IAN MAREK MISHLER BC-HIS
NPI 1669943221
Hearing Instrument Specialist in Bath, ME

NPI Status: Active since December 07, 2018

Contact Information

99 COMMERCIAL ST STE 102
BATH, ME
ZIP 04530
Phone: (207) 200-3163

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  • Individual
  • Male
  • Hearing Instrument Specialist

About IAN MISHLER

This page provides the complete NPI Profile along with additional information for Ian Mishler, a provider established in Bath, Maine with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1669943221 assigned on December 2018. The practitioner's primary taxonomy code is 237700000X with license number DL443 (ME). The provider is registered as an individual and his NPI record was last updated March 2026.

NPI
1669943221
Provider Name
IAN MAREK MISHLER BC-HIS
Gender
Male
Entity Type
Individual
Location Address
99 COMMERCIAL ST STE 102 BATH, ME 04530
Location Phone
(207) 200-3163
Mailing Address
51 BOG RD DRESDEN, ME 04342
Mailing Phone
(207) 481-3451
Mailing Fax
Is Sole Proprietor?
No
Enumeration Date
12-07-2018
Last Update Date
03-07-2026
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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.
DL443
License State
ME
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 1669943221, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
6
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
4
Unchanged
Pos 7
3
Doubled → 6
Pos 8
2
Unchanged
Pos 9
2
Doubled → 4
Check
1
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 6 → 12 → 3 9 → 18 → 9 3 → 6 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 2 + 9 + 1 + 8 + 4 + 6 + 2 + 4 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1669943221.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Hearing Instrument Specialist
99 COMMERCIAL ST STE 102
BATH, ME 04530

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1669943221, enumerated as an "individual" on December 07, 2018.

The provider is located at 99 COMMERCIAL ST STE 102 BATH, ME 04530 and the phone number is (207) 200-3163.

Hearing Instrument Specialist with taxonomy code 237700000X.