"I think that the good climbing teams are very much more responsible (than in 1996). And I think there were climbing teams in which people were not responsible at all (this year)," he added. "On one end it's gotten better, but on the low end, it's worse."
Four people have died have on Everest this year, an 82-year-old Nepalese former minister hoping to become the oldest man to climb the mountain, a 59-year-old Japanese climber, a 55-year-old American and a 41-year-old Irishman.
All are thought to have died of acute mountain sickness, which can develop rapidly at altitude due to the lack of oxygen in the atmosphere. In severe cases, sufferers can develop swelling of the brain or fluid on the lungs.
Beidleman said his family was initially skeptical about his decision to return to Everest, but eventually came round to the idea.
His wife Amy is also a climber -- the pair got engaged during an expedition on Makalu, the world's fifth-highest mountain.
"I explained that I wanted to go back, and to guide, and I wanted to end up with Everest being a good experience, and not the one that ended in tragedy. I told them the circumstances, they understood," he said.