The American College of Obstetricians and Gynocologists (ACOG) is not a fan of bioidentical hormones. Not even close. I think a lot of it has to do with them being in the pocket of the pharmaceutical industry, but whatever the reason, way too many women go to their gynocologists looking for help with bioidentical hormones for their menopausal difficulties, and are flatly told that compounded medications are useless, dangerous, not regulated, I've heard a dozen different lines.
Peter Koshland at Koshland's Pharmacy is an expert on bioidenticals, and I have tapped into his expertise several times regarding issues relating to compounded medications. He has written an excellent post about ACOG's position on bioidenticals on his blog The Compounder's Forum. Be sure to read it, and perhaps even make a copy of it to present to the next doctor who tells you about the "dangers" of compounded medications.