Gilberto Alvarez Ferrer, M.D
Gilberto Alvarez Ferrer, M.D is a General Practice Physician in San Juan, PR, registered under NPI 1982826152. 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 400 AVE F.D. ROOSEVELT SUITE 101, San Juan, PR 00918. 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 |
|---|---|---|
| 14863 | PR | General Practice Physician primary |
| FA2087713 | PR | General Practice Physician |
| DM 139691 | PR | General Practice Physician |
This provider holds licence 14863 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 - General Practice
- PAC ID
- 0244272334
- Enrollment ID
- I20050531000318
Medicare enrolment is recorded as approved under the provider type Practitioner - General Practice. 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 General Practice covers
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. NUCC Health Care Provider Taxonomy, code 208D00000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | 14863 | PR | primary |
| 208D00000X | General Practice Physician | FA2087713 | PR | |
| 208D00000X | General Practice Physician | DM 139691 | 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 | 1982826152 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 3, 2007 |
| Last updated | Sep 27, 2023 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | M.D |
| Practice address |
400 AVE F.D. ROOSEVELT SUITE 101 San Juan, PR 00918 (787) 789-1996 Fax (787) 706-2867 |
| Mailing address |
ISLABELLA # 52 URB. LOS PRADOS Caguas, PR 00727 |
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 | 9 | 8 | 2 | 8 | 2 | 6 | 1 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 7 | 2 | 7 | 2 | 3 | 1 | 1 |
Sum = 58 · next multiple of 10 = 60 · 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.