Simpson confirmed news of his cancer diagnosis in November
Joe Simpson is cancer-free after receiving radiation treatments, a rep confirms to PEOPLE.
“He’s feeling great now and is optimistic,” a source close to Simpson told PEOPLE at the time. “He’s felt so much love and support from his family and friends.”
He began radiation treatment in February. Simpson recently celebrated his granddaughter Maxwell’s birthday in early May.
Simpson also celebrated Easter with his family and has continued his photography career.
Both of Simpson’s famous daughters attended the opening of Dream Works, his first-ever photography gallery exhibit, in Los Angeles in early 2016.
Of photography, Simpson told PEOPLE at the time, “There is something about taking pictures that makes me happy, and it has always been a hobby for me.”
- Reporting by GILLIAN TELLING