Christianna Kreiss is a Gastroenterology physician affiliated with VA Pittsburgh Healthcare System. OpenAlex indexes 37 publications with 1,324 citations (h-index 17).
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 (2022)
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
68.6%Proton pump inhibitor35.2%Omeprazole62%Pantoprazole Sodium38%Part D<11 patientsOsmotic Laxative33.3%Gavilyte-G57%Peg-3350 And Electrolytes43%Part D≥19 patientsBlood & clotting
31.4%Solutions for parenteral nutrition31.4%Peg 3350-Electrolyte100%Part D≥32 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.
- External nasal dilator decreases N95 respirator-related respiratory effort and symptoms in gastrointestinal endoscopy unit staff
Endoscopy International Open
2022 - Acute physiologic effects of N95 respirator use on gastroenterologists performing simulated colonoscopy
Gastrointestinal Endoscopy
2021 - S0545 Impact of Colonoscopy Bowel Preparation and Intra-Procedural Volume of Colonic Irrigation (VOCI) on Serum Electrolytes
The American Journal of Gastroenterology
2020
Similar KOLs
Other experts from the same institution or the same specialty.
Aref Rahman, MD
VA Pittsburgh Healthcare System
Kristina Gerszten, MD
VA Pittsburgh Healthcare System
John Gurklis, MD
VA Pittsburgh Healthcare System
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.”