MR. WILLIAM R MONTGOMERY M. A. , LPC, CCJP
NPI 1790934792
Counselor - Professional in Saint Louis, MO

NPI Status: Active since September 15, 2008

Contact Information

4320 HARTFORD ST # 1F
SAINT LOUIS, MO
ZIP 63116
Phone: (314) 771-6742
Fax: (314) 436-1887

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  • Individual
  • Male
  • Counselor
  • Professional

About WILLIAM MONTGOMERY

This page provides the complete NPI Profile along with additional information for William Montgomery, a provider established in Saint Louis, Missouri with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1790934792 assigned on September 2008. The practitioner's primary taxonomy code is 101YP2500X with license number 2001018058 (MO). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1790934792
Provider Name
MR. WILLIAM R MONTGOMERY M. A. , LPC, CCJP
Gender
Male
Entity Type
Individual
Location Address
4320 HARTFORD ST # 1F SAINT LOUIS, MO 63116
Location Phone
(314) 771-6742
Location Fax
(314) 436-1887
Mailing Address
4320 HARTFORD ST # 1F SAINT LOUIS, MO 63116
Mailing Phone
(314) 771-6742
Mailing Fax
(314) 436-1887
Is Sole Proprietor?
Yes
Enumeration Date
09-15-2008
Last Update Date
09-15-2008
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Counselor Professional

Taxonomy Code
101YP2500X
Type
Behavioral Health & Social Service Providers
License No.
2001018058
License State
MO

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1790934792, we treat the final digit (2) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 78. The final step is to find the difference between that total and the next multiple of ten (80 - 78 = 2).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
7
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
0
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
4
Doubled → 8
Pos 8
7
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
2
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 9 → 18 → 9 9 → 18 → 9 4 → 8 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 7 + 1 + 8 + 0 + 1 + 8 + 3 + 8 + 7 + 1 + 8 + 24 = 78

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 78 is 80. The difference is the calculated check digit.

80 - 78 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1790934792.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1790934792, enumerated as an "individual" on September 15, 2008.

The provider is located at 4320 HARTFORD ST # 1F SAINT LOUIS, MO 63116 and the phone number is (314) 771-6742.

Counselor with taxonomy code 101YP2500X and a focus in Professional.