MR. LEON A. MARK M.ED-BCHIS
NPI 1902078488
Hearing Instrument Specialist in Brookline, MA

NPI Status: Active since March 25, 2008

Contact Information

1101 BEACON ST
BROOKLINE, MA
ZIP 02446
Phone: (617) 232-9182
Fax: (617) 232-5825

Get Directions Write a Review

  • Individual
  • Male
  • Hearing Instrument Specialist

About LEON MARK

This page provides the complete NPI Profile along with additional information for Leon Mark, a provider established in Brookline, Massachusetts with a medical specialization in Hearing Instrument Specialist. The healthcare provider is registered in the NPI registry with number 1902078488 assigned on March 2008. The practitioner's primary taxonomy code is 237700000X with license number 44 (MA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1902078488
Provider Name
MR. LEON A. MARK M.ED-BCHIS
Gender
Male
Entity Type
Individual
Location Address
1101 BEACON ST BROOKLINE, MA 02446
Location Phone
(617) 232-9182
Location Fax
(617) 232-5825
Mailing Address
1101 BEACON ST STE 8E BROOKLINE, MA 02446
Mailing Phone
(617) 232-9182
Mailing Fax
(617) 232-5825
Is Sole Proprietor?
No
Enumeration Date
03-25-2008
Last Update Date
03-25-2008
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.
44
License State
MA
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

Reviews for MR. LEON A. MARK M.ED-BCHIS

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1902078488, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
9
Unchanged
Pos 3
0
Doubled → 0
Pos 4
2
Unchanged
Pos 5
0
Doubled → 0
Pos 6
7
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
4
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
8
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 0 → 0 0 → 0 8 → 16 → 7 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 0 + 2 + 0 + 7 + 1 + 6 + 4 + 1 + 6 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1902078488.

Other Providers at the Same Location


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

Obstetrics & Gynecology (Gynecology)
1101 BEACON ST
BROOKLINE, MA 02446
Psychologist
1101 BEACON ST, SUITE 7W
BROOKLINE, MA 02446
Internal Medicine (Cardiovascular Disease)
1101 BEACON ST, SUITE 4E
BROOKLINE, MA 02446
Allergy & Immunology
1101 BEACON ST, SUITE 7 EAST
BROOKLINE, MA 02446
Internal Medicine (Cardiovascular Disease)
1101 BEACON ST, SUITE 703W
BROOKLINE, MA 02446
Physical Therapist
1101 BEACON ST, STE 5E
BROOKLINE, MA 02446
Psychologist (Clinical)
1101 BEACON ST, SUITE 7EAST
BROOKLINE, MA 02446
Surgery
1101 BEACON ST, SUITE 1W
BROOKLINE, MA 02446
Internal Medicine
1101 BEACON ST
BROOKLINE, MA 02446
Psychologist (Clinical)
1101 BEACON ST, SUITE 6EAST
BROOKLINE, MA 02446
Psychologist (Clinical)
1101 BEACON ST, SUITE TWO EAST
BROOKLINE, MA 02446
Physical Therapist
1101 BEACON ST
BROOKLINE, MA 02446
Psychologist
1101 BEACON ST, SUITE 8 EAST
BROOKLINE, MA 02446
Psychologist (Clinical)
1101 BEACON ST, SUITE 7W
BROOKLINE, MA 02446
Physical Therapist (Orthopedic)
1101 BEACON ST
BROOKLINE, MA 02446
Optometrist
1101 BEACON ST, SUITE 6 WEST
BROOKLINE, MA 02446
Psychiatry & Neurology (Psychiatry)
1101 BEACON ST, SUITE 2E
BROOKLINE, MA 02446
Psychiatry & Neurology (Neurology)
1101 BEACON ST, SUITE 2W
BROOKLINE, MA 02446
Psychiatry & Neurology (Psychiatry)
1101 BEACON ST, SUITE 3 EAST
BROOKLINE, MA 02446
Dermatology
1101 BEACON ST, SUITE 1E
BROOKLINE, MA 02446

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1902078488, enumerated as an "individual" on March 25, 2008.

The provider is located at 1101 BEACON ST BROOKLINE, MA 02446 and the phone number is (617) 232-9182.

Hearing Instrument Specialist with taxonomy code 237700000X.