Sandra A. Block, M.D.M.D.Unclaimed · claim itSleep Medicine (Neurology)Williamsville, NY29 years experienceCalculated from a graduation year of 1997, reported in the CMS National Downloadable File.(716) 630-1122NPI 1205806627View Profile Claim
Daniel I. Rifkin, MDMDUnclaimed · claim itSleep Medicine (Neurology)Williamsville, NY34 years experienceCalculated from a graduation year of 1992, reported in the CMS National Downloadable File.(716) 923-7326NPI 1386656494View Profile Claim
Daniel I Rifkin, MD, PCUnclaimed · claim itSleep Medicine (Neurology)Williamsville, NY20 years in businessThis organization has held a National Provider Identifier since 2006. That is when it registered with CMS, which may be later than the practice was founded.(716) 923-7326NPI 1730125139View Profile Claim
