About

BLACK BELT SPORTS MEDICINE

Black Belt Sports Medicine Systems was born from a passion for both martial arts and athlete care.

When I began competing as a blue belt in local Southern California events back in 1998, there was a noticeable lack of medical coverage for competitors. Despite the small scale of these events, I juggled both competition and providing medical care, experiences that ultimately shaped my professional journey and dedication to sports medicine today.

Dr. Ethan M. Kreiswirth oversees sports medicine education and clinical care for athletes. He also served as the Sports Medicine Consultant for King World Sports' Professional Boxing Program, Director of Sports Medicine at Velocity Sports in Redondo Beach. Additionally, he is the Medical Director and Coordinator for the United States Brazilian Jiu Jitsu Federation (USBJJF) and International Brazilian Jiu Jitsu Federation (IBJJF), providing medical support since the late 1990s.

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Founder + Instructor

Dr. Ethan Kreiswirth PhD, ATC

Dr. Kreiswirth’s career includes leading the Athletic Training Education Program at Concordia University, Irvine, and serving as Head Athletic Trainer at California State University, Dominguez Hills (CSUDH) for over a decade. His background also spans professional baseball and college football, reflecting a deep commitment to athlete health and rehabilitation.

Dr. Kreiswirth holds a PhD in Athletic Training from Rocky Mountain University of Health Professions, with a research focus on musculoskeletal injuries in Brazilian Jiu Jitsu fighters. He is certified in Functional Movement Systems and Selective Functional Movement Assessment and is an American Red Cross Professional Rescuer Instructor. His work has been published in peer-reviewed journals, and he is a national speaker on sports medicine topics related to Brazilian Jiu Jitsu.

This comprehensive experience, combined with a commitment to athlete health, drives Black Belt Sports Medicine Systems to deliver specialized care to martial artists and athletes at all levels.

OUR TEAM

OUR TEAM

Ceritfied Athletic Trainers

  • A woman with dark hair, wearing a black Nike polo shirt and gloves, stands with arms crossed in an indoor sports arena, looking off to the side.

    Norma B

    ATC

    Covering Black Sports Medicine events.

  • A young man smiling and wearing a red shirt, a purple glove on one hand, and carrying a black backpack with medical patches, standing indoors.

    Jacob Melgar

    ATC, DPT

    Jacob started with BJJ as a student and catapulted himself into a AT that covers multiple sports on the road.

  • A woman with black hair wearing a light blue button-up shirt and gray pants stands outdoors with arms crossed, smiling with a background of green trees.

    Gena Falgout

    ATC

    Gena jumped into action for her first IBJJF event in Sacramento this year.

  • Close-up of a smiling man with short blonde hair, blue eyes, and light skin, standing in front of a black background with yellow and white text.

    Dr. Brian Smith

    ATC

    Dr. Brain Smith covers IBJJF events for Black Belt Sports Med. Brian has a doctorate in health sciences and is an ATC. While Brian drives the MSAT at University of West Florida as full time faculty and Program Director.

  • Smiling woman sitting on a basketball court, wearing a red jacket with 'CSUN ATHLETE TRAINING' logo.

    Eira Perez

    DC, ATC

    New Team Member!

  • A smiling man with dark hair and a beard wearing a white shirt, standing against a gray wooden wall background.

    Ill Song

    DPT

    Another year of Jiu Jitsu mania trauma! Dr. Song likes to mix it up as a purple belt as well.

  • A man with glasses, a beard, and a shaved head, wearing a black shirt, appears to be attending an event or meeting, sitting and looking attentively to one side.

    Anthony Vidali

    ATC

  • Man standing with arms outstretched on a blue and yellow martial arts mat at an arena, wearing a red t-shirt with black long sleeves underneath, and black pants, with IBJJF banners and digital screens displaying a grappling match in the background.

    Mr. Lonnie

    ATC

    on the travel medical squad for Worlds #IBJJF

  • An Asian woman with purple hair and a gray headband, wearing a red shirt with a wing and checkered flag logo, talking to a woman in black martial arts attire in a crowded indoor setting.

    Tori Lam

    ATC

  • Chris Ingstad

    DPT ATC

  • Brandi Ross

    MS, ATC

BJJ tournaments we service

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Silhouette of a person standing on the edge of a cliff, looking at a mountain landscape in background, with clouds and sky above.
Logo of the National Athletic Trainers’ Association, featuring the acronym NATA, a medical Caduceus symbol, and the full organization name below.