David Rosenhan was born in 1929.
David Rosenhan died in 2012.
See the website linked below.
In terms of what they examined, no. Milgram examined submission to authority while Rosenhan studied the stickiness of psychological diagnoses. I would say that they are similar in that they have met with much debate, were influential studies, and that they would probably not be approved by ethics boards for repetition today.
The pseudo-patients in David Rosenhan's study were diagnosed with psychiatric disorders, admitted to various mental hospitals, and discharged with a diagnosis of schizophrenia in remission. Their experiences highlighted flaws in psychiatric diagnosis and treatment, as well as the challenges of distinguishing between sanity and insanity in a hospital setting.
Eleazar David David was born in 1811.
David Stock was born in 1939.
David Will was born in 1936.
David Elsworth was born in 1939.
David Walder was born in 1928.
David Maddocks was born in 1983.
Daniel David was born in 1970.
Pierre David was born in 1944.