NPI Number Validation Tool
NPI NUMBER 1649791955 IS VALID
The NPI number 1649791955 is valid and registered in the National Plan & Provider Enumeration System registry. The NPI is assigned to the following provider:
STEVEN ROBERTS
Counselor - Mental Health
Business Address
770 WOODLANE RD
WESTAMPTON, NJ
ZIP 08060
Phone: (609) 267-5928
NPI Validation Check Digit Calculation
The following table explains step by step the NPI validation process using the Luhn algorithm:
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 6 | 4 | 9 | 7 | 9 | 1 | 9 | 5 | 5 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 6 | 8 | 9 | 14 | 9 | 2 | 9 | 10 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 6 + 8 + 9 + 1 + 4 + 9 + 2 + 9 + 1 + 0 + 24 = 75 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 80 - 75 = 5 | 5 | ||||||||
The NPI number 1649791955 is valid because the calculated check digit 5 using the Luhn validation algorithm matches the last digit of the original NPI number.
