Any doctor educated in the past two decades
  is well versed in genetic testing

I'm not sure what definition of "well versed in genetic testing" you had in mind but this is untrue for most or all reasonable definitions.

  any doctor specializing in areas where genetic testing
  is a frequently used aspect of planning/diagnosis
  (such as OB/GYN) will be highly familiar even if trained long ago.

Also an overstatement. The trouble is that "genetic testing" is a large and complex field. Are you referring to a single-gene test for a well-known and well-characterized disease? Or whole exome sequencing? Because in the coming years doctors will come into contact with both. In general these tests will require specialist interpretation; not general physicians or OB/GYNs.