DR. MARK V SAPP MD
NPI 1710070941
Hospitalist in Huntsville, AL

NPI Status: Active since October 02, 2006

Contact Information

245 GOVERNORS DR SE
HUNTSVILLE, AL
ZIP 35801
Phone: (256) 265-7499
Fax: (256) 265-4987

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

Individual
Male
Hospitalist

About MARK SAPP

This page provides the complete NPI Profile along with additional information for Mark Sapp, a provider established in Huntsville, Alabama with a medical specialization in Hospitalist. The healthcare provider is registered in the NPI registry with number 1710070941 assigned on October 2006. The practitioner's primary taxonomy code is 208M00000X with license number 32039 (AL). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI: 1710070941
Provider Name: DR. MARK V SAPP MD
Gender: Male
Entity Type: Individual
Location Address: 245 GOVERNORS DR SE HUNTSVILLE, AL 35801
Location Phone: (256) 265-7499
Location Fax: (256) 265-4987
Mailing Address: PO BOX 2705 HUNTSVILLE, AL 35804
Mailing Phone: (256) 265-1000
Is Sole Proprietor?: No
Enumeration Date: 10-02-2006
Last Update Date: 09-02-2021
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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: Hospitalist
Taxonomy Code: 208M00000X
Type: Allopathic & Osteopathic Physicians
License No.: 32039
License State: AL
Taxonomy Description: Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

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	208000000X	Allopathic & Osteopathic Physicians	Pediatrics	217088 (MA)
2	208000000X	Allopathic & Osteopathic Physicians	Pediatrics	MD.32039 (AL)

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 1710070941, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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 → 2

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 8

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 1 → 2 0 → 0 0 → 0 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 2 + 0 + 0 + 7 + 0 + 9 + 8 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1710070941.