John Levenick is a Gastroenterology physician affiliated with Penn State Milton S. Hershey Medical Center. OpenAlex indexes 114 publications with 1,263 citations (h-index 17); ClinicalTrials.gov lists 3 registered studies matched to this name.
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingClinical trials
- Hybrid APC Assisted EMR for Large Colon Polyps
Sponsor: Milton S. Hershey Medical Center
- Head to Head Comparison of Two Needles EUS Guided FNB
Sponsor: Milton S. Hershey Medical Center
- Rectal Indomethacin to Prevent Post-Endoscopic Retrograde Cholangiopancreatography (ERCP) Pancreatitis
Sponsor: Dartmouth-Hitchcock Medical Center
Registered studies on ClinicalTrials.gov where the overall official or a site investigator name-matches this physician, confirmed against known institution/geography. Latest few shown; the full list is part of the full profile.
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.
Blood & clotting
37.9%Solutions for parenteral nutrition37.9%Peg 3350-Electrolyte100%Part D≥23 patientsMetabolism & gastrointestinal
34.8%Proton pump inhibitor34.8%Omeprazole100%Part D<11 patientsNervous system
27.3%Opioid Agonist27.3%Oxycodone 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.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- Efficacy and Safety of Linaclotide as an Adjunct to Polyethylene Glycol in Bowel Preparation: A Meta‐Analysis
Journal of Digestive Diseases
2025 - COMPARABLE LONG-TERM EFFICACY OF COLD AND HOT EMR OF LARGE COLON POLYPS - FOLLOW UP RESULTS OF A RANDOMIZED TRIAL
Gastrointestinal Endoscopy
2025
Similar KOLs
Other experts from the same institution or the same specialty.
Nancy Olsen, MD
Penn State Milton S. Hershey Medical Center
Joel Sorosky, MD
Penn State Milton S. Hershey Medical Center
Shin Mineishi, MD
Penn State Milton S. Hershey Medical Center
Catharine Paules, MD
Penn State Milton S. Hershey Medical Center
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.”