Sixto Alvarez, M.D
NPI 1336181551 · General Practice Physician · Caguas, PR
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sixto Alvarez, M.D is a General Practice Physician provider in Caguas, PR (NPI 1336181551).
Provider details
- NPI number
- 1336181551
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 15079 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 198 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 943 | 202 |
| Levothyroxine Sodium | 619 | 124 |
| Gabapentin | 493 | 117 |
| Famotidine | 445 | 94 |
| Metformin Hcl | 433 | 86 |
| Simvastatin | 430 | 95 |
| Losartan Potassium | 420 | 97 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sixto Alvarez's NPI number?
- Sixto Alvarez's National Provider Identifier (NPI) is 1336181551, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sixto Alvarez's specialty?
- Sixto Alvarez is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Sixto Alvarez located?
- Sixto Alvarez's practice location on file with NPPES is 24 Carr 172, Caguas, PR 00727-7077.
- What is Sixto Alvarez's phone number?
- The practice phone number listed in the NPPES registry for Sixto Alvarez is (787) 286-6060.
- Does Sixto Alvarez accept Medicare?
- Sixto Alvarez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sixto Alvarez's NPI active?
- Yes — Sixto Alvarez's NPI (1336181551) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.