Yep, Lewontin appears to be saying similar things to Lipton, though it doesn't appear that the two have collaborated on any research. Lewontin is almost 80 and he's got top-notch credentials.

From Wikipedia:

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Along with others, such as Gould, Lewontin has been a persistent critic of some themes in neo-Darwinism; specifically, he has criticised sociobiologists and evolutionary psychologists such as Edward O. Wilson and Richard Dawkins, who attempt to explain animal behaviour and social structures in terms of evolutionary advantage or strategy—this has been controversial when applied to humans, because some see it as genetic determinism. Lewontin, in his writing, calls for what he considers a more nuanced view of evolution, which he claims requires a more careful understanding of the context of the whole organism as well as the environment.

also,

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In "Organism and Environment" in Scientia, and in more popular form in the last chapter of Biology as Ideology, Lewontin argued that while traditional Darwinism has portrayed the organism as passive recipient of environmental influences, a correct understanding should emphasize the organism as an active constructer of its own environment. Niches are not pre-formed, empty receptacles into which organisms are inserted, but are defined and created by organisms. The organism-environment relationship is reciprocal and dialectical. M.W. Feldman, K.N. Laland, and F.J. Odling-Smee among others have developed Lewontin's conception in more detailed models.

I can't stand Dawkins, so anyone who takes a stab at him is OK in my books.

One of Lewontin's books is called Biology as Ideology: The Doctrine of DNA, so like Lipton he rejects the prevailing paradigm of genetic determinism (and the research he's done seems to make him well-qualified to do so). He also cited the fact, as Lipton has, that the human genome project provided some shocking information for genetic determinists.

Basically, conventional thought held that the body needed one gene to provide the blueprint for each of the 100,000+ different proteins that make up our bodies, plus at least 20,000 regulatory genes, which orchestrate the activity of the protein-encoding genes. Scientists concluded that the human genome would contain a minimum of 120,000 genes located within the 23 pairs of human chromosomes.

However, they found that the human genome consists of approximately 25,000 genes -- only 20% of what was expected. Guess what else we've found out? A microscopic nematode roundworm called Caenorhabditis has 24,000 genes. And the rather-more-complicated fruitfly has 15,000. This kind of hard data cannot be ignored and is going to have to force scientists to change their persepctive on things.

Just to add, for other alt med enthusiasts here -- Lewontin appears to also believe that the environment was the cause of the decline of several virulent diseases in the human population, and not vaccines.