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The answer is yes. There is no code in California statutory law or administrative laws that specifically disallow a physician's office to charge a fee for enrolling a new patient, an administrative fee, etc. There is also something known as a "annual" fee, which is an administrative fee every year. See HERE.
However, many health plans will not cover administrative fees, or rather, only allow a certain percentage of the money to go towards administrative fees, under the Affordable Care Act.
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