SHANNON CLINIC
SHANNON CLINIC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003762899, based in Big Spring, TX. It is classified under Rural Health Clinic/Center.
Getting there
Here is what surrounds this office in Big Spring, based on OpenStreetMap data collected Oct 29, 2026. Parking is available about 0.32 mi away.
Getting here and what is nearby
Restaurant Whataburger 407 ft ~2 min
Parking 616 ft ~3 min
Restaurant Subway 948 ft ~4 min
1000 South Gregg Street, Big Spring 79720
09:00-22:00
Parking 0.31 mi ~7 min
Parking 0.32 mi ~7 min
Convenience Yesway 0.38 mi ~8 min
Gas station DK 0.38 mi ~8 min
Gas station H-E-B Fuel 0.48 mi ~10 min
2000 South Gregg Street, Big Spring 79720
Grocery H-E-B 0.52 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
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.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Rural Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QR1300X
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 | 1003762899 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 5, 2026 |
| Last updated | Mar 6, 2026 |
| Status | Active |
| Practice address |
2503 S GREGG ST STE C Big Spring, TX 79720 (432) 606-5178 Fax (432) 606-5066 |
| Mailing address |
PO BOX 22000 San Angelo, TX 76902 |
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 | 0 | 0 | 3 | 7 | 6 | 2 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 6 | 4 | 8 | 9 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.