SYDNEY ELIZABETH LEWIS-BLOW
NPI 1023900552
Hearing Instrument Specialist in Yorktown, VA
NPI Status: Active since July 18, 2025
Contact Information
100 DELRAY DR APT I
YORKTOWN, VA
ZIP 23692
Phone: (757) 719-8637
- Individual
- Female
- Hearing Instrument Specialist
About SYDNEY LEWIS-BLOW
This page provides the complete NPI Profile along with additional information for Sydney Lewis-blow, a provider established in Yorktown, Virginia with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1023900552 assigned on July 2025. The practitioner's primary taxonomy code is 237700000X with license number 2101002300 (VA). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1023900552
- Provider Name
- SYDNEY ELIZABETH LEWIS-BLOW
- Other Name
- SYDNEY ELIZABETH CHERRY
- Other Name Type
- Former Name (1)
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 100 DELRAY DR APT I YORKTOWN, VA 23692
- Location Phone
- (757) 719-8637
- Mailing Address
- 100 DELRAY DR APT I YORKTOWN, VA 23692
- Mailing Phone
- (757) 719-8637
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-18-2025
- Last Update Date
- 07-18-2025
- 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.
- 2101002300
- License State
- VA
- 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 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 1023900552, 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 48. The final step is to find the difference between that total and the next multiple of ten (50 - 48 = 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.
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 48 is 50. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1023900552, enumerated as an "individual" on July 18, 2025.
The provider is located at 100 DELRAY DR APT I YORKTOWN, VA 23692 and the phone number is (757) 719-8637.
Hearing Instrument Specialist with taxonomy code 237700000X.
