WALLER-HARRIS EMERGENCY SERVICES
WALLER-HARRIS EMERGENCY SERVICES is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1437994274, based in Prairie View, TX. It is classified under Land Ambulance.
Getting there
The practice address on file is 540 ELLEN POWELL DR, Prairie View, TX 77445. 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 - Ambulance Service Supplier
- PAC ID
- 2961991971
- Enrollment ID
- O20251030000459
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Ambulance Service Supplier. 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 Land Transport covers
Definition to come... NUCC Health Care Provider Taxonomy, code 3416L0300X
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 | 1437994274 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jun 25, 2024 |
| Last updated | Aug 20, 2025 |
| Status | Active |
| Practice address |
540 ELLEN POWELL DR Prairie View, TX 77445 (832) 684-2975 |
| Mailing address |
PO BOX 510 Waller, TX 77484 |
| Other identifiers |
1437994274
· Medicaid (TX) |
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 | 4 | 3 | 7 | 9 | 9 | 4 | 2 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 6 | 7 | 9 | 9 | 8 | 2 | 5 |
Sum = 76 · next multiple of 10 = 80 · check digit = 4 · actual last digit = 4
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.