DR. FRANCIS HARRINGTON III D.M.D.
NPI 1831218106
Dentist - General Practice in Natick, MA

NPI Status: Active since March 28, 2007

Contact Information

220 N MAIN ST
NATICK, MA
ZIP 01760
Phone: (508) 655-5331

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  • Individual
  • Male
  • Dentist
  • General Practice

About FRANCIS HARRINGTON

This page provides the complete NPI Profile along with additional information for Francis Harrington, a provider established in Natick, Massachusetts with a medical specialization in Dentist, focusing in general practice . The healthcare provider is registered in the NPI registry with number 1831218106 assigned on March 2007. The practitioner's primary taxonomy code is 1223G0001X with license number 20848 (MA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1831218106
Provider Name
DR. FRANCIS HARRINGTON III D.M.D.
Gender
Male
Entity Type
Individual
Location Address
220 N MAIN ST NATICK, MA 01760
Location Phone
(508) 655-5331
Mailing Address
20 CONSTITUTION CIR HOLLISTON, MA 01746
Mailing Phone
(774) 233-0225
Is Sole Proprietor?
No
Enumeration Date
03-28-2007
Last Update Date
07-08-2007
Code Navigator

A dentist like Francis Harrington 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.

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

Dentist General Practice

Taxonomy Code
1223G0001X
Type
Dental Providers
License No.
20848
License State
MA
Taxonomy Description
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

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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 1831218106, we treat the final digit (6) 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 6 + 1 + 4 + 1 + 1 + 6 + 1 + 0 + 24 = 54

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

The next multiple of ten after 54 is 60. The difference is the calculated check digit.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1831218106.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Psychiatry & Neurology (Psychiatry)
220 N MAIN ST, #103
NATICK, MA 01760
Social Worker (Clinical)
220 N MAIN ST
NATICK, MA 01760
Dentist
220 N MAIN ST, SUITE 203
NATICK, MA 01760
Dentist (General Practice)
220 N MAIN ST, 203
NATICK, MA 01760
Dentist (General Practice)
220 N MAIN ST, SUITE 203
NATICK, MA 01760
Dentist
220 N MAIN ST, SUITE 203
NATICK, MA 01760
Physician Assistant
220 N MAIN ST
NATICK, MA 01760

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1831218106, enumerated as an "individual" on March 28, 2007.

The provider is located at 220 N MAIN ST NATICK, MA 01760 and the phone number is (508) 655-5331.

Dentist with taxonomy code 1223G0001X and a focus in General Practice.