DR. JOHN J. DUBOIS M.D.
NPI 1861642563
Internal Medicine in Gt Barrington, MA

NPI Status: Active since September 30, 2008

Contact Information

444 STOCKBRIDGE RD
GT BARRINGTON, MA
ZIP 01230
Phone: (413) 528-8580
Fax: (413) 528-8583

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Internal Medicine

About JOHN DUBOIS

This page provides the complete NPI Profile along with additional information for John Dubois, an internist established in Gt Barrington, Massachusetts with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1861642563 assigned on September 2008. The practitioner's primary taxonomy code is 207R00000X with license number 15281 (SC). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI: 1861642563
Provider Name: DR. JOHN J. DUBOIS M.D.
Gender: Male
Entity Type: Individual
Location Address: 444 STOCKBRIDGE RD GT BARRINGTON, MA 01230
Location Phone: (413) 528-8580
Location Fax: (413) 528-8583
Mailing Address: 444 STOCKBRIDGE RD GT BARRINGTON, MA 01230
Mailing Phone: (413) 528-8580
Mailing Fax: (413) 528-8583
Is Sole Proprietor?: No
Enumeration Date: 09-30-2008
Last Update Date: 01-12-2012
Code Navigator

An internist like John Dubois is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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: Internal Medicine
Taxonomy Code: 207R00000X
Type: Allopathic & Osteopathic Physicians
License No.: 15281
License State: SC
Taxonomy Description: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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 1861642563, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 12 → 1 + 2

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 4

Pos 8

Unchanged

Pos 9

Doubled → 12 → 1 + 2

Check

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 6 → 12 → 3 2 → 4 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 2 + 1 + 1 + 2 + 4 + 4 + 5 + 1 + 2 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1861642563.