MICHAEL K FRITSCH MD
NPI 1912968439
Pathology - Clinical Pathology/Laboratory Medicine in Madison, WI

NPI Status: Active since April 01, 2006

Contact Information

5110 FLAMBEAU RD
MADISON, WI
ZIP 53705
Phone: (608) 438-5575

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NPPES record last updated: November 14, 2022. Verified against the NPPES registry weekly; last sync: July 12, 2026.

Record update history: Nov 14, 2022, Jan 19, 2021, Apr 26, 2018 and 2 more (5 updates tracked since 2016).

  • Individual
  • Male
  • Pathology
  • Clinical Pathology/Laboratory Medicine

About MICHAEL FRITSCH

This page provides the complete NPI Profile along with additional information for Michael Fritsch, a provider established in Madison, Wisconsin with a medical specialization in Pathology, focusing in clinical pathology/laboratory medicine . The healthcare provider is registered in the NPI registry with number 1912968439 assigned on April 2006. The practitioner's primary taxonomy code is 207ZP0105X with license number 27971 (WI). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI
1912968439
Provider Name
MICHAEL K FRITSCH MD
Gender
Male
Entity Type
Individual
Location Address
5110 FLAMBEAU RD MADISON, WI 53705
Location Phone
(608) 438-5575
Mailing Address
5110 FLAMBEAU RD MADISON, WI 53705
Is Sole Proprietor?
No
Enumeration Date
04-01-2006
Last Update Date
11-14-2022
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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

Pathology Clinical Pathology/Laboratory Medicine

Taxonomy Code
207ZP0105X
Type
Allopathic & Osteopathic Physicians
License No.
27971
License State
WI
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

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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 1912968439, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

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
9
Unchanged
Pos 3
1
Doubled → 2
Pos 4
2
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
6
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
4
Unchanged
Pos 9
3
Doubled → 6
Check
9
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 9 → 18 → 9 8 → 16 → 7 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 2 + 2 + 1 + 8 + 6 + 1 + 6 + 4 + 6 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1912968439.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1912968439, enumerated as an "individual" on April 01, 2006.

The provider is located at 5110 FLAMBEAU RD MADISON, WI 53705 and the phone number is (608) 438-5575.

Pathology with taxonomy code 207ZP0105X and a focus in Clinical Pathology/Laboratory Medicine.