Sonnet Pacheco, RDMS
Sonnet Pacheco, RDMS is a provider specialising in Sonography Radiologic Technologist in Chicago, IL, registered under NPI 1376360347. 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 5851 W IRVING PARK RD, Chicago, IL 60634. 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 |
|---|---|---|
| 118950 | IL | Sonography Radiologic Technologist primary |
This provider holds licence 118950 issued in IL. 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 Sonography covers
A radiologic technologist who specializes in sonography and is appropriately educated and trained, consistent with nationally recognized standards, state statute, and facility policy in performance of ultrasounds, exam techniques, equipment protocols, radiation safety, and patient care. NUCC Health Care Provider Taxonomy, code 2471S1302X
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 | 1376360347 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 23, 2024 |
| Last updated | Jul 28, 2026 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | RDMS |
| Practice address |
5851 W IRVING PARK RD Chicago, IL 60634 (312) 560-5585 |
| Mailing address |
4043 N MARMORA AVE Chicago, IL 60634 |
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 | 3 | 7 | 6 | 3 | 6 | 0 | 3 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 5 | 6 | 6 | 6 | 0 | 3 | 8 |
Sum = 63 · next multiple of 10 = 70 · check digit = 7 · actual last digit = 7
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.