Jackson said he's confident that Trump has a "very strong and a very probable possibility of making it completely through his presidency with no serious medical issues".
Dr Jackson said he talks daily with Mr Trump "and I have found no reason whatsoever to think that the president has any issues whatsoever with his thought process".
Dr Jackson said the test, known as the Montreal Cognitive Assessment, was done at Mr Trump's behest because he wanted to put an end to speculation about his mental health, which his critics repeatedly question.
CNN chief medical correspondent Sanjay Gupta said Jackson's information indicated that the President, like most men of his age, has a common form of heart disease.
Trump responded by claiming to be a "very stable genius".
"I mean I walk, I this, I that", Trump said. His cholesterol was 223, which is higher than recommended - as such, the president takes Crestor, a cholesterol-lowering medication.
When asked how someone who consumes McDonald's, fried chicken, and Diet Coke but hardly exercises could be in such good health, Jackson replied, "it's called genetics". The president weighs 239 pounds-just one pound away from being considered "obese" on the body mass index-and is taking medications to lower his cholesterol and to prevent hair loss, the doctor said. "He's just one of those people, I think, that does not require a lot of sleep".
Trump is the first president to undergo the memory screening, Jackson said.
Expected to attend: senior White House officials, such as Ivanka Trump, the President's daughter and senior adviser, communications director Hope Hicks, press secretary Sarah Sanders and counselor to the President Kellyanne Conway as well as Cabinet members Secretary of Department of Homeland Security Kirstjen Nielsen and Secretary of Transportation Elaine Chao.
"As part of an ongoing conversation this administration has been having with American women there will be a focus on the economy, health care and national security during the President's first year in office", Walters said.