About Us

When you bring your child to our office, you can expect excellent medical care, convenient service, a friendly and respectful environment, as well as resources and counsel on raising healthy and happy children.

We focus on the whole child, looking at the physical, mental, emotional and social issues that may affect your child’s growth.


Dr. Meena Chintapalli has been practicing pediatrics for over 30 years. She received her Bachelors of Medicine and Surgery from Osmania University in Hyderabad, India and completed her Residency training in Pediatrics from Howard University in conjunction with D.C. General Hospital. Dr. Chintapalli started her medical practice in Milwaukee, WI, and has been practicing in San Antonio (mostly as a solo practitioner) since 1989.

Over the years, Dr. Chintapalli became passionate about asthma treatment and control as well as developmental and behavioral pediatrics. Her work with behavioral pediatrics led her to effectively incorporate into her treatment plans knowledge of experiential neuro-developmental organization of the brain. She educates her patients on brain development and adaptive bio-social behaviors through counseling and guidance with the hopes that these techniques will help bring out the natural genius of every child. This work resulted in her receiving the AMA award in 2008. Read More

Mohan Rayala (M.D. F.A.A.P.)

Dr. Mohan Rayala has been a practicing pediatrician for fifteen years. He received his M.B.B.S. from Guntur Medical College (Guntur, Andhra Pradesh, India) in 2000, and completed his Residency in Pediatrics at Andhra Medical College in 2003. After practicing for a brief period in India, Dr. Rayala moved to England in 2004 and pursued further training in the Neonatal Intensive Care Unit and practiced both community and hospital pediatrics. He was awarded prestigious membership into the Royal College of Physicians and Child Health.

In 2009, Dr. Rayala moved to the United States, where he completed an additional Residency in Pediatrics at the State University of New York in 2011. He then moved to the Greater Boston area, where he practiced at Chelmsford Pediatrics from 2011 until 2015. Dr. Rayala, his wife, and two children decided to move down south to enjoy snow-free winters and the beautiful (for most of the year!) South Texas weather. Read More

May Zamuco, (M.D.F.A.A.P.)

Jennifer Marek (CPNP)


PNP – Pediatric Nurse Practitioner

Kristi received her Bachelor of Science in Nursing from the University of Incarnate Word and her Master of Science in Nursing from the University of Texas Health Science Center in San Antonio. Prior to joining A thru Z, Kristi worked as a nurse practitioner at Aguirre Practice of Medicine, Clinica del Norte Pediatrics, Little Spurs Urgent Care, and as a registered nurse in the Santa Rosa Children’s Hospital E.R. Kristi is a member of the National Association of Pediatric Nurse Practitioners (NAPNAP). Kristi has been married for 12 years and has 2 boys and 1 girl. In her “free” time, she plays keyboard for a Worship Team called The Burning Ones.

If she had to give one tip to every parent, Kristi says, “LOVE your children. Hold them, hug them, kiss them, and tell them how beautiful they are everyday.”

Our Team

Dr H Levcovitz

Dr May Zamuco

Dr Mohan Rayala

Jennifer Marek (CPNP)

Cheryl Defontaine (PNP)


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