in psychology from Michigan State University in Lansing, Michigan. She then went on to complete her medical education at St. Matthew’s University School of Medicine in Cambridge, England. After obtaining her doctorate in medicine, she pursued residency training in family medicine at Wayne State University School of Medicine in Detroit, Michigan. 

During her time as a physician, she was awarded the “Claire Knighten-Ward Award” for her humanism and excellence. She was also honored by Northern Virginia Magazine and the Washingtonian with a “Top Doctors Award.” 

At Prosperity Internal Medicine, Dr. Mir specializes in general practice, as well as allergy treatment and women’s health. She has been practicing family medicine for over fifteen years, and is committed to excellent health outcomes.

For over 10 years, I have been combining conventional and innovative methods to modern medicine in order to attain unbelievable healing results for my patients. Through active listening and thoughtful questioning, I am able to deliver high-quality care that utilizes the most advancement in medicine. I am particularly interested in health prevention, creating access and delivery of care that is cost-effective and appropriate for the individual. I graduated in 2009 with honors, where I completed my clinical training in Family Medicine. I am a board certified Family Nurse Practitioner. I was also a clinical faculty at DeSales University for 5 where I had the privilege of helping to mentor the next generation of nurse practitioners.

Sheeri Jonnala is an experienced Clinical Dietitian with a demonstrated history of working in the hospital & health care industry. She is skilled in health promotion, weight management and clinical nutrition. She obtained her Master of Science (MS) focused in Human Nutrition from Drexel University. Sheeri enjoys trying new recipes, traveling and playing with her two girls.