SOUTHERN ILLINOIS MEDICAL SERVICES, NFP
SOUTHERN ILLINOIS MEDICAL SERVICES, NFP is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1770656837, based in Carbondale, IL. It is classified under Internal Medicine Physician.
Getting there
The practice address on file is 1239 E MAIN ST, Carbondale, IL 62901. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 3678677390
Enrolled in Medicare 4 times, across 4 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Illinois | O20070404000595 | Part B Supplier - Clinic/group Practice |
| Tennessee | O20250429000830 | Part B Supplier - Clinic/group Practice |
| Indiana | O20250707001294 | Part B Supplier - Clinic/group Practice |
| Texas | O20250902000087 | Part B Supplier - Clinic/group Practice |
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. There are 4 separate enrolment records across 4 states (IL, TN, IN, TX). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1770656837 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Nov 16, 2006 |
| Last updated | Jan 7, 2025 |
| Status | Active |
| Practice address |
1239 E MAIN ST Carbondale, IL 62901 (618) 457-5200 Fax (618) 549-5128 |
| Mailing address |
PO BOX 3988 Carbondale, IL 62902 |
| Other names |
Sih Medical Group Former Legal Name |
| Other identifiers |
3932056
· Other (IL) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 7 | 7 | 0 | 6 | 5 | 6 | 8 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 5 | 0 | 3 | 5 | 3 | 8 | 6 |
Sum = 63 · next multiple of 10 = 70 · check digit = 7 · actual last digit = 7
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.