Frederick Johlin is a Gastroenterology physician affiliated with University of Iowa. OpenAlex indexes 64 publications with 1,189 citations (h-index 20).
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingMedicare 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
75.8%Bile Acid43.6%Ursodiol100%Part D≥27 patientsAntidiarrheal microorganisms12.1%Creon100%Part D≥16 patients+ 3 more classes in this area
Cardiovascular
19.4%Aldosterone antagonist (MRA)7.3%Spironolactone100%Part D<11 patientsLoop diuretic6.2%Furosemide100%Part D<11 patients+ 1 more class in this area
Sensory organs
4.8%Fluoroquinolone Antibacterial4.8%Ciprofloxacin Hcl100%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.
NIH funding
1 NIH research award on record, funded 1985–1986 per NIH RePORTER. The latest:
Awards in the NIH RePORTER records where a principal investigator name matches this physician at an organization in their practice state. Latest award years shown; each row links to the project record on RePORTER.
Similar KOLs
Other experts from the same institution or the same specialty.
Mohammed Milhem, MBBS
University of Iowa
Lawrence Hunsicker, MD
University of Iowa
Michael Abramoff, MD, PhD
University of Iowa
William Coryell, MD
University of Iowa
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.”