Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

NORMAN NITZKOWSKI DO
NPI 1700862307
Radiology - Diagnostic Radiology in Mankato, MN

Active since December 16, 2005
1025 MARSH ST, MANKATO, MN 56001(507) 625-4031 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Male
  • Radiology
  • Diagnostic Radiology

About NORMAN NITZKOWSKI

This page provides the complete NPI Profile along with additional information for Norman Nitzkowski, a provider established in Mankato, Minnesota with a medical specialization in Radiology, focusing in diagnostic radiology . The healthcare provider is registered in the NPI registry with number 1700862307 assigned on December 2005. The practitioner's primary taxonomy code is 2085R0202X with license number 39164 (MN). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1700862307
Provider Name
NORMAN NITZKOWSKI DO
Gender
Male
Entity Type
Individual
Location Address
1025 MARSH ST MANKATO, MN 56001
Location Phone
(507) 625-4031
Mailing Address
1025 MARSH ST MANKATO, MN 56001
Mailing Phone
(507) 625-4031
Is Sole Proprietor?
No
Enumeration Date
12-16-2005
Last Update Date
07-13-2026
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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

Radiology Diagnostic Radiology

Taxonomy Code
2085R0202X
Type
Allopathic & Osteopathic Physicians
License No.
39164
License State
MN
Taxonomy Description
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat 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 1700862307, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

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
7
Unchanged
Pos 3
0
Doubled → 0
Pos 4
0
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
6
Unchanged
Pos 7
2
Doubled → 4
Pos 8
3
Unchanged
Pos 9
0
Doubled → 0
Check
7
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 0 → 0 8 → 16 → 7 2 → 4 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 0 + 0 + 1 + 6 + 6 + 4 + 3 + 0 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1700862307.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Emergency Medicine
1025 MARSH ST
MANKATO, MN 56001
Family Medicine
1025 MARSH ST
MANKATO, MN 56001
Emergency Medicine
1025 MARSH ST
MANKATO, MN 56001
Nurse Practitioner (Acute Care)
1025 MARSH ST
MANKATO, MN 56001
Anesthesiology
1025 MARSH ST
MANKATO, MN 56001
Nurse Anesthetist, Certified Registered
1025 MARSH ST
MANKATO, MN 56001
Anesthesiology
1025 MARSH ST
MANKATO, MN 56001
Anesthesiology
1025 MARSH ST
MANKATO, MN 56001
Anesthesiology
1025 MARSH ST
MANKATO, MN 56001
Nurse Anesthetist, Certified Registered
1025 MARSH ST
MANKATO, MN 56001
Anesthesiology
1025 MARSH ST
MANKATO, MN 56001
Nurse Anesthetist, Certified Registered
1025 MARSH ST
MANKATO, MN 56001
Dietitian, Registered
1025 MARSH ST
MANKATO, MN 56001
Registered Nurse (Lactation Consultant)
1025 MARSH ST
MANKATO, MN 56001
Registered Nurse (Lactation Consultant)
1025 MARSH ST
MANKATO, MN 56001
Nurse Anesthetist, Certified Registered
1025 MARSH ST
MANKATO, MN 56001
Speech-Language Pathologist
1025 MARSH ST
MANKATO, MN 56001
Nurse Practitioner
1025 MARSH ST
MANKATO, MN 56001
Clinical Exercise Physiologist
1025 MARSH ST
MANKATO, MN 56001
Social Worker (Clinical)
1025 MARSH ST
MANKATO, MN 56001

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1700862307, enumerated as an "individual" on December 16, 2005.

The provider is located at 1025 MARSH ST MANKATO, MN 56001 and the phone number is (507) 625-4031.

Radiology with taxonomy code 2085R0202X and a focus in Diagnostic Radiology.