ALEXANDER YERKES
NPI 1811340037
Hearing Instrument Specialist in Ventura, CA
NPI Status: Active since July 22, 2016
Contact Information
3555 LOMA VISTA RD STE 101
VENTURA, CA
ZIP 93003
Phone: (805) 232-9076
NPPES record last updated: July 22, 2016. Verified against the NPPES registry weekly; last sync: July 12, 2026.
- Individual
- Male
- Hearing Instrument Specialist
About ALEXANDER YERKES
This page provides the complete NPI Profile along with additional information for Alexander Yerkes, a provider established in Ventura, California with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1811340037 assigned on July 2016. The practitioner's primary taxonomy code is 237700000X with license number HA8114 (CA). The provider is registered as an individual and his NPI record was last updated 10 years ago.
- NPI
- 1811340037
- Provider Name
- ALEXANDER YERKES
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 3555 LOMA VISTA RD STE 101 VENTURA, CA 93003
- Location Phone
- (805) 232-9076
- Mailing Address
- 3555 LOMA VISTA RD STE 101 VENTURA, CA 93003
- Mailing Phone
- (805) 232-9076
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 07-22-2016
- Last Update Date
- 07-22-2016
- Code Navigator
Location Map
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.
- HA8114
- License State
- CA
- 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
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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 1811340037, 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 53 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1811340037, enumerated as an "individual" on July 22, 2016.
The provider is located at 3555 LOMA VISTA RD STE 101 VENTURA, CA 93003 and the phone number is (805) 232-9076.
Hearing Instrument Specialist with taxonomy code 237700000X.
