William Osborne, RRT-ACCS, RRT-NPS
William Osborne, RRT-ACCS, RRT-NPS is a Registered Respiratory Therapist in Concord, NC, registered under NPI 1255228052. This provider registers 10 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 1 BUFFALO AVE NW STE 1106, Concord, NC 28025. 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
| Licence | State | Specialty |
|---|---|---|
| 3807 | NC | Registered Respiratory Therapist primary |
| 3807 | NC | Pulmonary Rehabilitation Registered… |
This provider holds licence 3807 issued in NC. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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 Respiratory Therapist, Registered covers
A Registered Respiratory Therapist (RRT) is an advanced therapist who has passed standardized written and clinical simulation examinations administered by the National Board for Respiratory Care (NBRC). In addition, to the certified therapist (CRT) entry level skills, RRTs have advanced education and training in patient assessment, in the development and modification of patient care plans, and in assuring the appropriate utilization of respiratory care resources. An RRT is a graduate of an associate or baccalaureate degree producing educational programs approved by the Commission on Accreditation of Allied Health Education Programs (CAAHEP) and where applicable, is licensed by the state and is practicing within the scope of that license. NUCC Health Care Provider Taxonomy, code 227900000X
All registered taxonomy codes
This provider registers 11 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2279P1004X | Pulmonary Diagnostics Registered Respiratory Therapist Pulmonary Diagnostics | — | — | |
| 261QR0400X | Rehabilitation Clinic/Center Rehabilitation | — | — | |
| 227900000X | Registered Respiratory Therapist | 3807 | NC | primary |
| 2279P1006X | Pulmonary Function Technologist Registered Respiratory Therapist Pulmonary Function Technologist | — | — | |
| 2279P1005X | Pulmonary Rehabilitation Registered Respiratory Therapist Pulmonary Rehabilitation | — | — | |
| 261QR0405X | Substance Use Disorder Rehabilitation Clinic/Center Rehabilitation, Substance Use Disorder | — | — | |
| 261QM1300X | Multi-Specialty Clinic/Center Multi-Specialty | — | — | |
| 2279P1005X | Pulmonary Rehabilitation Registered Respiratory Therapist Pulmonary Rehabilitation | 3807 | NC | |
| 261Q00000X | Clinic/Center | — | — | |
| 332B00000X | Durable Medical Equipment & Medical Supplies | — | — | |
| 261QP2300X | Primary Care Clinic/Center Primary Care | — | — |
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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1255228052 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 23, 2025 |
| Last updated | Dec 3, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | RRT-ACCS, RRT-NPS |
| Practice address |
1 BUFFALO AVE NW STE 1106 Concord, NC 28025 (704) 954-4663 |
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 | 2 | 5 | 5 | 2 | 2 | 8 | 0 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 1 | 5 | 4 | 2 | 7 | 0 | 1 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.