Dr. Toni Kim

Dr. Toni Kim

Founder & Board-Certified Pediatric Endocrinologist Dr. Toni Kim is a board-certified pediatric endocrinologist and the founder of Life Pediatric Endocrinology, a boutique specialty practice dedicated to personalized hormone and diabetes care for children and teens. With a whole-child approach, Dr. Kim empowers families to navigate complex endocrine conditions—from growth and puberty concerns to thyroid, adrenal, and diabetes management—with clarity, compassion, and direct access to expert care. She looks at growth and puberty issues through a unique lens and helps families navigate with "outside-the-box" thinking. She sees patients across the U.S., offering a high-touch model that helps children flourish physically and emotionally. Her mission is simple: help every child live fully and thrive with confidence.

Posts by Dr. Toni Kim

Why Is POTS Worse in the Morning Before School?
Teen with POTS struggling with morning fatigue before school, with water, salt, breakfast, and a backpack ready for the school day.

Why Is POTS Worse in the Morning Before School?

Sep 7, 2026 4 min read
How Much Salt and Water Does a Teen With POTS Need?
Teen with POTS drinking water alongside salty foods as part of an individualized hydration and sodium plan for POTS symptom management.”

How Much Salt and Water Does a Teen With POTS Need?

Sep 7, 2026 4 min read
Will My Teen Grow Out of POTS?
Teen with POTS resting outdoors with a water bottle and school backpack while managing POTS symptoms and recovery during adolescence.

Will My Teen Grow Out of POTS?

Sep 7, 2026 4 min read
What Triggers MCAS Flares in Kids?
Child tracking MCAS flare triggers including heat, fragrance, stress, illness, hormones, sleep, exercise, and food additives in a symptom diary.

What Triggers MCAS Flares in Kids?

Sep 7, 2026 4 min read
Can Kids Have MCAS and Hypermobile Joints Too?
Child with hypermobile joints stretching while illustrating the overlap of flexible joints, MCAS symptoms, and POTS symptoms in children.

Can Kids Have MCAS and Hypermobile Joints Too?

Sep 7, 2026 4 min read
Should Kids With MCAS Try a Low Histamine Diet?
Child with MCAS preparing nutritious foods with her mother while trying a supervised low histamine diet that supports healthy growth.

Should Kids With MCAS Try a Low Histamine Diet?

Sep 7, 2026 4 min read
MCAS vs Allergies in Kids: Why Tests Come Back Normal
Child with a negative allergy panel being evaluated for food allergy versus mast cell activation syndrome, or MCAS.

MCAS vs Allergies in Kids: Why Tests Come Back Normal

Aug 31, 2026 6 min read
Flushing, Hives, and Tummy Pain Together: Is It MCAS?
Illustration of flushing, hives, belly pain and other multi-system symptoms that may occur during mast cell activation episodes in children.

Flushing, Hives, and Tummy Pain Together: Is It MCAS?

Aug 31, 2026 6 min read
What Does a Tryptase Test Mean in a Child?
Baseline and flare tryptase testing showing why a normal tryptase result does not rule out MCAS in children.

What Does a Tryptase Test Mean in a Child?

Aug 31, 2026 6 min read
POTS or Anxiety? Why a Teen's Heart Rate Jumps Standing
Teen having heart rate and blood pressure measured while standing to evaluate POTS symptoms versus anxiety.

POTS or Anxiety? Why a Teen's Heart Rate Jumps Standing

Aug 31, 2026 6 min read