SIO NGA CHAO, OTR/L, CPAM appears in the CMS NPPES registry as a Occupational Therapist provider holding OTR/L, CPAM credentials at 10124 VISTA DR, CUPERTINO, CA, 95014, with a listed phone of (408) 873-9967. NPI 1174854160 was issued on 01/15/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAO most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

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 Occupational Therapist providers operate outside Part D entirely.

Occupational Therapist is a high-volume specialty nationwide, with 128,802 enrolled providers across 55 states and an average of 527 Part D claims per prescriber, 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.