I had a no-objection waiver myself, however my field of study allowed exemption.
I believe medical professions cannot be exempted with the No-Objection. This is an excerpt from the DOS website: "U.S. law does not allow foreign medical physicians to request waivers under this basis if they acquired J-1 status on or after January 10, 1977 for graduate medical education or training."
Take a look at Step 3 and see if you partner with qualify for another type of waiver: https://travel.state.gov/content/travel/en/us-visas/study/exchange/waiver-of-the-exchange-visitor/how-to-apply-waiver.html
