The current location address for Claydon Medical Group Inc is 150 Catherine Ln Ste B, , Grass Valley, California and the contact number is 530-271-2100 and fax number is 530-271-2200. The mailing address for Claydon Medical Group Inc is 150 Catherine Ln Ste B, , Grass Valley, California - 95945-5719 (mailing address contact number - 530-271-2100)..