Is power draw always modeled in Op-Amp SPICE models?
Current draw / power in a SPICE model for an opamp macromodel is modeled for virtually all the real devices I have ever used, but beware; the values will be (almost universally) the typical values from the datasheet for quiescent draw and will use the nominal internal paths for all other power (such as output loading).

There are some models that do not have this information so be careful; the quiescent current will normally be a I device (current source) or a G device (Voltage controlled current source) and perusing the file can show if it is present (The G device in this model is used because it has a shutdown feature).

Here is an extract from the MAX4236 datasheet:



As you can see, the typical supply current is 350 uA.

Here is part of the SPICE model for the same part:


  *SUPPLY CURRENT
  
  *BIAS CURRENT
   DSUP 18 10 DB
  
  ISUP 10 18 0.1UA
  
  GSUP 10 18 52 20 350U


GSUP is indeed 350 uA in this model.

There is an excellent application note (somewhat old but still perfectly valid) that goes into some detail on just what is actually within the macromodels.

So generally the quiescent current is modeled but always check.

If the power pins are listed at the start of the file as they are here:


  
  
  Connections
  1  = OUT
  2  = VEE
  3  = IN+
  4  = IN- 
  5  = SHDN\
  6  = VCC
  
  
  
  
  .SUBCKT MAX4236 1 2 3 4 5 6


Then the quiescent current very probably is modeled.