SOUTHERN ILLINOIS MEDICAL SERVICES, NFP
NPI 1477820900
Clinic/Center - Rural Health in Herrin, IL
NPI Status: Active since November 29, 2011
Contact Information
405 RUSHING DR
HERRIN, IL
ZIP 62948
Phone: (618) 993-3300
Fax: (618) 993-0262
- Organization
- Clinic/Center
- Rural Health
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 Herrin, Illinois operating as a Clinic/center, focusing in rural health . The healthcare provider is registered in the NPI registry with number 1477820900 assigned on November 2011. 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
- NPI
- 1477820900
- Provider Legal Name
- SOUTHERN ILLINOIS MEDICAL SERVICES, NFP
- Other Organization Name
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 405 RUSHING DR HERRIN, IL 62948
- Location Phone
- (618) 993-3300
- Location Fax
- (618) 993-0262
- Mailing Address
- PO BOX 3988 CARBONDALE, IL 62902
- Mailing Phone
- (618) 457-5200
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- Yes
- Enumeration Date
- 11-29-2011
- 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
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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 1477820900, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 60 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1477820900, enumerated as an "organization" on November 29, 2011.
The provider is located at 405 RUSHING DR HERRIN, IL 62948 and the phone number is (618) 993-3300.
Clinic/Center with taxonomy code 261QR1300X and a focus in Rural Health.
