Welcome to Our Practice

Welcome to Children's Healthcare Medical Associates, Your Pediatrician in San Diego, CA

Welcome to Children's Healthcare Medical Associates, where San Diego children come first, and where pediatricians and patients work together to provide exceptional medical care for kids in the area. We pride ourselves on providing compassionate, comprehensive services to children from birth through adolescence, and we're glad you've chosen us as your child's medical home.

Please take a few moments to read through our website to get a better feel for Children's Healthcare Medical Associates capabilities and services. Our website provides you with the important background about our pediatricians, staff, office hours, financing policies, appointment procedures, maps, directions to our office and other useful information.

We know how hectic life can be and are committed to making our practice convenient and accessible for your family. We want you to feel confident that when you choose us as your child's primary physician, you're working with professionals who are qualified, experienced and caring. We do this by equipping you with the support and resources you need to make the most educated decisions about your child's health. Our services include tongue-tie treatment, adolescent and teen eating disorders, circumcisions, teen emotional health, & more!

We want to thank you for choosing us for your child's medical care and welcome you to our practice. We can assure you that you'll feel confident in our ability to meet and exceed all of your expectations. Please call our office if you have any questions.

Meet Our Providers

  • Dr.
    Stephen H. Carson

    Dr. Stephen Carson has been practicing pediatrics for over 37 years and supervises the Asthma Management Program of Children’s Healthcare Medical Associates.
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  • Dr.
    Nicole M. Hibbs

    From the time she was a child, Dr. Nicole Hibbs aspired to take care of children as a pediatrician. While other medical specialties were tempting as career choices during training, the resilience and ...
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  • Dr.
    Karen S. Loper

    Dr. Karen Loper has been a pediatrician specializing in Adolescent Medicine for over 20 years. She knew that she wanted to be a pediatrician by the time she was 8 years old. Growing up in a
    Read More

  • Dr.
    Alisa Lawrie

    Dr. Lawrie received her undergraduate degree in Human Biology from Stanford University.  She then attended University of Colorado School of Medicine and completed her pediatric residency at the University of Iowa.  After completing her training... Read more

  • Dr.
    Alison Zachry

    Dr. Zachry is a board-certified pediatrician and Southern California native. She has been practicing pediatric medicine for over 10 years. Dr. Zachry believes in the importance of supporting families in raising healthy and.. Read More

  • Aimee Yager
    Nurse Practitioner

    Aimee Yager is a board-certified Pediatric Nurse Practitioner. Her focus is on the growth and development of children of all ages.  She loves working with families to promote healthy...
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  • Tiffany Sena
    Nurse Practitioner

    Tiffany Sena is from the San Francisco Bay Area.  She attended Hawaii Pacific University graduating with a BS in Finance and received her BSN from National University.  In 2006, she became... Read More

  • Gracie Streeter
    Lactation Specialist

    Gracie has over 20 years of experience working with mothers and their babies as a maternity healthcare professional. Read More


  • "Dr. Carson is extremely kind and takes his time with each patient. By far the best doctor and I trust him caring for my daughter. Highly recommend him."
    Alex H. 2020
  • "We have been bringing our kids here for 6 years now and have loved it! As a fellow physician , I appreciate what a well-run office it is and how caring the staff and physicians are."
    Samantha H. 2020
  • "We've had such a great experience with Dr. Hibbs. She listens well and takes time to answer questions, brainstorm solutions, etc. She provides her professional opinion in a courteous manner and respects our input as well. Dr Hibbs is great with my kids--she's kind, interactive and approachable and they definitely feel comfortable with her. We've had a wonderful experience with Dr. Hibbs and highly recommend her to others. We've had a positive experience with Children's Medical overall as well--all office staff have been friendly and helpful. Although appointments sometimes run late, we've never had to wait a long time. We're very happy here."
    Shawna M. 2020
  • "Have great triage and night/weekend appointments for urgent issues which can avoid a trip to urgent care. This has been a huge relief to me as a parent. When you are feeling unsure if something is urgent, they are there to support you and you don't have to wait long to get competent advice. The doctors are great for routine things and also helped get to the bottom of a difficult to diagnose issue with one of my kids. I moved and the clinic is a bit far for me but I will keep going there rather than switch to a M-F 8-5."
    Melinda V. 2019
  • "Dr. Tammy Nakahara is an amazing doctor. She has been my children's doctor for over 15 years. She has extreme interest in their health and likes to take the less medicine as possible route, natural, and I appreciate that!"
    Shannon C. 2019

Our Location

Find us on the map

Get to Know Us

Children's Healthcare Medical Associates

550 Washington Street

Suite 300

San Diego, CA 92103

(619) 297-5437

Hours of Operation

Our Regular Schedule


8:30 am-5:00 pm


8:30 am-5:00 pm


8:30 am-5:00 pm


8:30 am-5:00 pm


8:30 am-5:00 pm