Dr. William Mast, FNP-C
What this data tells you about Dr. Mast
Dr. William Mast is a nurse practitioner - family in Greenville, TX, with 3 years in practice. Based on federal Medicare data, Dr. Mast performed 7,701 Medicare services across 4,623 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mast received a total of $7,030 from 23 pharmaceutical and/or device companies across 267 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in nurse practitioner - family. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Mast is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Destruction of precancerous skin growths, 2-14 | 2,418 | $4 | $20 |
| Destruction of precancerous skin growth, 1 | 968 | $28 | $196 |
| Office visit, established patient (20-29 min) | 958 | $54 | $263 |
| Destruction of skin growths (warts/lesions), 1-14 | 873 | $67 | $332 |
| Skin biopsy, tangential | 762 | $50 | $297 |
| Office visit, established patient (10-19 min) | 520 | $34 | $164 |
| Biopsy of related skin growth, each additional growth | 301 | $32 | $147 |
| New patient office visit (30-44 min) | 228 | $60 | $326 |
| Office visit, established patient (30-39 min) | 131 | $78 | $373 |
| New patient office or other outpatient visit, 15-29 minutes | 101 | $41 | $211 |
| Destruction of skin growth, 15 or more growths | 77 | $76 | $387 |
| Biopsy of ear | 68 | $40 | $282 |
| Destruction of precancer skin growth, 15 or more growths | 47 | $106 | $493 |
| Simple or single drainage of skin abscess | 40 | $77 | $367 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | 37 | $197 | $889 |
| Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | 37 | $114 | $522 |
| Drug injection, under skin or into muscle | 28 | $8 | $41 |
| New patient office visit (45-59 min) | 27 | $101 | $486 |
| Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm | 25 | $79 | $716 |
| Acne surgery | 24 | $66 | $340 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less | 16 | $165 | $770 |
| Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm | 15 | $56 | $502 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
Associated products mentioned in payments ›
Most payments (98%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 2% for nurse practitioner - family in TX.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Mast is a clinical cardiology specialist, with above-average Medicare volume (top 1% in TX), and high industry engagement (low-engagement, top 2%).
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
Is Dr. Mast experienced with destruction of precancerous skin growths, 2-14?
Does Dr. Mast receive payments from pharmaceutical companies?
How do Dr. Mast's costs compare to other nurse practitioner - familys in Greenville?
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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