DR. ROGER WILLIAM GEISS M.D.
NPI 1821342973
Pathology - Anatomic Pathology & Clinical Pathology in Peoria, IL

NPI Status: Active since October 27, 2012

Contact Information

1 ILLINI DR
DEPARTMENT OF PATHOLOGY
PEORIA, IL
ZIP 61605
Phone: (309) 671-8440
Fax: (309) 671-8434

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  • Individual
  • Male
  • Pathology
  • Anatomic Pathology & Clinical Pathology

About ROGER GEISS

This page provides the complete NPI Profile along with additional information for Roger Geiss, a provider established in Peoria, Illinois with a medical specialization in Pathology, focusing in anatomic pathology & clinical pathology . The healthcare provider is registered in the NPI registry with number 1821342973 assigned on October 2012. The practitioner's primary taxonomy code is 207ZP0102X with license number 036.054573 (IL). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI
1821342973
Provider Name
DR. ROGER WILLIAM GEISS M.D.
Gender
Male
Entity Type
Individual
Location Address
1 ILLINI DR DEPARTMENT OF PATHOLOGY PEORIA, IL 61605
Location Phone
(309) 671-8440
Location Fax
(309) 671-8434
Mailing Address
1 ILLINI DR DEPARTMENT OF PATHOLOGY PEORIA, IL 61605
Mailing Phone
(309) 671-8440
Mailing Fax
(309) 671-8434
Is Sole Proprietor?
Yes
Enumeration Date
10-27-2012
Last Update Date
10-27-2012
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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 Anatomic Pathology & Clinical Pathology

Taxonomy Code
207ZP0102X
Type
Allopathic & Osteopathic Physicians
License No.
036.054573
License State
IL
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 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 1821342973, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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
2
Doubled → 4
Pos 4
1
Unchanged
Pos 5
3
Doubled → 6
Pos 6
4
Unchanged
Pos 7
2
Doubled → 4
Pos 8
9
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
3
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 2 → 4 3 → 6 2 → 4 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 + 4 + 1 + 6 + 4 + 4 + 9 + 1 + 4 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1821342973.

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1 ILLINI DR
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Student in an Organized Health Care Education/Training Program
1 ILLINI DR
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Student in an Organized Health Care Education/Training Program
1 ILLINI DR
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Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Pediatrics
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
PEORIA, IL 61605
Student in an Organized Health Care Education/Training Program
1 ILLINI DR
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Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821342973, enumerated as an "individual" on October 27, 2012.

The provider is located at 1 ILLINI DR DEPARTMENT OF PATHOLOGY PEORIA, IL 61605 and the phone number is (309) 671-8440.

Pathology with taxonomy code 207ZP0102X and a focus in Anatomic Pathology & Clinical Pathology.