Guillermo Alvarez, MD
NPI 1063820355 · Internal Medicine Physician · Moca, PR
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo Alvarez, MD is a Internal Medicine Physician provider in Moca, PR (NPI 1063820355).
Provider details
- NPI number
- 1063820355
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 18845 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 90 | 47 |
| Losartan Potassium | 58 | 30 |
| Metoprolol Succinate | 55 | 33 |
| Lisinopril | 54 | 27 |
| Famotidine | 53 | 27 |
| Gabapentin | 49 | 18 |
| Amlodipine Besylate | 41 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-07-30
- Last updated
- 2024-01-02
- Certified
- 2023-12-29
Frequently asked questions
- What is Guillermo Alvarez's NPI number?
- Guillermo Alvarez's National Provider Identifier (NPI) is 1063820355, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Alvarez's specialty?
- Guillermo Alvarez is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Alvarez located?
- Guillermo Alvarez's practice location on file with NPPES is Moca Medical Plaza, Moca, PR 00676.
- What is Guillermo Alvarez's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Alvarez is (787) 877-6103.
- Does Guillermo Alvarez accept Medicare?
- Guillermo Alvarez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo Alvarez's NPI active?
- Yes — Guillermo Alvarez's NPI (1063820355) is active in the NPPES registry as of the last update on 2024-01-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.