WESTERN PATHOLOGY ASSOCIATES, LTD.
NPI 1942316161
Pathology - Anatomic Pathology & Clinical Pathology in Phoenix, AZ

NPI Status: Active since August 21, 2006

Contact Information

9250 N. 3RD ST
SUITE 4000
PHOENIX, AZ
ZIP 85020
Phone: (602) 633-3800
Fax: (602) 861-3500

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  • Organization
  • Pathology
  • Anatomic Pathology & Clinical Pathology
  • CLIA Number: 03D2158422
  • CLIA Cert. Type: Other - SURGICAL PATHOLOGY
  • CLIA Exp. Date: 03-24-2028

About WESTERN PATHOLOGY ASSOCIATES, LTD.

This page provides the complete NPI Profile along with additional information for Western Pathology Associates, Ltd., a provider established in Phoenix, Arizona operating as a Pathology, focusing in anatomic pathology & clinical pathology . The healthcare provider is registered in the NPI registry with number 1942316161 assigned on August 2006. The practitioner's primary taxonomy code is 207ZP0102X with license number 29993 (AZ). The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Christopher John Stasik Do (Ceo Pathologist)

NPI
1942316161
Provider Name
WESTERN PATHOLOGY ASSOCIATES, LTD.
Entity Type
Organization
Location Address
9250 N. 3RD ST SUITE 4000 PHOENIX, AZ 85020
Location Phone
(602) 633-3800
Location Fax
(602) 861-3500
Mailing Address
9250 N 3RD ST STE 4000 PHOENIX, AZ 85020
Mailing Phone
(602) 633-3800
Mailing Fax
(602) 861-3500
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
08-21-2006
Last Update Date
11-12-2025
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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.
29993
License State
AZ
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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

CHRISTOPHER JOHN STASIK DO

Authorized Official Title
CEO PATHOLOGIST
Authorized Official Phone
(602) 633-3800

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
03D2158422
Facility Type
Other - SURGICAL PATHOLOGY
Certificate Effective Date
March 25, 2026
Certificate Expiration Date
March 24, 2028
Laboratory Director
DR. DONALD O. CHRISTENSEN
Certificate Type
Certificate of Accreditation
Certificate Type Description
This is a CLIA certificate is issued to Western Pathology Associates, Ltd. on the basis of the laboratory's accreditation by an accreditation organization approved by CMS. This type of certificate is issued to a laboratories tha perform nonwaived (moderate and/or high complexity) testing.

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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 1942316161, 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
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
4
Doubled → 8
Pos 4
2
Unchanged
Pos 5
3
Doubled → 6
Pos 6
1
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
1
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
1
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 4 → 8 3 → 6 6 → 12 → 3 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 8 + 2 + 6 + 1 + 1 + 2 + 1 + 1 + 2 + 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 1942316161.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1942316161, enumerated as an "organization" on August 21, 2006.

The provider is located at 9250 N. 3RD ST SUITE 4000 PHOENIX, AZ 85020 and the phone number is (602) 633-3800.

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