The valid ideal number for this doctor is (B) BW2345785.
To find the ideal number:
Remember to perform the following steps to determine the validity of a DEA number.
Ascertain that the second letter of the DEA number corresponds to the first letter of a prescriber's last name - in this case, Williams as well as the second letter of the DEA number are "W."
Add together the first, third, and fifth numbers.
Ex. 2 + 4 + 7 = 13 Add together the second, fourth, and sixth numbers, then multiply by 2.
Ex. 3 + 5 + 8 = 6, 16 × 2 = 32 Add the values from steps 2 and 3, then verify that the last digit of the sum equals the seventh digit of the DEA number.
For example, 13 + 32 = 45, and the last number of Dr. William's DEA number is 5, indicating that this DEA number is valid.
Therefore, the valid ideal number for this doctor is (B) BW2345785.
