Carmen Negron, MD
Carmen Negron, MD is a Diagnostic Ultrasound Physician in San Juan, PR, registered under NPI 1821013335. 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 AVE DE DIEGO #201 PLAZA SAN FCO OFIC #30, San Juan, PR 00927. 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 |
|---|---|---|
| 004746 | PR | Diagnostic Ultrasound Physician primary |
| 004746 | PR | Diagnostic Radiology Physician |
This provider holds licence 004746 issued in PR. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Diagnostic Radiology
- PAC ID
- 2264661545
- Enrollment ID
- I20140207000778
Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. 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 Diagnostic Ultrasound covers
A Radiology doctor of Osteopathy that specializes in Diagnostic Ultrasound. NUCC Health Care Provider Taxonomy, code 2085U0001X
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 | |
|---|---|---|---|---|
| 2085U0001X | Diagnostic Ultrasound Physician Diagnostic Ultrasound | 004746 | PR | primary |
| 2085R0202X | Diagnostic Radiology Physician Diagnostic Radiology | 004746 | PR |
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 | 1821013335 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 13, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
AVE DE DIEGO #201 PLAZA SAN FCO OFIC #30 San Juan, PR 00927 (787) 751-3587 Fax (787) 753-4631 |
| Mailing address |
11 CALLE COSTA AZUL PASEO LAS BRISQS San Juan, PR 00926 |
| Other identifiers |
27193
· Other |
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 | 0 | 1 | 3 | 3 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 4 | 1 | 0 | 1 | 6 | 3 | 6 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.