DR. GARY MARK LAZAROFF DMD
NPI 1720101959
Dentist - Endodontics in Providence, RI

NPI Status: Active since April 10, 2007

Contact Information

257 WAYLAND AVENUE
PROVIDENCE, RI
ZIP 02906
Phone: (401) 272-1380
Fax: (401) 272-1387

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  • Individual
  • Male
  • Dentist
  • Endodontics

About GARY LAZAROFF

This page provides the complete NPI Profile along with additional information for Gary Lazaroff, a provider established in Providence, Rhode Island with a medical specialization in Dentist, focusing in endodontics . The healthcare provider is registered in the NPI registry with number 1720101959 assigned on April 2007. The practitioner's primary taxonomy code is 1223E0200X with license number 1815 (RI). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1720101959
Provider Name
DR. GARY MARK LAZAROFF DMD
Gender
Male
Entity Type
Individual
Location Address
257 WAYLAND AVENUE PROVIDENCE, RI 02906
Location Phone
(401) 272-1380
Location Fax
(401) 272-1387
Mailing Address
257 WAYLAND AVENUE PROVIDENCE, RI 02906
Mailing Phone
(401) 272-1380
Mailing Fax
(401) 272-1387
Is Sole Proprietor?
No
Enumeration Date
04-10-2007
Last Update Date
07-08-2007
Code Navigator

A dentist like Gary Lazaroff is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

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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

Dentist Endodontics

Taxonomy Code
1223E0200X
Type
Dental Providers
License No.
1815
License State
RI
Taxonomy Description
The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.

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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 1720101959, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
7
Unchanged
Pos 3
2
Doubled → 4
Pos 4
0
Unchanged
Pos 5
1
Doubled → 2
Pos 6
0
Unchanged
Pos 7
1
Doubled → 2
Pos 8
9
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
9
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 2 → 4 1 → 2 1 → 2 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 4 + 0 + 2 + 0 + 2 + 9 + 1 + 0 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1720101959.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1720101959, enumerated as an "individual" on April 10, 2007.

The provider is located at 257 WAYLAND AVENUE PROVIDENCE, RI 02906 and the phone number is (401) 272-1380.

Dentist with taxonomy code 1223E0200X and a focus in Endodontics.