Erin Kosak, NP appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider holding NP credentials at 109 WAPPOO CREEK DR, Charleston, SC, 29412, with a listed phone of (843) 796-7171. NPI 1003276676 was issued on 02/25/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Kosak 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 records for calendar year 2023 show 915 prescription claims written by this provider, covering 108 Medicare beneficiaries and totaling roughly $123K in drug spend, split 19% brand-name and 79% generic by claim count, with an opioid prescribing rate of 2.2%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,138 enrolled providers across 54 states and an average of 1,363 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.