Related Clues:
- OR personnel
- Columnists, in a way, in this puzzle's four longest answers
- H.M.O. figures
- EKG readers
- M.R.I. readers
- Online Q&A session
- Powerful advocacy gp
- Reddit Q&A session, briefly
- Quack stopper, for short
- Org. for 45-Across
- Physicians' medical gp
- Org. with a Staff of Aesculapius logo
- Org. with a caduceus in its logo
- Doc's gp
- OB/GYN's org