MR. JOHN PAUL MOLENAAR MA, F-AAA
NPI 1174525299
Audiologist-Hearing Aid Fitter in San Diego, CA

NPI Status: Active since June 01, 2005

Contact Information

4060 4TH AVE
STE 410A
SAN DIEGO, CA
ZIP 92103
Phone: (619) 298-8546

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  • Individual
  • Male
  • Audiologist-Hearing Aid Fitter

About JOHN MOLENAAR

This page provides the complete NPI Profile along with additional information for John Molenaar, a provider established in San Diego, California with a medical specialization in Audiologist-hearing Aid Fitter. The healthcare provider is registered in the NPI registry with number 1174525299 assigned on June 2005. The practitioner's primary taxonomy code is 237600000X with license number HA6015 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1174525299
Provider Name
MR. JOHN PAUL MOLENAAR MA, F-AAA
Gender
Male
Entity Type
Individual
Location Address
4060 4TH AVE STE 410A SAN DIEGO, CA 92103
Location Phone
(619) 298-8546
Mailing Address
4066 ALBATROSS ST APT 24 SAN DIEGO, CA 92103
Is Sole Proprietor?
Yes
Enumeration Date
06-01-2005
Last Update Date
09-11-2025
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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

Audiologist-Hearing Aid Fitter

Taxonomy Code
237600000X
Type
Speech, Language and Hearing Service Providers
License No.
HA6015
License State
CA
Taxonomy Description
An audiologist/hearing aid fitter is the professional who specializes in evaluating and treating people with hearing loss, conducts a wide variety of tests to determine the exact nature of an individual's hearing problem, presents a variety of treatment options to patients, dispenses and fits hearing aids, administers tests of balance to evaluate dizziness and provides hearing rehabilitation training. This classification should be used where individuals are licensed as audiologist-hearing aid fitters as opposed to states that license individuals as audiologists.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1231H00000XSpeech, Language and Hearing Service Providers

Audiologist

AU2293 (CA)

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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 1174525299, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
1
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
4
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
2
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
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 5 → 10 → 1 5 → 10 → 1 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 4 + 4 + 1 + 0 + 2 + 1 + 0 + 2 + 1 + 8 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1174525299.

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Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1174525299, enumerated as an "individual" on June 01, 2005.

The provider is located at 4060 4TH AVE STE 410A SAN DIEGO, CA 92103 and the phone number is (619) 298-8546.

Audiologist-Hearing Aid Fitter with taxonomy code 237600000X.