Find a Top Internist Near Me in Missouri City, TX – Book an Appointment Instantly

Ali El-Halwagi, MD, MPH, is double board certified in Internal Medicine and Rheumatology. He is dedicated to delivering compassionate, personalized care to every patient he serves. Dr. El-Halwagi graduated summa cum laude from Texas A&M University with a Bachelor of Science in Chemical Engineering. He then relocated to Houston to attend Baylor College of Medicine, where he earned his medical degree with honors. In addition, he holds a Master of Public Health from the University of Texas, reflecting his commitment to understanding and addressing the diverse needs of the community.

Dr. El-Halwagi completed his residency in Internal Medicine at Baylor College of Medicine, where he also served as chief resident. During this time, he gained valuable experience as a hospitalist at Ben Taub General Hospital and Baylor St. Luke’s Medical Center. He went on to complete his fellowship in Rheumatology at Baylor College of Medicine.

Throughout his training, Dr. El-Halwagi has been recognized with multiple honors for his humanistic approach to medicine, dedication to teaching, and excellence in patient care. He is a member of the Alpha Omega Alpha Honor Medical Society and the Gold Humanism Honor Society. He remains actively engaged with the American College of Rheumatology, participating in networking, conference planning, and ongoing professional development.

Dr. El-Halwagi is passionate about improving patient outcomes and building lasting relationships with his patients. Outside of medicine, he enjoys spending time with his family and traveling.

Dr. Mamillapalli is a compassionate cardiologist specializing in personal, evidence-based care with a passion for women’s health. She earned her undergraduate and medical degrees from the University of Connecticut, where she received the Leonard Tow Humanism in Medicine Award. She completed her Internal Medicine residency at the University of Minnesota and served veterans at the Minneapolis VA Hospital before training in General and Interventional Cardiology at Northwell Health in New York, where she was Chief Fellow. 

Board-certified in Internal Medicine, Cardiovascular Disease, Echocardiography, and Nuclear Medicine, she brings extensive expertise in cardiovascular procedures along with a strong focus on prevention and advocacy for women’s cardiovascular health. Patients value her empathy and patient-centered approach. Outside of medicine, she enjoys horseback riding, staying active, exploring Texas, and time with her family. 

John Sunew, MD, FACC, FSCAI, is a skilled cardiologist at Memorial Katy Cardiology Associates in Houston, Katy, Cypress and Fulshear, Texas.

Dr. Sunew is triple-board-certified in Interventional Cardiology, Cardiovascular Disease, and Nuclear Cardiology. He is listed among Top Doctors 2015 in H Texas Magazine and Houstonia Magazine. He was born in Connecticut and grew up in New York state. 

Dr. Sunew attended Amherst College in Amherst, Massachusetts, and went on to earn his medical degree at the State University of New York Health Science Center in Brooklyn, New York. He then completed his internal medicine residency and cardiology fellowship at The George Washington University Medical Center in Washington, DC. He fulfilled his interventional cardiology fellowship at Northwestern University in Chicago, Illinois.

Before moving to Katy, Texas, Dr. Sunew practiced interventional cardiology for ten years in northern Virginia. He held many leadership roles with the Inova Health System, including Medical Director of the Cardiac Catheterization Laboratory at Inova Alexandria Hospital and Chairman of the Inova Cardiology Quality Steering Committee. He was also Regional Leader for Northern Virginia in the Virginia Heart Attack Coalition. In addition, Dr. Sunew served as Assistant Professor for the Department of Internal Medicine, Virginia Commonwealth University School of Medicine Inova Campus. He was also involved in several clinical research trials and academic publications. 

Dr. Sunew can offer the latest and most innovative treatments in cardiology, interventional cardiology, and peripheral vascular disease. He provides expertise in complex coronary angioplasty procedures, peripheral arterial angioplasty, and transradial cardiac catheterization. His non-invasive skills include transesophageal echocardiography and nuclear cardiology.

Kumari Iyer, MD is one of the newest providers who joined Magnolia Family Medicine in the summer of 2025. She sees patients at the Cypress location around the Copperfield community at 15322 Copper Grove Blvd, Houston, TX 77095.

Dr. Iyer brings with her a wealth of experience from having worked in different healthcare fields in California and Tennessee, such as emergency medicine, urgent care, hospice and palliative care, and geriatric and outpatient primary care—her personal passion.

Dr. Iyer graduated from East Tennessee State University in 1998 and is board certified in internal medicine. She is fluent in both English and Tamil. As a mother of three, she enjoys time with her family aside from spending time in her kitchen and tending her garden. 

With years of dedication and service under her belt, Dr. Iyer is committed to delivering compassionate, personalized medical care to you and your family members. You may call (281) 356-1945 or click the “Schedule Appointment” button to select your desired date and time. For your convenience, she sees patients on Tuesdays and Thursdays until 7 pm at the Cypress location and on Wednesdays she sees patients at the Walk-in location until 7 pm.

Allison Walworth, DO, is a board-certified Internal Medicine physician who joins Magnolia Family Medicine with years of experience. Dr. Walworth completed her internal medicine residency at Medical City Arlington in Arlington, TX and earned her medical degree from Burrell College of Osteopathic Medicine in Las Cruces, NM.

She is committed to evidence-based care with a patient-centered focus and welcomes adult patients with a personalized touch. Outside of work, Dr. Walworth enjoys reading--especially Golden Age science fiction and watching classic movies.

Schedule a visit with Dr. Walworth today by clicking on the Schedule Appointment button or call our office at (281) 356-1945 to reserve your slot at your ideal day and time. 

As an adult Psychiatrist, Neha Patel, DO, understands just how essential outstanding health services are in reshaping lives and improving patient outcomes. As part of the team at Endocrine and Psychiatry Center, Dr. Patel gets to know those in her care, building trusting bonds with residents of Houston, Texas.

Education has always shaped Dr. Patel’s life. She earned her medical degree from the University of Texas Medical Branch in Galveston. Dr. Patel went on to complete her residency in psychiatry at the same institution. 

Dr. Patel enjoys the challenges and complexity of working in psychiatry and especially loves helping those in her care find a path toward enhanced stability and mental health. She strives to build lasting bonds with patients. 

Residents of the greater Houston region who are 18 and older and want to make the most of their daily mental health and wellness are welcome to come in and meet with Dr. Patel to discuss treatment structure and planning. Book a visit online or by phone to learn more about her approach to mental health.