NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1902878614 M.D.
Verify on CMS → Merbil Gonzalez Diaz, M.D.
Neurology Physician in Mayaguez, 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 19,866 in Neurology 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
13K
Medicare Part D claims · 1K beneficiaries · Neurology Physician avg: 1K
Industry payments
$561.18
9 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Merbil Gonzalez Diaz, M.D. filed 12,627 Medicare Part D claims in 2023 as a Neurology Physician in Mayaguez, Puerto Rico.
- 13K
- Part D claims, 2023
- $561.18
- industry payments (Sunshine Act)
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.
Merbil Gonzalez Diaz, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
12,627 Top 2% higher than 98% 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
◑
Board-eligible specialty (heuristic, not verified)
Merbil Gonzalez Diaz, M.D. 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 Merbil Gonzalez Diaz, M.D.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
12,627 10× vs specialty avg
Specialty distribution in Puerto Rico
How Neurology 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 Neurology 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).
Merbil Gonzalez Diaz, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 351 AVE HOSTOS, Mayaguez, PR, 00680, with a listed phone of (787) 805-7319. NPI 1902878614 was issued on 02/06/2006.
Medicare Part D records for calendar year 2023 show 12,627 prescription claims written by this provider, covering 1,030 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, with an opioid prescribing rate of 0.2%.
Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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 | 1902878614 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/06/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Merbil Gonzalez Diaz, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$561
Largest payer
EMD Serono, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
12,627
Total Claims
$1.0M
Total Drug Cost
1,030
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13,827
- Total Day Supply
- 409,146
- Generic Drug Cost
- $339K
- Opioid Claims
- 26 (0.2% rate)
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 75.3 years
- Avg HCC Risk Score
- 2.21
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 118, 65-74: 322, 75-84: 434, 85+: 156
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Merbil Gonzalez Diaz, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Escitalopram Oxalate
Escitalopram Oxalate
2,106 claims
- Trazodone Hcl
Trazodone Hcl
908 claims
- Mirtazapine 809
Mirtazapine
809 claims
- Quetiapine Fumarate 769
Quetiapine Fumarate
769 claims
- Galantamine Er 736
Galantamine Er
736 claims
- Memantine Hcl Er 712
Memantine Hcl Er
712 claims
- Rivastigmine 568
Rivastigmine
568 claims
- Gabapentin 567
Gabapentin
567 claims
| Drug | Claims |
|---|---|
| Escitalopram Oxalate | 2,106 |
| Trazodone Hcl | 908 |
| Mirtazapine | 809 |
| Quetiapine Fumarate | 769 |
| Galantamine Er Galantamine Hbr | 736 |
| Memantine Hcl Er Memantine Hcl | 712 |
| Rivastigmine | 568 |
| Gabapentin | 567 |
| Risperidone | 402 |
| Buspirone Hcl | 338 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Merbil Gonzalez Diaz, M.D. fits within the Neurology Physician landscape nationally.
19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Merbil Gonzalez Diaz, M.D.'s 12,627 claims are above the specialty average of 1,309.
Nearby Neurology Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Gonzalez Diaz.
Dr. Jose Acevedo
MD
Mayaguez, PR
Dr. Iris Acevedo-Marty
M.D.
Aguadilla, PR
Dr. Heriberto Acosta
M.D.
San Juan, PR
Dr. Marelisa Albelo Martinez
MD
San Juan, PR
Dr. Gishlaine Alfonso
MD
Hato Rey, PR
Compare Neurology 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 Neurology 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 Merbil Gonzalez Diaz, M.D.'s specialty? ▼
Merbil Gonzalez Diaz, M.D. specializes in Neurology Physician and practices in Mayaguez, Puerto Rico. Credentials: M.D..
How much does Merbil Gonzalez Diaz, M.D. prescribe under Medicare Part D? ▼
In 2023, Merbil Gonzalez Diaz, M.D. wrote 12,627 Medicare Part D claims totaling $1.0M in drug costs for 1,030 beneficiaries.
Where is Merbil Gonzalez Diaz, M.D. located? ▼
Merbil Gonzalez Diaz, M.D. is located at 351 AVE HOSTOS, Mayaguez, PR, 00680. Phone: (787) 805-7319.
What is Merbil Gonzalez Diaz, M.D.'s NPI number? ▼
Merbil Gonzalez Diaz, M.D.'s National Provider Identifier (NPI) is 1902878614, issued on 02/06/2006.
Does Merbil Gonzalez Diaz, M.D. prescribe opioids? ▼
Yes, Merbil Gonzalez Diaz, M.D. had 26 opioid claims in 2023 with an opioid prescribing rate of 0.2%.
How many Neurology Physician providers are there in the US? ▼
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does Merbil Gonzalez Diaz, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Merbil Gonzalez Diaz, M.D.'s most frequently prescribed drugs include Escitalopram Oxalate, Trazodone Hcl, Mirtazapine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Merbil Gonzalez Diaz, M.D. accept Medicare? ▼
Merbil Gonzalez Diaz, M.D. appears in CMS Medicare data with 12,627 Part D claims and 1,030 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Merbil Gonzalez Diaz, M.D.'s credentials? ▼
Merbil Gonzalez Diaz, M.D.'s NPI is 1902878614 with credentials M.D.. 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.