AJAY SHUNMUGARAJAN MD
NPI 1740109065
Internal Medicine - Interventional Cardiology in Springfield, MA

NPI Status: Active since July 11, 2026

Contact Information

BAYSTATE MEDICAL CENTER 759 CHESTNUT ST
SPRINGFIELD, MA
ZIP 01199
Phone: (413) 794-1155

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Newly Listed Provider
This NPI profile has been added to the NPI registry within the last 30 days.

Table of Contents

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

Individual
Male
Internal Medicine
Interventional Cardiology

About AJAY SHUNMUGARAJAN

This page provides the complete NPI Profile along with additional information for Ajay Shunmugarajan, an internist established in Springfield, Massachusetts with a medical specialization in Internal Medicine, focusing in interventional cardiology . The healthcare provider is registered in the NPI registry with number 1740109065 assigned on July 2026. The practitioner's primary taxonomy code is 207RI0011X with license number 3019729 (MA). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI: 1740109065
Provider Name: AJAY SHUNMUGARAJAN MD
Gender: Male
Entity Type: Individual
Location Address: BAYSTATE MEDICAL CENTER 759 CHESTNUT ST SPRINGFIELD, MA 01199
Location Phone: (413) 794-1155
Mailing Address: 206 GATEWOOD DR ENFIELD, CT 06082
Mailing Phone: (413) 421-8740
Is Sole Proprietor?: No
Enumeration Date: 07-11-2026
Last Update Date: 07-11-2026
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An internist like Ajay Shunmugarajan 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.

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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: Internal Medicine Interventional Cardiology
Taxonomy Code: 207RI0011X
Type: Allopathic & Osteopathic Physicians
License No.: 3019729
License State: MA
Taxonomy Description: An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

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 1740109065, we treat the final digit (5) 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).

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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 2

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

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 4 → 8 1 → 2 9 → 18 → 9 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 8 + 0 + 2 + 0 + 1 + 8 + 0 + 1 + 2 + 24 = 55

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

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5

This NPI is valid

The calculated check digit is 5, which matches the last digit of 1740109065.