David J. Zetter CPMSM, PESC is an expert in credentialing and provider/payer enrollment with over 23 years of experience in the healthcare industry. David J. Zetter has a deep understanding of Medicare & Medicaid enrollment and is a nationally certified credentialing manager and provider enrollment specialist. Through, YS Credentialing PLLC, David J. Zetter helps organizations develop and implement best practices guidelines and processes. Guides the credentialing and payer enrollment structure. Thrives on training and growing administrative, credentialing and enrollment healthcare professionals.