John Rivas is a Gastroenterology physician affiliated with Broward Health. OpenAlex indexes 36 publications with 318 citations (h-index 9).
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Medicare prescribing footprint (2023)
The drugs this prescriber writes for Medicare patients, grouped by drug class and therapeutic area. Every percentage is a share of their total prescribing, so you can see what they prescribe most. These are proportions, not patient counts or dollar amounts. No condition is inferred: the claims record what was prescribed, never why.
Metabolism & gastrointestinal
59.1%Proton pump inhibitor23.2%Pantoprazole Sodium87%Omeprazole9%Esomeprazole Magnesium4%Part D<11 patientsAnticholinergic7.9%Dicyclomine Hcl100%Part D≥65 patients+ 12 more classes in this area
Nervous system
20%General Anesthetic20%Propofol100%Part B, office-administered≥15 patientsCancer & immunology
9.4%Calcineurin inhibitor8.3%Tacrolimus100%Part D≥38 patientsKinase inhibitor1.1%Sirolimus100%Part D<11 patients
Drug classes come from the WHO ATC and U.S. National Library of Medicine (RxClass) classifications; prescribing counts come from the CMS Medicare Part D Prescribers file. Each drug is counted once, under its primary class. Medicare fee-for-service only, so no Medicare Advantage, commercial, or pediatric prescribing is included. CMS publishes this data about 17 months after the fact.
Similar KOLs
Other experts from the same institution or the same specialty.
A basic profile from our physician directory: identity and practice contact from the federal NPPES registry, research from OpenAlex, trials from ClinicalTrials.gov, payments from CMS Open Payments — shown itemized where we have matched records, as a count where we only have a total. This person hasn't been through our full identity-adjudication pipeline yet, so funding, congress activity and public presence aren't shown. Absence of a section means “not yet looked,” never “none found.”