Michael G. Chen, M.D.M.D.Unclaimed · claim itRadiation OncologySanta Rosa, CA18+ years experienceRegistered with an NPI since 2008. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(707) 537-8068NPI 1417104720View Profile Claim
Cindy O. Scharfen, M.D.M.D.Unclaimed · claim itRadiation OncologySanta Rosa, CA38 years experienceCalculated from a graduation year of 1988, reported in the CMS National Downloadable File.(707) 528-1050NPI 1861582322View Profile Claim
Frederick C. David, M.D.M.D.Unclaimed · claim itRadiation OncologySanta Rosa, CA50 years experienceCalculated from a graduation year of 1976, reported in the CMS National Downloadable File.(707) 528-1050NPI 1982793808View Profile Claim