MARC D KESHISHIAN MD
NPI 1255506333
Internal Medicine in Southfield, MI

NPI Status: Active since April 29, 2008

Contact Information

20500 CIVIC CENTER DRIVE
SOUTHFIELD, MI
ZIP 48076
Phone: (248) 799-6802
Fax: (248) 799-6429

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  • Individual
  • Male
  • Internal Medicine

About MARC KESHISHIAN

This page provides the complete NPI Profile along with additional information for Marc Keshishian, an internist established in Southfield, Michigan with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1255506333 assigned on April 2008. The practitioner's primary taxonomy code is 207R00000X with license number 4301041898 (MI). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1255506333
Provider Name
MARC D KESHISHIAN MD
Gender
Male
Entity Type
Individual
Location Address
20500 CIVIC CENTER DRIVE SOUTHFIELD, MI 48076
Location Phone
(248) 799-6802
Location Fax
(248) 799-6429
Mailing Address
20500 CIVIC CENTER DRIVE SOUTHFIELD, MI 48076
Mailing Phone
(248) 799-6802
Mailing Fax
(248) 799-6429
Is Sole Proprietor?
No
Enumeration Date
04-29-2008
Last Update Date
04-29-2008
Code Navigator

An internist like Marc Keshishian 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

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
4301041898
License State
MI
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.

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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 1255506333, 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 47. The final step is to find the difference between that total and the next multiple of ten (50 - 47 = 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
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
5
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
0
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
3
Unchanged
Pos 9
3
Doubled → 6
Check
3
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 5 → 10 → 1 5 → 10 → 1 6 → 12 → 3 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 1 + 0 + 0 + 1 + 2 + 3 + 6 + 24 = 47

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

The next multiple of ten after 47 is 50. The difference is the calculated check digit.

50 - 47 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1255506333.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255506333, enumerated as an "individual" on April 29, 2008.

The provider is located at 20500 CIVIC CENTER DRIVE SOUTHFIELD, MI 48076 and the phone number is (248) 799-6802.

Internal Medicine with taxonomy code 207R00000X.