Marcos Ayala Rivera, M.D.
NPI 1194772640 · General Practice Physician · Mayaguez, PR
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcos Ayala Rivera, M.D. is a General Practice Physician provider in Mayaguez, PR (NPI 1194772640).
Provider details
- NPI number
- 1194772640
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6806 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 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 · 94 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 677 | 194 |
| Losartan Potassium | 592 | 169 |
| Gabapentin | 480 | 67 |
| Montelukast Sodium | 428 | 52 |
| Omeprazole | 414 | 64 |
| Levothyroxine Sodiumbrand: Synthroid | 395 | 91 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$314 across 3 records (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
- 2006-05-30
- Last updated
- 2011-08-16
Frequently asked questions
- What is Marcos Ayala Rivera's NPI number?
- Marcos Ayala Rivera's National Provider Identifier (NPI) is 1194772640, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcos Ayala Rivera's specialty?
- Marcos Ayala Rivera is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Marcos Ayala Rivera located?
- Marcos Ayala Rivera's practice location on file with NPPES is 167e Calle Ramos Antonini, Mayaguez, PR 00680-5039.
- What is Marcos Ayala Rivera's phone number?
- The practice phone number listed in the NPPES registry for Marcos Ayala Rivera is (787) 833-5235.
- Does Marcos Ayala Rivera accept Medicare?
- Marcos Ayala Rivera is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcos Ayala Rivera's NPI active?
- Yes — Marcos Ayala Rivera's NPI (1194772640) is active in the NPPES registry as of the last update on 2011-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.