SOUTHERN ILLINOIS MEDICAL SERVICES, NFP
NPI 1538689062
Clinic/Center - Rural Health in Anna, IL

NPI Status: Active since June 26, 2017

Contact Information

98 PEACH RIDGE RD
ANNA, IL
ZIP 62906
Phone: (618) 614-1400
Fax: (618) 614-1401

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  • Organization
  • Clinic/Center
  • Rural Health
  • CLIA Number: 14D2132982
  • CLIA Cert. Type: School/Student Health Service
  • CLIA Exp. Date: 07-02-2027

About SOUTHERN ILLINOIS MEDICAL SERVICES, NFP

This page provides the complete NPI Profile along with additional information for Southern Illinois Medical Services, Nfp, a primary care provider established in Anna, Illinois operating as a Clinic/center, focusing in rural health . The healthcare provider is registered in the NPI registry with number 1538689062 assigned on June 2017. The practitioner's primary taxonomy code is 261QR1300X. The provider is registered as an organization and their NPI record was last updated April 2026. The provider's . The authorized official of this NPI record is Warren P Ladner (Senior Vp Chief Financial Officer)

NPI
1538689062
Provider Legal Name
SOUTHERN ILLINOIS MEDICAL SERVICES, NFP
Other Organization Name
Other Name Type
(6)
Entity Type
Organization
Location Address
98 PEACH RIDGE RD ANNA, IL 62906
Location Phone
(618) 614-1400
Location Fax
(618) 614-1401
Mailing Address
PO BOX 3988 CARBONDALE, IL 62902
Mailing Phone
(618) 457-5200
Is Sole Proprietor?
No
Is Organization Subpart?
Yes
Enumeration Date
06-26-2017
Last Update Date
04-13-2026
Code Navigator

A primary care provider (PCP) like Southern Illinois Medical Services, Nfp sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

Location Map

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

Clinic/Center Rural Health

Taxonomy Code
261QR1300X
Type
Ambulatory Health Care Facilities
License State
IL

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

WARREN P LADNER

Authorized Official Title
SENIOR VP CHIEF FINANCIAL OFFICER
Authorized Official Phone
(618) 457-5200

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
14D2132982
Facility Type
School/Student Health Service
Certificate Effective Date
July 03, 2025
Certificate Expiration Date
July 02, 2027
Laboratory Director
DANIEL R. SCHUH
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Southern Illinois Medical Services, Nfp to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1538689062, 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 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
5
Unchanged
Pos 3
3
Doubled → 6
Pos 4
8
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
8
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 3 → 6 6 → 12 → 3 9 → 18 → 9 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 6 + 8 + 1 + 2 + 8 + 1 + 8 + 0 + 1 + 2 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1538689062.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Nurse Practitioner
98 PEACH RIDGE RD
ANNA, IL 62906
Nurse Practitioner
98 PEACH RIDGE RD
ANNA, IL 62906

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1538689062, enumerated as an "organization" on June 26, 2017.

The provider is located at 98 PEACH RIDGE RD ANNA, IL 62906 and the phone number is (618) 614-1400.

Clinic/Center with taxonomy code 261QR1300X and a focus in Rural Health.