This correlation has been frequently used by researchers and evaporation model of fluent itself based on this correlation. It is rather difficult to say, but i think it holds good for nucleate boiling, since after using this relation you may feel that mostly bubbles are nucleating at wall, rather than single bubble is growing.

Experimental researchers like me refer to M.Shah.  His graphical and equations cover many commenly used surface - fluids and range between nucleate boiling to dryouts.  Dr.S.Ravindran

As rightly pointed out by Yogesh, this simple temperature driven semi empirical mass transfer mechanism is widely used for modelling vaporization process however the accommodation coefficient values are very loosely set and hard to find for other fluids except water. Even for water, this value otherwise known as evaporation coefficient varies widely (0.001 - 1.0) at different temperature.

I won't say that this is good for nucleate boiling or film boiling in a strict sense since the surface effect is not at all included in this model. However for evaporation at interface without boiling (below saturation temp.) this can be used since this actually presents a molecular flux of the vapour molecule leaving/absorbing onto the interface.