### Question
How is the term opt-out physician or practitioner defined?


### Answer
The term **opt-out physician or practitioner** is defined in *42 U.S.C. § 1395a* as the following:

> a physician or practitioner who has in effect an affidavit under paragraph (3)(B)

#### Citation:
  - *42 U.S.C. § 1395a*
  - Heading: **CHAPTER 7-SOCIAL SECURITY > SUBCHAPTER XVIII-HEALTH INSURANCE FOR AGED AND DISABLED**

