Ernesto Marrero, M.D.
NPI 1487780375 · Psychiatry Physician · Bayamon, PR
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ernesto Marrero, M.D. is a Psychiatry Physician provider in Bayamon, PR (NPI 1487780375).
Provider details
- NPI number
- 1487780375
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6021 (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
19 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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Temazepam | 2,288 | 368 |
| Quetiapine Fumarate | 2,202 | 273 |
| Clonazepam | 2,134 | 325 |
| Nortriptyline Hcl | 1,403 | 250 |
| Sertraline Hcl | 1,280 | 224 |
| Bupropion Hclbrand: Bupropion Xl | 778 | 116 |
| Duloxetine Hcl | 748 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 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
- 2007-02-26
- Last updated
- 2016-10-12
Frequently asked questions
- What is Ernesto Marrero's NPI number?
- Ernesto Marrero's National Provider Identifier (NPI) is 1487780375, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ernesto Marrero's specialty?
- Ernesto Marrero is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ernesto Marrero located?
- Ernesto Marrero's practice location on file with NPPES is Calle Santa Cruz 66, Bayamon, PR 00961.
- What is Ernesto Marrero's phone number?
- The practice phone number listed in the NPPES registry for Ernesto Marrero is (787) 740-2010.
- Does Ernesto Marrero accept Medicare?
- Ernesto Marrero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ernesto Marrero's NPI active?
- Yes — Ernesto Marrero's NPI (1487780375) is active in the NPPES registry as of the last update on 2016-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.