Dominic Koh, MSN, CPNP, ANP-C. Nurse practitioner and APHCV's Director of Nursing, Dominic Koh has been with APHCV since 1997. He completed his nursing degree and a post master's certificate at Cal State University, Los Angeles. He is a Certified Pediatric Nurse Practitioner (CPNP) and an Adult Nurse Practitioner - Certified (ANP-C)..