MR. WILLIAM H. EICHHOLD SR. RDO
NPI 1841547734
Technician/Technologist - Optician in Brighton, MA

NPI Status: Active since August 09, 2012

Contact Information

280 WASHINGTON ST
SUITE 310
BRIGHTON, MA
ZIP 02135
Phone: (617) 254-2020

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  • Individual
  • Male
  • Technician/Technologist
  • Optician

About WILLIAM EICHHOLD

This page provides the complete NPI Profile along with additional information for William Eichhold, a provider established in Brighton, Massachusetts with a medical specialization in Technician/technologist, focusing in optician . The healthcare provider is registered in the NPI registry with number 1841547734 assigned on August 2012. The practitioner's primary taxonomy code is 156FX1800X with license number 1612 (MA). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI
1841547734
Provider Name
MR. WILLIAM H. EICHHOLD SR. RDO
Gender
Male
Entity Type
Individual
Location Address
280 WASHINGTON ST SUITE 310 BRIGHTON, MA 02135
Location Phone
(617) 254-2020
Mailing Address
280 WASHINGTON ST SUITE 310 BRIGHTON, MA 02135
Mailing Phone
(617) 254-2020
Is Sole Proprietor?
Yes
Enumeration Date
08-09-2012
Last Update Date
08-09-2012
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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

Technician/Technologist Optician

Taxonomy Code
156FX1800X
Type
Eye and Vision Services Providers
License No.
1612
License State
MA
Taxonomy Description
Opticians help fit eyeglasses and contact lenses, following prescriptions from Ophthalmologists and Optometrists. They also help customers decide which eyeglass frame or contact lenses to buy.

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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 1841547734, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 8 + 1 + 1 + 0 + 4 + 1 + 4 + 7 + 6 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1841547734.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine
280 WASHINGTON ST, S-309
BRIGHTON, MA 02135
Internal Medicine
280 WASHINGTON ST, SUITE 208
BRIGHTON, MA 02135
Urology
280 WASHINGTON ST, STE. 207
BRIGHTON, MA 02135
Dentist (General Practice)
280 WASHINGTON ST, SUITE 301
BRIGHTON, MA 02135
Podiatrist
280 WASHINGTON ST, SUITE 202
BRIGHTON, MA 02135
Dermatology
280 WASHINGTON ST, SUITE 212
BRIGHTON, MA 02135
Ophthalmology
280 WASHINGTON ST, SUITE 308
BRIGHTON, MA 02135
Specialist
280 WASHINGTON ST
BRIGHTON, MA 02135
Acupuncturist
280 WASHINGTON ST, #204
BRIGHTON, MA 02135
Internal Medicine
280 WASHINGTON ST, #204
BRIGHTON, MA 02135
Urology
280 WASHINGTON ST, STE. 207
BRIGHTON, MA 02135
Social Worker (Clinical)
280 WASHINGTON ST, SUITE 305
BRIGHTON, MA 02135
Specialist
280 WASHINGTON ST
BRIGHTON, MA 02135
Specialist
280 WASHINGTON ST
BRIGHTON, MA 02135
Dermatology
280 WASHINGTON ST, SUITE 212
BRIGHTON, MA 02135
Acupuncturist
280 WASHINGTON ST, #202
BRIGHTON, MA 02135
Ophthalmology
280 WASHINGTON ST
BRIGHTON, MA 02135
Internal Medicine
280 WASHINGTON ST, SUITE 201
BRIGHTON, MA 02135
Durable Medical Equipment & Medical Supplies
280 WASHINGTON ST, SUITE #304A
BRIGHTON, MA 02135
General Acute Care Hospital
280 WASHINGTON ST, SUITE 309
BRIGHTON, MA 02135

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1841547734, enumerated as an "individual" on August 09, 2012.

The provider is located at 280 WASHINGTON ST SUITE 310 BRIGHTON, MA 02135 and the phone number is (617) 254-2020.

Technician/Technologist with taxonomy code 156FX1800X and a focus in Optician.