MARK S ALLEN M.D.
NPI 1396721312
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Rochester, MN

NPI Status: Active since December 21, 2005

Contact Information

200 1ST ST SW
ROCHESTER, MN
ZIP 55905
Phone: (507) 284-2511

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

Individual
Male
Thoracic Surgery (Cardiothoracic Vascula...

About MARK ALLEN

This page provides the complete NPI Profile along with additional information for Mark Allen, a provider established in Rochester, Minnesota with a medical specialization in Thoracic Surgery (cardiothoracic Vascular Surgery). The healthcare provider is registered in the NPI registry with number 1396721312 assigned on December 2005. The practitioner's primary taxonomy code is 208G00000X with license number 33949 (MN). The provider is registered as an individual and his NPI record was last updated 6 years ago.

NPI: 1396721312
Provider Name: MARK S ALLEN M.D.
Gender: Male
Entity Type: Individual
Location Address: 200 1ST ST SW ROCHESTER, MN 55905
Location Phone: (507) 284-2511
Mailing Address: 200 1ST ST SW ROCHESTER, MN 55905
Mailing Phone: (507) 284-2511
Is Sole Proprietor?: No
Enumeration Date: 12-21-2005
Last Update Date: 08-11-2020
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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: Thoracic Surgery (Cardiothoracic Vascular Surgery)
Taxonomy Code: 208G00000X
Type: Allopathic & Osteopathic Physicians
License No.: 33949
License State: MN
Taxonomy Description: A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.

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 1396721312, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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 → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 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 9 → 18 → 9 7 → 14 → 5 1 → 2 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 8 + 6 + 1 + 4 + 2 + 2 + 3 + 2 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2

This NPI is valid

The calculated check digit is 2, which matches the last digit of 1396721312.