Melissa Williamson, APRN
NPI 1801346564 · Family Medicine Physician · Brownsville, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Williamson, APRN is a Family Medicine Physician provider in Brownsville, TX (NPI 1801346564).
Provider details
- NPI number
- 1801346564
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 1226353 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 28 | 15 |
| Methylprednisolone | 25 | 25 |
| Prednisone | 24 | 17 |
| Azithromycin | 22 | 21 |
| Ciprofloxacin Hcl | 19 | 13 |
| Potassium Chloride | 18 | 13 |
| Tamsulosin Hcl | 17 | — |
| Cefuroxime Axetilbrand: Cefuroxime |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$137 across 6 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
- 2016-10-06
- Last updated
- 2026-04-24
- Certified
- 2026-04-24
Frequently asked questions
- What is Melissa Williamson's NPI number?
- Melissa Williamson's National Provider Identifier (NPI) is 1801346564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Williamson's specialty?
- Melissa Williamson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Melissa Williamson located?
- Melissa Williamson's practice location on file with NPPES is 2114 Boca Chica Blvd, Brownsville, TX 78521-2228.
- What is Melissa Williamson's phone number?
- The practice phone number listed in the NPPES registry for Melissa Williamson is (956) 866-8860.
- Does Melissa Williamson accept Medicare?
- Melissa Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Williamson's NPI active?
- Yes — Melissa Williamson's NPI (1801346564) is active in the NPPES registry as of the last update on 2026-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.