MR. JOHN R MAAS
NPI 1972796597
Hearing Instrument Specialist in Yakima, WA

NPI Status: Active since August 27, 2007

Contact Information

3810 KERN WAY STE B
YAKIMA, WA
ZIP 98902
Phone: (509) 248-0933
Fax: (509) 575-4763

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Hearing Instrument Specialist

About JOHN MAAS

This page provides the complete NPI Profile along with additional information for John Maas, a provider established in Yakima, Washington with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1972796597 assigned on August 2007. The practitioner's primary taxonomy code is 237700000X with license number HA00045688 (WA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI: 1972796597
Provider Name: MR. JOHN R MAAS
Gender: Male
Entity Type: Individual
Location Address: 3810 KERN WAY STE B YAKIMA, WA 98902
Location Phone: (509) 248-0933
Location Fax: (509) 575-4763
Mailing Address: 3810 KERN WAY STE B YAKIMA, WA 98902
Mailing Phone: (509) 248-0933
Mailing Fax: (509) 575-4763
Is Sole Proprietor?: No
Enumeration Date: 08-27-2007
Last Update Date: 08-27-2007
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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: Hearing Instrument Specialist
Taxonomy Code: 237700000X
Type: Speech, Language and Hearing Service Providers
License No.: HA00045688
License State: WA
Taxonomy Description: Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is a designation provided individuals who qualify by the National Hearing Aid Society

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 1972796597, we treat the final digit (7) 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 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 7).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 12 → 1 + 2

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

Check

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 7 → 14 → 5 7 → 14 → 5 6 → 12 → 3 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 4 + 2 + 1 + 4 + 9 + 1 + 2 + 5 + 1 + 8 + 24 = 73

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

The next multiple of ten after 73 is 80. The difference is the calculated check digit.

80 - 73 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1972796597.