Dr. Gretchen Johns, MD
What this data tells you about Dr. Johns
Dr. Gretchen Johns is a clinical pathology/laboratory medicine physician in Jacksonville, FL, with 19 years in practice. Based on federal Medicare data, Dr. Johns performed 72,425 Medicare services across 31,566 unique beneficiaries.
Between the years covered by Open Payments, Dr. Johns received a total of $73 from 2 pharmaceutical and/or device companies across 4 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in clinical pathology/laboratory medicine 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. Johns 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) | 57,095 | $8 | $39 |
| Prothrombin time test (blood clotting) | 9,300 | $4 | $76 |
| Blood creatinine level | 2,991 | $5 | $49 |
| Urine volume measurement | 1,155 | $4 | $33 |
| Coagulation assessment blood test, plasma or whole blood | 848 | $6 | $103 |
| Automated urinalysis | 248 | $2 | $27 |
| Coagulation function measurement, d-dimer; quantitative | 135 | $10 | $224 |
| Blood glucose (sugar) level | 121 | $4 | $39 |
| Comprehensive metabolic blood panel | 110 | $10 | $525 |
| Fibrinogen (factor 1) activity measurement | 69 | $10 | $101 |
| Clotting factor x assessment test, diluted | 67 | $9 | $165 |
| Coagulation function screening test with interpretation and report | 63 | $27 | $159 |
| Phospholipid test | 37 | $17 | $197 |
| Clotting factor viii (ahg) measurement | 27 | $18 | $290 |
| Clotting factor viii (vw factor) antigen | 22 | $22 | $302 |
| Measurement of blood coagulation and fibrinolysis (clot dissolving) function | 21 | $30 | $300 |
| Interpretation and report of genetic testing | 17 | $26 | $197 |
| Thrombin time, fibrinogen screening test, plasma | 16 | $6 | $94 |
| Clotting factor x (stuart-prower) measurement | 15 | $18 | $365 |
| Clotting factor xi (pta) measurement | 15 | $18 | $320 |
| Clotting factor ii prothrombin, measurement | 14 | $13 | $311 |
| Clotting factor vii (proconvertin, stable factor) | 14 | $18 | $330 |
| Clotting factor v (acg or proaccelerin) measurement | 13 | $17 | $360 |
| Basic metabolic blood panel | 12 | $8 | $345 |
Industry Payment Transparency
Open Payments through 2023 ↗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 (2023)
Associated products mentioned in payments ›
The majority of payments (55%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in clinical pathology/laboratory medicine physician and does not inherently indicate bias, but patients may wish to be aware.
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 2023 |
| 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. Johns is a mixed practice specialist, with above-average Medicare volume (top 6% in FL), and speaking/promotional industry engagement, with 19 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. Johns experienced with blood draw (venipuncture)?
Does Dr. Johns receive payments from pharmaceutical companies?
How do Dr. Johns's costs compare to other clinical pathology/laboratory medicine physicians in Jacksonville?
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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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