It appears that his highest rating was 1944, but that he is now in the high 1800's. Below are the results of a search I entered:
The Chinese Dragon - by Raymond Pearson. The Chinese Dragon refers to the chess position shown here, where Black has just played 10...
[Search domain
www.sicilianchinesedragon.com] sicilianchinesedragon.com
The Fighting Dragon - Part 7: The Chinese Dragon - Chess Videos - Chess.com
I viewed this video and then bought the excellent book on the Chinese Dragon by Raymond Pearson. We are working hard to make Chess.com available in over 70 languages.
[Search domain
www.chess.com] chess.com
Raymond Pearson @SicilianChinese - Twitter. Author of the chess book The Chinese Dragon and audio volunteer for the Braille Chess Association.
[Search domain ppfinder.com] ppfinder.com
The Four Nations Chess League Rounds 3-4 (2014) - Chess-DB.com
Browse chess games played in the tournament The Four Nations Chess League. Participants. 1803018. Raymond Pearson. 1944. 0.
Intriguing. Has anyone else found out anything more? Being a lower B player I withhold any judgements.