Harold Dien, R.T.(R)(ARRT), RPA
Harold Dien, R.T.(R)(ARRT), RPA is a Radiology Practitioner Assistant in San Bernardino, CA, registered under NPI 1740973866. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 800 E HIGHLAND AVE, San Bernardino, CA 92404. 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 |
|---|---|---|
| 21CA0919 | CA | Radiology Practitioner Assistant primary |
| 574424 | CA | Radiography Radiologic Technologist |
This provider holds licence 21CA0919 issued in CA. 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 Radiology Practitioner Assistant covers
A Radiology Practitioner Assistant (RPA) is a health professional certified as a registered radiographer with the American Registry of Radiologic Technologists (ARRT) and, in addition, is credentialed to provide primary radiology health care with radiologist supervision. Radiology Practitioner Assistants are qualified by graduation from an educational program recognized by the Board of Directors of athe Certification Board for Radiology Practitioner Assistants (CBRPA) and certified by the CBRPA. Within the Radiologist/RPA relationship, Radiology Practitioner Assistants exercise autonomy in decision making in the role of a primary caregiver with regard to patient assessment, patient management and in providing a broad range of radiology diagnostic and interventional services. The clinical role of the Radiology Practitioner Assistant includes primary and specialty care in radiology practice settings in rural and urban areas. NUCC Health Care Provider Taxonomy, code 243U00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 243U00000X | Radiology Practitioner Assistant | 21CA0919 | CA | primary |
| 2471C3402X | Radiography Radiologic Technologist Radiography | 574424 | CA |
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 | 1740973866 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 2, 2023 |
| Last updated | Jun 2, 2023 |
| Status | Active |
| Sole proprietor | No |
| Credential | R.T.(R)(ARRT), RPA |
| Practice address |
800 E HIGHLAND AVE San Bernardino, CA 92404 (909) 450-0640 |
| Mailing address |
1505 MOHAVE DR Colton, CA 92324 |
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 | 4 | 0 | 9 | 7 | 3 | 8 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 8 | 0 | 9 | 7 | 6 | 8 | 3 |
Sum = 74 · next multiple of 10 = 80 · check digit = 6 · actual last digit = 6
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.