"Of the 547 pharmacies with questionable billing for compounded topical drugs, 154 were located in the New York, Houston, Detroit, and Los Angeles metropolitan areas. These four metropolitan areas had the highest numbers of pharmacies with questionable billing of any metropolitan areas in the Nation. The New York area had 81 pharmacies with questionable billing. Together, these pharmacies billed $67.6 million for compounded topical drugs, which is 21 percent of the total amount billed in the Nation. The majority of the pharmacies (51 of 81) each billed for an extremely high number of compounded topicals from a single prescriber. The Houston area had 32 pharmacies with questionable billing. These pharmacies accounted for two-thirds of the pharmacies in the area (32 of 48) that billed for compounded topicals. Many of the pharmacies with questionable billing (23 of 32) billed for extremely high dollar amounts per compounded topical drug. The Detroit area had 22 pharmacies with questionable billing. This represented almost half of the pharmacies (22 of 47) in the area that billed for compounded topicals. Like Houston, many of the pharmacies billed for extremely high prices. In fact, 18 Detroit-area pharmacies each billed more than $934 per compounded topical, on average. The Los Angeles area had 19 pharmacies with questionable billing. This represented almost half of the pharmacies in the area that billed for compounded topicals (19 of 45). Many of these pharmacies (17 of 19) billed for a high number of beneficiaries who received identical compounded topical drugs. 124 prescribers associated with these pharmacies raise particular concern A total of 124 prescribers"

quoted from report found here