DR. MARK LANE WELTON M.D.
NPI 1184768624
Colon & Rectal Surgery in Minneapolis, MN

NPI Status: Active since February 17, 2007

Contact Information

909 FULTON ST SE
MINNEAPOLIS, MN
ZIP 55455
Phone: (612) 672-5183

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

Individual
Male
Colon & Rectal Surgery

About MARK WELTON

This page provides the complete NPI Profile along with additional information for Mark Welton, a provider established in Minneapolis, Minnesota with a medical specialization in Colon & Rectal Surgery. The healthcare provider is registered in the NPI registry with number 1184768624 assigned on February 2007. The practitioner's primary taxonomy code is 208C00000X with license number 64486 (MN). The provider is registered as an individual and his NPI record was last updated 6 years ago.

NPI: 1184768624
Provider Name: DR. MARK LANE WELTON M.D.
Gender: Male
Entity Type: Individual
Location Address: 909 FULTON ST SE MINNEAPOLIS, MN 55455
Location Phone: (612) 672-5183
Mailing Address: 2450 RIVERSIDE AVE MINNEAPOLIS, MN 55454
Mailing Phone: (612) 672-5183
Is Sole Proprietor?: Yes
Enumeration Date: 02-17-2007
Last Update Date: 03-17-2020
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Location Map

Secondary Locations

875 Blake Wilbur Dr Clinic B
Palo Alto, CA 94304
(650) 723-3913

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: Colon & Rectal Surgery
Taxonomy Code: 208C00000X
Type: Allopathic & Osteopathic Physicians
License No.: 64486
License State: MN
Taxonomy Description: A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	208C00000X	Allopathic & Osteopathic Physicians	Colon & Rectal Surgery	G058238 (CA)

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 1184768624, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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 → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 4

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 8 → 16 → 7 7 → 14 → 5 8 → 16 → 7 2 → 4