Naiara Alvarez, MD
NPI 1578873857 · Rheumatology Physician · Harlingen, TX
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Naiara Alvarez, MD is a Rheumatology Physician provider in Harlingen, TX (NPI 1578873857).
Provider details
- NPI number
- 1578873857
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- Q5331 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 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
1,830 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) |
|---|---|---|
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 426 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 404 | $129 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 285 | $15 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 264 | $28 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 231 | $128 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 139 | $61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tramadol Hcl | 437 | 84 |
| Prednisone | 414 | 209 |
| Hydroxychloroquine Sulfate | 352 | 204 |
| Tramadol Hcl/Acetaminophenbrand: Tramadol Hcl-Acetaminophen | 328 | 84 |
| Etanerceptbrand: Enbrel Mini | 290 | 37 |
| Tocilizumabbrand: Actemra | 288 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,986 across 80 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
- 2010-10-20
- Last updated
- 2025-06-04
- Certified
- 2025-06-04
Frequently asked questions
- What is Naiara Alvarez's NPI number?
- Naiara Alvarez's National Provider Identifier (NPI) is 1578873857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Naiara Alvarez's specialty?
- Naiara Alvarez is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Naiara Alvarez located?
- Naiara Alvarez's practice location on file with NPPES is 512 Victoria Ln Ste 7, Harlingen, TX 78550.
- What is Naiara Alvarez's phone number?
- The practice phone number listed in the NPPES registry for Naiara Alvarez is (956) 423-1112.
- Does Naiara Alvarez accept Medicare?
- Naiara Alvarez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Naiara Alvarez's NPI active?
- Yes — Naiara Alvarez's NPI (1578873857) is active in the NPPES registry as of the last update on 2025-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.