Dr. Oz might be hanging up his TV stethoscope and picking up a seat on Capitol Hill — the legendary daytime talk show host is mulling over a run for U.S. Senate … TMZ has confirmed. Sources connected to DO tell us … while it’s still early in the going and nothing is official just yet, the Doc is indeed seriously considering jumping into the race for next year’s midterms — and he has his home state of Pennsylvania in his sights.