Dr. Margarita Johnston, MD
What this data tells you about Dr. Johnston
Dr. Margarita Johnston is an urology physician in Dallas, TX, with 19 years of NPI registration. Based on federal Medicare data, Dr. Johnston performed 1,494 Medicare services across 1,062 unique beneficiaries.
Between the years covered by Open Payments, Dr. Johnston received a total of $43,949 from 71 pharmaceutical and/or device companies across 582 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in urology physician. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Johnston 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 |
|---|---|---|---|
| Automated urinalysis | 198 | $2 | $16 |
| Office visit, established patient (30-39 min) | 188 | $94 | $368 |
| Infectious disease DNA/RNA test | 169 | $34 | $166 |
| Bladder ultrasound after voiding | 142 | $8 | $97 |
| Office visit, established patient (20-29 min) | 136 | $68 | $250 |
| New patient office visit (45-59 min) | 124 | $116 | $565 |
| Office visit, established patient (10-19 min) | 81 | $41 | $150 |
| Initial hospital admission, moderate complexity | 71 | $103 | $470 |
| Diagnostic exam of bladder and urethra using an endoscope | 68 | $191 | $684 |
| Hospital follow-up visit, moderate complexity | 64 | $64 | $247 |
| Detection test by nucleic acid for organism, quantification | 39 | $42 | $222 |
| Biopsy of prostate gland | 24 | $188 | $775 |
| Ultrasonic guidance for needle placement | 24 | $48 | $633 |
| Blood draw (venipuncture) | 20 | $8 | $20 |
| Crushing of stone of ureter with insertion of stent using an endoscope | 19 | $361 | $1,607 |
| New patient office visit (30-44 min) | 18 | $75 | $372 |
| Insertion of stent in ureter using an endoscope | 16 | $97 | $2,685 |
| Insertion of temporary bladder tube | 15 | $36 | $260 |
| Yeast/candida DNA test | 13 | $34 | $123 |
| Detection test by nucleic acid for vancomycin resistance strep (vre), amplified probe technique | 13 | $34 | $182 |
| Detection test by nucleic acid for staphylococcus aureus (bacteria), amplified probe technique | 13 | $34 | $153 |
| Detection test by nucleic acid for staphylococcus aureus, methicillin resistant (mrsa bacteria), amplified probe technique | 13 | $34 | $153 |
| Detection test by nucleic acid for strep (streptococcus, group a), quantification | 13 | $41 | $146 |
| Detection test by nucleic acid for strep (streptococcus, group b), amplified probe technique | 13 | $34 | $123 |
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 ›
The majority of payments (61%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in urology physician and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 6% for urology physician 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. Johnston is a clinical cardiology specialist, with moderate Medicare volume, with speaking/promotional industry engagement in the top 6% of TX peers, with 19 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
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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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