Julie Armstrong, RDCS
Julie Armstrong, RDCS is a Sonography Specialist/Technologist Cardiovascular in Boca Raton, FL, registered under NPI 1821465493. 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 5901 BROKEN SOUND PKWY STE 450, Boca Raton, FL 33487. 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 |
|---|---|---|
| 23352 | AZ | Sonography Specialist/Technologist… primary |
| 915392 | OR | Sonography Specialist/Technologist… |
Licences are recorded in 2 states: AZ, OR. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: Arizona and Oregon. Multi-state licensure often means the provider works near a state border, covers more than one office, or delivers care by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Sonography covers
A cardiovascular sonography technologist operates special equipment to create images and conduct tests of the cardiovascular system. They work with physicians who view the images and test results to assess and diagnose medical conditions. NUCC Health Care Provider Taxonomy, code 246XS1301X
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 | |
|---|---|---|---|---|
| 246XS1301X | Sonography Specialist/Technologist Cardiovascular Sonography | 23352 | AZ | primary |
| 246XS1301X | Sonography Specialist/Technologist Cardiovascular Sonography | 915392 | OR |
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 | 1821465493 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 30, 2015 |
| Last updated | Aug 30, 2015 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | RDCS |
| Practice address |
5901 BROKEN SOUND PKWY STE 450 Boca Raton, FL 33487 (561) 314-4531 |
| Mailing address |
PO BOX 47 El Mirage, AZ 85335 |
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 | 8 | 2 | 1 | 4 | 6 | 5 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 4 | 1 | 8 | 6 | 1 | 4 | 9 |
Sum = 67 · next multiple of 10 = 70 · check digit = 3 · actual last digit = 3
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.