Richard Arroyo-Diaz, MD
NPI 1629005418 · Internal Medicine Physician · Port Lavaca, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Arroyo-Diaz, MD is a Internal Medicine Physician provider in Port Lavaca, TX (NPI 1629005418).
Provider details
- NPI number
- 1629005418
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- J3731 (TX)
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
14 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 14 | $61 |
Typical Medicare-allowed amounts for these services range $61–$61 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 154 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 642 | 165 |
| Meloxicam | 555 | 149 |
| Atorvastatin Calcium | 433 | 115 |
| Levothyroxine Sodium | 415 | 98 |
| Pantoprazole Sodium | 372 | 100 |
| Irbesartan | 315 | 85 |
| Metoprolol Succinate | 298 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$114 across 5 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
- 2006-06-27
- Last updated
- 2022-07-21
Frequently asked questions
- What is Richard Arroyo-Diaz's NPI number?
- Richard Arroyo-Diaz's National Provider Identifier (NPI) is 1629005418, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Arroyo-Diaz's specialty?
- Richard Arroyo-Diaz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Arroyo-Diaz located?
- Richard Arroyo-Diaz's practice location on file with NPPES is 1016 N Virginia St, Port Lavaca, TX 77979-3000.
- What is Richard Arroyo-Diaz's phone number?
- The practice phone number listed in the NPPES registry for Richard Arroyo-Diaz is (361) 552-0325.
- Does Richard Arroyo-Diaz accept Medicare?
- Richard Arroyo-Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Arroyo-Diaz's NPI active?
- Yes — Richard Arroyo-Diaz's NPI (1629005418) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.