Merbil Gonzalez Diaz, M.D.
NPI 1902878614 · Neurology Physician · Mayaguez, PR
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Merbil Gonzalez Diaz, M.D. is a Neurology Physician provider in Mayaguez, PR (NPI 1902878614).
Provider details
- NPI number
- 1902878614
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 13818 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
244 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 61 | $89 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 54 | $94 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 43 | $23 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $109 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 15 | $150 |
| Complete Ultrasound of Within the Brain Blood Flow |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Escitalopram Oxalate | 2,021 | 427 |
| Quetiapine Fumarate | 818 | 118 |
| Trazodone Hcl | 815 | 198 |
| Galantamine Hbrbrand: Galantamine Er | 812 | 160 |
| Mirtazapine | 782 | 181 |
| Memantine Hclbrand: Memantine Hcl Er | 713 | 114 |
| Rivastigmine | 634 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$561 across 9 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
- 2006-02-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Merbil Gonzalez Diaz's NPI number?
- Merbil Gonzalez Diaz's National Provider Identifier (NPI) is 1902878614, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Merbil Gonzalez Diaz's specialty?
- Merbil Gonzalez Diaz is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Merbil Gonzalez Diaz located?
- Merbil Gonzalez Diaz's practice location on file with NPPES is 351 Ave Hostos, Mayaguez, PR 00680-1502.
- What is Merbil Gonzalez Diaz's phone number?
- The practice phone number listed in the NPPES registry for Merbil Gonzalez Diaz is (787) 805-7319.
- Does Merbil Gonzalez Diaz accept Medicare?
- Merbil Gonzalez Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Merbil Gonzalez Diaz's NPI active?
- Yes — Merbil Gonzalez Diaz's NPI (1902878614) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.