Dr. Maria Vallejo-Nieto, M.D.
What this data tells you about Dr. Vallejo-Nieto
Dr. Maria Vallejo-Nieto is a family medicine in Sherman, TX, with 16 years in practice. Based on federal Medicare data, Dr. Vallejo-Nieto performed 2,812 Medicare services across 1,740 unique beneficiaries.
Between the years covered by Open Payments, Dr. Vallejo-Nieto received a total of $3,601 from 39 pharmaceutical and/or device companies across 207 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in family medicine. 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. Vallejo-Nieto 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 |
|---|---|---|---|
| Blood draw (venipuncture) | 498 | $8 | $15 |
| Office visit, established patient (20-29 min) | 423 | $59 | $178 |
| Comprehensive metabolic blood panel | 326 | $10 | $63 |
| Lipid panel (cholesterol and triglycerides) | 267 | $13 | $67 |
| Complete blood count (CBC) with differential | 218 | $8 | $46 |
| Annual wellness visit, follow-up | 144 | $125 | $257 |
| Urinalysis, manual | 139 | $3 | $9 |
| Thyroid stimulating hormone (TSH) test | 133 | $16 | $70 |
| Hemoglobin A1c test (diabetes monitoring) | 130 | $10 | $29 |
| Free thyroxine (T4) test | 76 | $9 | $32 |
| Flu vaccine, high-dose | 51 | $72 | $147 |
| Flu vaccine administration | 47 | $30 | $40 |
| Thyroid hormone, t3 measurement, free | 39 | $17 | $100 |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | 32 | $16 | $33 |
| Prostate cancer screening; prostate specific antigen test (psa) | 32 | $19 | $64 |
| Automated urinalysis | 28 | $2 | $12 |
| Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza | 27 | $60 | $174 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 26 | $282 | $565 |
| Office visit, established patient (30-39 min) | 25 | $72 | $253 |
| Urinalysis with microscopic exam | 24 | $3 | $15 |
| Basic metabolic blood panel | 22 | $8 | $28 |
| Red blood cell sedimentation rate, to detect inflammation, non-automated | 19 | $4 | $17 |
| Administration of vaccine | 19 | $15 | $44 |
| Stool analysis for blood to screen for colon tumors | 15 | $4 | $17 |
| Drug injection, under skin or into muscle | 14 | $10 | $49 |
| Pneumonia vaccine administration | 14 | $30 | $50 |
| Electrocardiogram (EKG), 12-lead | 12 | $9 | $80 |
| Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | 12 | $160 | $324 |
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 (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
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. Vallejo-Nieto is a clinical cardiology specialist, with above-average Medicare volume (top 9% in TX), and high industry engagement (low-engagement, top 17%), with 16 years of practice experience.
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. Vallejo-Nieto experienced with blood draw (venipuncture)?
Does Dr. Vallejo-Nieto receive payments from pharmaceutical companies?
How do Dr. Vallejo-Nieto's costs compare to other family medicines in Sherman?
What does Data Coverage mean?
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Explore related providers
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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