DR. NIKOLAOS CHATZIZACHARIAS MD, PHD, FRCS
NPI 1871049072
Surgery - Surgical Oncology in Wauwatosa, WI

NPI Status: Active since August 28, 2016

Contact Information

9200 WEST WISCONSIN AVENUE
MEDICAL COLLEGE OF WISONSIN
WAUWATOSA, WI
ZIP 53226
Phone: (414) 805-5020

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  • Individual
  • Male
  • Surgery
  • Surgical Oncology

About NIKOLAOS CHATZIZACHARIAS

This page provides the complete NPI Profile along with additional information for Nikolaos Chatzizacharias, a provider established in Wauwatosa, Wisconsin with a medical specialization in Surgery, focusing in surgical oncology . The healthcare provider is registered in the NPI registry with number 1871049072 assigned on August 2016. The practitioner's primary taxonomy code is 2086X0206X with license number 65018-20 (WI). The provider is registered as an individual and his NPI record was last updated 10 years ago.

NPI
1871049072
Provider Name
DR. NIKOLAOS CHATZIZACHARIAS MD, PHD, FRCS
Gender
Male
Entity Type
Individual
Location Address
9200 WEST WISCONSIN AVENUE MEDICAL COLLEGE OF WISONSIN WAUWATOSA, WI 53226
Location Phone
(414) 805-5020
Mailing Address
9200 WEST WISCONSIN AVENUE MEDICAL COLLEGE OF WISONSIN WAUWATOSA, WI 53226
Mailing Phone
(414) 805-5020
Is Sole Proprietor?
No
Enumeration Date
08-28-2016
Last Update Date
08-28-2016
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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

Surgery Surgical Oncology

Taxonomy Code
2086X0206X
Type
Allopathic & Osteopathic Physicians
License No.
65018-20
License State
WI
Taxonomy Description
A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.

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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 1871049072, 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
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
1
Unchanged
Pos 5
0
Doubled → 0
Pos 6
4
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
2
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 7 → 14 → 5 0 → 0 9 → 18 → 9 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 4 + 1 + 0 + 4 + 1 + 8 + 0 + 1 + 4 + 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 1871049072.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Internal Medicine (Nephrology)
9200 WEST WISCONSIN AVENUE, FROEDTERT & MED COLLEGE CLIN - WEST
MILWAUKEE, WI 53226
Anesthesiology
9200 WEST WISCONSIN AVENUE, HOSPITAL BASED @ FROEDTERT HOSP.
MILWAUKEE, WI 53226
Internal Medicine (Gastroenterology)
9200 WEST WISCONSIN AVENUE, FROEDTERT & MED COLLEGE CLIN - WEST
MILWAUKEE, WI 53226
Nurse Practitioner
9200 WEST WISCONSIN AVENUE, FROEDTERT & MED COLLEGE CLIN - EAST
MILWAUKEE, WI 53226
Internal Medicine (Cardiovascular Disease)
9200 WEST WISCONSIN AVENUE, 5TH FLOOR, SECTION OF CARDIOLOGY
WAUWATOSA, WI 53226
Physician Assistant
9200 WEST WISCONSIN AVENUE, FROEDTERT & MED COLLEGE CLIN - WEST
MILWAUKEE, WI 53226
Student in an Organized Health Care Education/Training Program
9200 WEST WISCONSIN AVENUE, DEPARTMENT OF INTERNAL MEDICINE, 7TH FLOOR
MILWAUKEE, WI 53226

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1871049072, enumerated as an "individual" on August 28, 2016.

The provider is located at 9200 WEST WISCONSIN AVENUE MEDICAL COLLEGE OF WISONSIN WAUWATOSA, WI 53226 and the phone number is (414) 805-5020.

Surgery with taxonomy code 2086X0206X and a focus in Surgical Oncology.