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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.

Tomas G. Rios, MD, is a board-certified internal medicine specialist serving patients at Rios Healthcare Associates in Houston, Texas. He maintains the highest levels of accreditation and pursues continuing medical education to stay at the forefront of the latest trends in the medical field. 

Dr. Rios received his medical degree (MD) from Saint Louis University in Saint Louis, Missouri, in 2010 with a distinction in research. He completed residency training in internal medicine at the University of Texas Health Science Center Houston (UT Health) in Houston, Texas. He then completed an additional year of training in cardiovascular medicine at UT Health. 

During his time at UT Health, Dr. Rios gained invaluable experience with rotations at the University of Texas MD Anderson Cancer Center, the Texas Heart Institute/Baylor St Luke's  Medical Center, Memorial Hermann Health System, and Harris Health Lyndon B. Johnson Hospital in Houston, Texas.

In 2015, Dr. Rios started practicing as a hospitalist at Baylor St Luke's Medical Center. A quaternary care hospital, he gained additional experience in caring for the most critically ill patients requiring a multi-disciplinary approach to achieve the best outcomes.

In 2018, frustrated with the depersonalized nature of the current healthcare system, Dr. Rios sought to change the healthcare landscape. He imagined an industry where patients came first - above money and politics. Thus, he created Rios Healthcare Associates. Rios Healthcare Associates is where you can go for healthcare and know that your needs are the first priority.

Nicolin Neal, MD, is a board-certified internal medicine practitioner and an integral part of the team at Rios Healthcare Associates. By providing highly personalized primary care services to residents of Houston, Texas, and the surrounding region, Dr. Neal enhances the health and wellness of those in her care.

Education has always shaped Dr. Neal’s life. She earned her medical degree from Saint Louis University School of Medicine in Missouri. Dr. Neal went on to refine her knowledge and skills through training in internal medicine at the University of Texas at Houston and a fellowship in geriatric medicine at Baylor College of Medicine in Waco, Texas.

In her professional life, Dr. Neal has focused extensively on geriatric care. She’s presented research at the American Delirium Society National Conferences and has authored a chapter in Ethical Considerations and Challenges in Geriatrics, a textbook used to train medical professionals. She has also worked to educate medical colleagues in geriatric care.

Patients love working with Dr. Neal because of her warm and welcoming nature. She takes the time to get to know those in her care, listening to their concerns and exploring the ways their social, emotional, and mental health interact with their overall health and wellness. 

Through her work at Rios Healthcare Associates, Dr. Neal has the opportunity to create lasting change for her patients. She finds her work deeply rewarding and loves meeting new patients and welcoming them into the practice family.

The Simply Medicine Difference 

Welcome.  Simply Medicine is changing the face of medicine.  We are a combined Internal Medicine and Pediatrics concierge primary care practice.  This is the first practice of its kind serving Bellaire, and one of only a handful in the Houston area.  

Our mission is to simplify your life while improving your health.  Dr. Miller provides state-of-the-art medicine coupled with patient-centered, personalized care for the entire family.

To achieve this high standard of care, we do not accept insurance.  By eliminating the confines of insurance, Dr. Miller is able to see fewer patients, spend more time with each individual, provide higher quality care, and radically change the healthcare experience for her patients.  She has the flexibility to care for her patients in ways that simplify their lives and improve their health, like offering free in-home visits for newborns during their first month of life.

With a monthly membership fee, you have unlimited access to our services, including telemedicine visits, extended office visits, zero wait times, and 24/7 access to Dr. Miller’s personal cell phone, e-mail, and text.  All lab work and in-office testing, including COVID-19, are included.  No co-pays.  No elevator music or phone trees.

Dr. Miller completed two residency training programs at the prestigious Baylor College of Medicine.  She completed her Pediatrics residency and is a board certified Pediatrician.  She also completed her Internal Medicine residency and is a board certified Adult Internist.  She is able to provide expert care for the entire family, at every stage of life.

Your time is valuable.

Your health is imperative.

Your family is your life.

You deserve a trusted physician who can be there for you the moment you need her.

Learn More 

Malini Kumar, MD, is a family medicine physician and the director of Houston Testosterone Club and Wellness Center, an aesthetics and wellness center located in Houston, Texas.

Dr. Kumar received training at the LSU School of Medicine and has practiced medicine in the Greater Houston area for nearly 20 years.

Dr. Kumar has a unique interest in aesthetic medicine, but she's also deeply invested in the physical, emotional, and hormonal health of her patients.

After owning and operating her own med spa for three years, Dr. Kumar has now joined Houston Testosterone Club and Wellness Center to provide ultrasound skin tightening and hormone treatments to individuals living in and around Houston. 

Dr. Kumar believes that each patient should receive a personalized treatment plan to optimize their outward appearance and overall health. Dr. Kumar is a member of several professional organizations, including the Harris County Medical Society, the American Medical Association, the Texas Medical Association, and the American Academy of Family Practice. She is board certified by the National Board of Physicians and Surgeons.

To schedule an appointment with Dr. Kumar or learn more about the treatments available at Houston Testosterone Club and Wellness Center, call the office or book an appointment online today. 

Sayed Ahmed, MD, is a board-certified and fellowship-trained internal medicine physician at the Renal Clinic of Houston in Katy, Memorial City, and North Cypress, Texas.

Dr. Ahmed earned his bachelor’s degree at the University of Houston in Texas. He then traveled to the Caribbean to earn his doctorate at the Saba University School of Medicine in The Bottom, Saba, Dutch Caribbean.  He received specialized training in dialysis modalities, including hemodialysis, peritoneal dialysis, and continuous renal replacement therapies during his fellowship at Memorial Hermann Hospital-Texas Medical Center in Houston. He also received extensive fellowship training in the care of cancer patients with kidney disease and injury at the MD Anderson Cancer Center in Houston, Texas.

A diplomate of the American Board of Internal Medicine, Dr. Ahmed maintains Texas and Louisiana state medical licenses and is a member of the American Society of Nephrology and the American College of Physicians.

Dr. Ahmed enjoys table tennis, badminton, cricket, music, and traveling. He speaks English, Urdu, Hindi, Sindhi, and Punjabi.

Dr. Mukesh Sinha is a native Houstonian and completed his undergraduate degree at Texas A&M University in 2000. He is a 2004 graduate of The University of Texas Medical Branch, Galveston, TX. After his graduation, he relocated to Rochester, Minnesota, where he received his training in Internal Medicine at the internationally renowned Mayo Clinic. He remained at Mayo Clinic to complete his fellowship in the Division of Nephrology and Hypertension. During his fellowship he published several manuscripts and was appointed as Instructor of Medicine at the Mayo Clinic Graduate School of Medicine. He was honored with the Clinical Fellow of the Year Award for academic year 2009-2010. He joined Renal Clinic of Houston in 2010.

Dr. Sinha has his medical license in Minnesota and Texas. He is a member of the American Medical Association, American College of Physicians, American Association of Physicians of Indian Origin, American Society of Nephrology and Renal Physicians Association.

Dr. Sinha is board certified by American Board of Internal Medicine (ABIM) as a Diplomate in Nephrology.

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. 

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.

George Mammen, MD, FACC, is a talented cardiologist at Memorial Katy Cardiology Associates in Houston and Katy, Texas. 

Dr. Mammen grew up in Kerala, India, and earned his medical degree at Trivandrum Medical College in Thiruvananthapuram, India. Moving to the United States to continue his education, Dr. Mammen completed a residency in internal medicine at South Baltimore General Hospital in Maryland and a cardiology fellowship at St. Luke’s Episcopal Hospital, Texas Heart Institute in Houston.

Dr. Mammen is board-certified in internal medicine and cardiology. His clinical interests include interventional cardiology and cardiovascular disease, with a particular focus on invasive procedures such as angioplasty, stent implantation, and pacemakers. He is trained in all aspects of adult cardiology, with an emphasis on coronary artery disease and heart failure. He joined Memorial Katy Cardiology Associates in 1982. 

Dr. Mammen is active in hospital and physician affairs and has served as Chief of Cardiology at Memorial Hermann Memorial City Hospital and Medical Director of the ICU at Memorial Hermann Katy Hospital. When not at the office, Dr. Mammen’s personal interests include tennis and skiing. He likes to spend his spare time with his wife and three children.