LOCAL HEALTHCARE PROVIDERS
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291 providers
Availability last updated 02/14/2026
PRIMARY & ALTERNATIVE MEDICAL CENTER
Is Truly Patient Centered.
You are the reason we are here. Our goal is to help you feel better mentally, physically and spiritually. Our primary tools are listening to you sensitively, examining you carefully and then discussing with you thoroughly, our opinions and your options. We see health care as both a science and an art. There is rarely one right answer, and one size almost never fits all. When it comes to your health we will incorporate highly accurate diagnostic laboratories and advance imaging studies with our medical expertise. We will derive diagnoses and treat appropriately as well as make a referral to our affiliated specialist. We will be attentive to your specific needs, concerns and fears. We see you each as special individuals and not merely as people with high blood pressure, diabetes, depression, obesity or high cholesterol. We see ourselves as your primary care providers, health care advisers, educators, and teammates. Patients that take an active role in their health care generally do better.
Dr. Jean Welsh, MD
Family Physician
12162 Tech Rd
Silver Spring, MD 20904
Ms. Shannon Martin, FNP-C
Family Physician
1406-B Crain Highway S
Suite 304
Glen Burnie, MD 21061
Mercy Obamogie, MD
Family Physician
4903 Georgia Ave Nw
Washington, DC 20011
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.
Dr. Ndubuisi Okafor, MD
Internist
7603 Georgia Ave NW
Suite 100
Washington, DC 20012
Shemicka Asom, CRNP
Family Physician
9420 Ridgeview Drive
Columbia, MD 21046
Tavershima Asom, MSN, RN, NP-C
Family Physician
9420 Ridgeview Drive
Columbia, MD 21046
Dr. Uzochukwu Unegbu, MD
Family Physician
9023 Woodyard Road
Clinton, MD 20735
Ms. Shannon Martin, FNP-C
Family Physician
Do Not Use
Glen Burnie, MD 21061
Tavershima Asom, MSN, RN, NP-C
Family Physician
1801 Briggs Chaney Rd
Silver Spring, MD 20905
Tavershima Asom, MSN, RN, NP-C
Family Physician
2 Hopkins Street
Glenn Burnie, MD 21065
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.
Colleen Abell, CRNP
Nurse Practitioner
7120 Minstrel Way
Suite #100 & 211
Columbia, MD 21045
Mrs. Monica Lovins, is a Certified Adult Nurse Practitioner who has been in health care for the last 40 years, advancing her career as a registered nurse in the ICU, Educator in the ICU as well as teaching at Catholic University of America while attaining her master’s in science with a GPA of 3.89, from Felician University, Lodi, New Jersey. She has received multiple nursing award to include excellence and expertise in multiple nursing modalities.
Monica joined Gastro Center of Maryland in 2017 after many years at John’s Hospital Bayview in the Department of Surgery, Bariatric Department. Her mission to treat all gastrointestinal diseases and facilitate, best outcomes for patients who suffer from chronic gastrointestinal diseases.
When off Monica enjoys quilting as well as spending time with family and friends.
Monica Lovins, CRNP
Nurse Practitioner
7120 Minstrel Way
Suite #100 & 211
Columbia, MD 21045
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.
Xinna Yi, FNP
Nurse Practitioner
7120 Minstrel Way
Suite #100 & 211
Columbia, MD 21045
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.
Abbi Lamparelli
Nurse Practitioner
7120 Minstrel Way
Suite #100 & 211
Columbia, MD 21045
