The best replacement for scrubs is grey's anatomy.

The best alternatives to scrubs are rated as following:
★★★★★  grey's anatomy
★★★  how i met your mother
★★  sugar scrubs
★★  salt scrubs
★★  uniforms
★★  community
★  medical uniforms
★  pigeons
★  psych
★  no pigeons
★  green wing
★  green
  nursing uniforms
  house md
  hats
  two and a half men
  arrested development
  smocks
  greys anatomy
  green scrubs

Your alternative for scrubs is not listed? Suggest!
Speaking about scrubs, one probably shouldn't forget about janitor.

Other search terms related to scrubs and their ratings are:
★★★★★ janitor
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Google Trends

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scrubs
grey's anatomy
how i met your mother