John Dupler, PHD, BCN appears in the CMS NPPES registry as an EEG Technician provider holding PHD, BCN credentials at 16885 W BERNARDO DR STE 104, San Diego, CA, 92127, with a listed phone of (760) 703-4014. NPI 1407425051 was issued on 06/18/2021.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal, many EEG Technician providers operate outside Part D entirely.

EEG Technician is a narrow specialty nationwide, with 117 enrolled providers across 27 states, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.

Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.