3. John L. Chen, DO, is a board-certified anesthesiologist located in Fontana, CA, dedicated to providing advanced pain management and surgical care.
Operator computes a Health score every night at 2 am HST. It is the one number that tells you if this shop is winning, losing, or steady. Here is how John L. Chen, DO | Kaiser Permanente broke down on Apr 26, 2026.
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