NPI registry status
Active
2026 NPPES data Surgery Physician NPI 1437594819 MD, MPH
Verify on CMS → Annette Pascual Marrero, MD, MPH
Surgery Physician in San Juan, Puerto Rico.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 36,199 in Surgery Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
121
Medicare Part D claims · 15 beneficiaries · Surgery Physician avg: 169
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Annette Pascual Marrero, MD, MPH filed 121 Medicare Part D claims in 2023 as a Surgery Physician in San Juan, Puerto Rico, prescribing 80% generic.
- 121
- Part D claims, 2023
- 80%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Annette Pascual Marrero, MD, MPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
121 35th percentile higher than 35% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
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Board-eligible specialty (heuristic, not verified)
Annette Pascual Marrero, MD, MPH practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Annette Pascual Marrero, MD, MPH?
Quality data not reportedPrimary specialty
Surgery Physician
Medicare Part D claims
121 28% vs specialty avg
Specialty distribution in Puerto Rico
How Surgery Physician compares to other specialties among Puerto Rico providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Surgery Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Annette Pascual Marrero, MD, MPH appears in the CMS NPPES registry as a Surgery Physician provider holding MD, MPH credentials at 1452 AVE ASHFORD, San Juan, PR, 00907, with a listed phone of (939) 202-3008. NPI 1437594819 was issued on 04/30/2013.
Medicare Part D records for calendar year 2023 show 121 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $7K in drug spend, split 20% brand-name and 80% generic by claim count.
Surgery Physician is a mid-sized specialty nationwide, with 36,199 enrolled providers across 56 states and an average of 169 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1437594819 |
|---|---|
| Specialty | Surgery Physician |
| Credentials | MD, MPH |
| Gender | Female |
| NPI Issued | 04/30/2013 |
Brand vs generic prescribing mix · Typical
Annette Pascual Marrero, MD, MPH - brand share 20.0%
Surgery Physician average
20% brand-name claims vs 80% generic, on 121 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
121
Total Claims
$7K
Total Drug Cost
15
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 122
- Total Day Supply
- 3,312
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $5K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 68.1 years
- Avg HCC Risk Score
- 1.58
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Annette Pascual Marrero, MD, MPH prescribes most
Top Medicare Part D drugs by claim count, 2023
- Synthroid
Synthroid
13 claims
- Amlodipine Besylate
Amlodipine Besylate
11 claims
- Atorvastatin Calcium
Atorvastatin Calcium
11 claims
- Hydrochlorothiazide
Hydrochlorothiazide
11 claims
- Irbesartan
Irbesartan
11 claims
- Sertraline Hcl
Sertraline Hcl
11 claims
| Drug | Claims |
|---|---|
| Synthroid Levothyroxine Sodium | 13 |
| Amlodipine Besylate | 11 |
| Atorvastatin Calcium | 11 |
| Hydrochlorothiazide | 11 |
| Irbesartan | 11 |
| Sertraline Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgery Physician Overview
How Annette Pascual Marrero, MD, MPH fits within the Surgery Physician landscape nationally.
36,199
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider
Annette Pascual Marrero, MD, MPH's 121 claims are below the specialty average of 169.
Nearby Surgery Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Pascual Marrero.
Dr. Anwar Abdul-Hadi
M.D.
Manati, PR
Dr. Guillermo Acaron Souffront
M.D.
San Juan, PR
Dr. Marcia Alayon-Rosario
MD
Ponce, PR
Dr. Osvaldo Alcaraz Diaz
M.D.
Bayamon, PR
Dr. Kathia Alejandro Serrano
MD
Manati, PR
Compare Surgery Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Puerto Rico medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Annette Pascual Marrero, MD, MPH's specialty? ▼
Annette Pascual Marrero, MD, MPH specializes in Surgery Physician and practices in San Juan, Puerto Rico. Credentials: MD, MPH.
How much does Annette Pascual Marrero, MD, MPH prescribe under Medicare Part D? ▼
In 2023, Annette Pascual Marrero, MD, MPH wrote 121 Medicare Part D claims totaling $7K in drug costs for 15 beneficiaries.
Where is Annette Pascual Marrero, MD, MPH located? ▼
Annette Pascual Marrero, MD, MPH is located at 1452 AVE ASHFORD, San Juan, PR, 00907. Phone: (939) 202-3008.
What is Annette Pascual Marrero, MD, MPH's NPI number? ▼
Annette Pascual Marrero, MD, MPH's National Provider Identifier (NPI) is 1437594819, issued on 04/30/2013.
Does Annette Pascual Marrero, MD, MPH prescribe more brand-name or generic drugs? ▼
Annette Pascual Marrero, MD, MPH's prescribing is 20% brand-name and 80% generic drugs by claim count, with $5K in brand drug costs.
How many Surgery Physician providers are there in the US? ▼
There are 36,199 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does Annette Pascual Marrero, MD, MPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Annette Pascual Marrero, MD, MPH's most frequently prescribed drugs include Synthroid, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Annette Pascual Marrero, MD, MPH accept Medicare? ▼
Annette Pascual Marrero, MD, MPH appears in CMS Medicare data with 121 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Annette Pascual Marrero, MD, MPH's credentials? ▼
Annette Pascual Marrero, MD, MPH's NPI is 1437594819 with credentials MD, MPH. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.