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Annie Chang, PA-C, is a board-certified physician assistant at Heights Dermatology in Houston. 

Annie is originally from the Houston area and attended high school at St. Agnes Academy. She graduated from the University of Texas with a Bachelor of Science and Arts in Nutrition in Business. She obtained her Master of Physician Assistant Studies from UTMB in 2019. 

Before completing her graduate studies, she gained hands-on experience working as a clinical care coordinator in hepatology at the Houston Medical Center.

In addition to her background in nutrition, Annie holds a keen interest in skin care and in preventative medicine through lifestyle and diet. Building a strong relationship with every patient is an integral part of her practice. Having received personal training in dermatology from Dr. Alpesh Desai, DO, and Tejas Desai, DO, Annie practices medical dermatology, skin cancer surgeries, and other various skin procedures. Annie regularly pursues her continuing medical education in dermatology to provide the highest quality care for her patients.

She is currently a member of the Society of Dermatology Physician Assistants, American Academy of Physician Assistants, Texas Association of Physician Assistants, and Texas Gulf Coast Physician Assistant Association. In her free time, Annie enjoys cooking, crafting, and spending time with her husband and English bulldog, Rex.

Andrew Martin, MSN, APRN, FNP-C, is a board-certified family nurse practitioner at Southern Secrets Med Spa and Clinic in Conroe, Texas. He takes a integrative approach to healing that avoids overreliance on pharmaceuticals.

Andrew earned an associate’s degree at the Lower Columbia College, College of Nursing in Longview, Washington, before completing his Bachelor of Science in nursing with honors at the University of Texas College of Nursing in Arlington. He fulfilled a master’s degree and post-graduate program at the University of Texas Health Science Center in Houston to earn the family nurse practitioner credentials and certification in emergency and trauma. 

Before joining Southern Secrets Med Spa and Clinic, Andrew worked as an emergency center staff nurse in the busiest Level III trauma center in Texas and as a charge nurse in a chemical detox unit. He is a member of the American Academy of Emergency Nurse Practitioners, the American Association of Nurse Practitioners, and the Sigma Theta Tau.

When he’s not at work, Andrew enjoys spending time with his wife and four children. He likes being outdoors, hiking, hunting, fishing, and hopes to obtain his pilot’s license someday.

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. 

Welcome to Magnolia Family Medicine, your trusted family doctor serving Texas communities for almost 20 years. We are open 7 days a week and specialize in comprehensive family medicine, providing exceptional personalized care for patients of all ages--from newborns to great-grandparents.

We now have 6 locations within the Magnolia/Woodlands/Woodforest areas, plus two other clinics--one in Cypress and one in Tomball. Our offices are designed with great care to welcome you into a friendly and caring environment. We believe that your comfort and well-being are an integral part of your care, and we strive to make your visits as pleasant as possible.

Whether you're looking for effective preventative medicine services, need help managing your diabetes, require urgent care, or are interested in weight loss services or hormone replacement therapy, our dedicated team is here to support your family's health and well-being.

We value your feedback and invite you to share your experiences with us in our Reviews section. Your insights help us continuously improve our services to serve you better.

Visit us today and experience the difference that your friendly neighborhood clinic can offer. To schedule an appointment, you may schedule online or call the office (281) 356-1945.

Ruby Samuel John, MD, is a board-certified internal medicine physician dedicated to providing compassionate, patient-centered care. She provides expert care to patients at Magnolia Family Medicine in Magnolia, Texas.

Dr. John earned her medical degree from Windsor University School of Medicine in 2005 and completed her residency at Rutgers NJ Medical School in Newark, where she was honored with the Most Humanistic Award in 2009. She went on to serve as Chief Resident and later as an Assistant Clinical Professor at University Hospital until 2011.

Dr. John devoted ten years to the Primary Care Clinic of North Texas, a non-profit organization serving the uninsured. Her commitment to underserved populations was recognized at the Lone Star Cares Fundraising Gala, where she received the Care and Compassion Award in 2014.

Dr. John’s philosophy of care emphasizes listening, trust, and prevention. She believes that effective medicine begins with understanding the whole patient, not just treating symptoms. By encouraging healthy lifestyle choices and focusing on preventive care, she helps her patients reduce the risk of both acute and chronic illness while improving overall wellness.

Outside of her practice, Dr. John enjoys spending time with her husband and their three active boys. She can often be found running outdoors or serving her local church community.

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.  

Kumari Iyer, MD 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.

Tariq Dayah, MD, MPH, FACC is a renowned cardiologist at Memorial Katy Cardiology Associates in Houston, Katy, and Cypress, Texas. 

Dr. Dayah is board-certified in internal medicine, cardiovascular disease, interventional cardiovascular disease, nuclear medicine, and echocardiography. He offers expertise in preventative medicine (blood pressure, heart rate, and cholesterol control), transradial and transfemoral coronary artery interventions, interventional cardio-oncology, peripheral artery interventions, repair of congenital heart defects, such as percutaneous atrial septal defects, and the latest technology involving structural heart interventions.

Dr. Dayah is skilled in numerous noninvasive cardiac imaging modalities such as PET scans, nuclear medicine, and ultrasound imaging. He has been in practice since 2012. He is interested in the latest advancements in coronary artery disease therapies, transcatheter aortic valve replacement, and cardio-oncology. Dr. Dayah currently serves as the Director of Structural Heart at Houston Methodist West Hospital.

A fellow of the American College of Surgeons, Dr. Dayah conducts research into transcatheter aortic valves and energy drink-induced endothelial vascular dysfunction. He has published several journal articles on these research topics.

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.

Yasser Al-Khadra, MD, FACC, is a highly trained cardiologist at Memorial Katy Cardiology Associates in Houston, Katy, and Cypress, Texas.

Dr. Al-Khadra is board certified in internal medicine, cardiology, nuclear cardiology and cardiac computed tomography. He completed his General Cardiology fellowship at Southern Illinois University School of Medicine in Springfield, Illinois. Then, went on for his Interventional Cardiology training at Wayne State University in Detroit, Michigan. During his fellowships, he was trained to perform high risk coronary procedures and chronic total occlusions.

Dr. Al-Khadra is well versed in multiple imaging modalities including PET scans, nuclear cardiology, cardiac computed tomography and echocardiography. He is skilled in complex coronary interventions, peripheral vascular interventions, patent foramen oval occlusion and management of pulmonary embolisms and deep vein thrombosis.

Dr. Al-Khadra has served as the director of study design and statistical analysis for the Cardiovascular Research Network research group and is well published with over 40 publications. His areas of interest in research include preventive cardiology, coronary artery disease, chronic total occlusions and transcatheter aortic valve replacement. His research has been presented in national and international conferences and collected many awards over the years.

Also, Dr. Al-Khadra is a professional musician who enjoys writing and arranging music on top of playing multiple instruments, the guitar being his main.

James Feldman, MD, FACC, is an exceptional cardiologist at Memorial Katy Cardiology Associates in Houston, Katy and Cypress, Texas. 

Dr. Feldman was born in Houston, Texas. He grew up in the Memorial area and attended Memorial High School. He received his bachelor’s degree in Economics with honors from The University of Texas at Austin.

Dr. Feldman completed his medical training at Creighton University School of Medicine. He completed his Internal Medicine and Cardiology Fellowship at Baylor College of Medicine in Waco, Texas.  

Dr. Feldman is a board-certified cardiologist with a strong interest in medical imaging. He is also board certified in Echocardiography with Level III training. He is a proud fellow of the American College of Cardiology. 

Board-certified in cardiovascular disease, echocardiology, and internal medicine, Dr. Feldman’s clinical interests include cardiovascular diseases and internal medicine. He also has a strong interest in medical imaging.

Outside of his practice, Dr. Feldman’s favorite activity is spending time with his family.

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. 

Amir Kashani, MD, MS, FACC, is a well-trained cardiologist at Memorial Katy Cardiology Associates in Houston, Katy, and Sealy, Texas.

Dr. Kashani grew up in Houston, Texas, and attended Second Baptist Middle School and High School. He completed his Internal Medicine training at Rochester General Hospital through the University of Rochester School of Medicine in New York, where he also served as Chief Resident and Clinical Instructor. He attended Yale University School of Medicine in New Haven, Connecticut, for his cardiovascular and electrophysiology training. Dr. Kashani also trained in Interventional Cardiology at Baylor College of Medicine in Waco, Texas.

Throughout his career, Dr. Kashani has been heavily involved in clinical cardiovascular research. Amidst his over 30 publications, he has numerous collaborations with the TIMI Group, Harvard School of Medicine, and Yale School of Medicine, Section of Epidemiology and Public Health. He is an invited author of several books, and he has been invited to present his research both nationally and internationally. Dr. Kashani currently continues his academic interests as a Baylor College of Medicine teaching faculty. 

Dr. Kashani remains active by enjoying a variety of sports. Also, he and his wife have a special interest in community service. Dr. Kashani is the President, Founder, and member of several charity organizations in Houston. One major focus of the charity organization that Dr. Kashani has established is providing health care to underprivileged children in Houston.