Raymond Grenfell is an Endocrinology/Metabolic physician. OpenAlex indexes 20 publications with 200 citations (h-index 5).
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
41.7%Insulin Analog11.6%Novolog Flexpen20%Tresiba Flextouch U-10016%Novolog12%Soliqua 100-3310%Tresiba Flextouch U-2008%Toujeo Solostar7%Humalog5%Lantus Solostar5%Humalog Kwikpen U-1004%Insulin Lispro3%Lantus3%Levemir Flexpen3%Basaglar Kwikpen U-1002%Fiasp Flextouch2%Lyumjev Kwikpen U-1001%Part D<11 patientsBiguanide (metformin)6.3%Metformin Hcl65%Metformin Hcl Er35%Part D≥120 patients+ 12 more classes in this area
Cardiovascular
32.1%Statin12.1%Atorvastatin Calcium38%Pravastatin Sodium27%Rosuvastatin Calcium26%Simvastatin7%Lovastatin1%Livalo1%Part D<11 patientsACE inhibitor4.2%Lisinopril48%Ramipril27%Lisinopril-Hydrochlorothiazide15%Enalapril Maleate7%Trandolapril4%Part D<11 patients+ 14 more classes in this area
Hormonal (systemic)
22.1%l-Thyroxine21.1%Synthroid63%Levothyroxine Sodium36%Levoxyl1%Part D<11 patientsCalcium-sensing Receptor Agonist0.4%Cinacalcet Hcl100%Part D<11 patients+ 3 more classes in this area
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.
Bruce Bartholow Duncan
Universidade Federal do Rio Grande do Sul
Alireza Esteghamati
Tehran University of Medical Sciences
Paul Zimmet
Monash University
André Pascal Kengne
South African Medical Research Council
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.”