Larissa Allen is a Gastroenterology physician affiliated with University of Arizona. OpenAlex indexes 17 publications with 210 citations (h-index 7).
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 fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
6130 N La Cholla Blvd
Suite 200
Tucson, AZ 857413557
Telephone
520-219-8342Registry record last updated 5 Jan 2017.
Industry payments
32 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- ABBVIE INC.Program year202515 payments
- PFIZER INC.Program year20254 payments
- GENZYME CORPORATIONProgram year20252 payments
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Medicare prescribing footprint (2024)
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
88.8%Proton pump inhibitor47.6%Omeprazole49%Pantoprazole Sodium39%Dexlansoprazole Dr5%Lansoprazole4%Esomeprazole Magnesium3%Part D<11 patientsOsmotic Laxative10.5%Gavilyte-G55%Lactulose24%Peg-3350 And Electrolytes21%Part D<11 patients+ 11 more classes in this area
Cancer & immunology
3.8%Interleukin-12 Antagonist2.2%Stelara100%Part D<11 patientsPurine Antimetabolite0.9%Azathioprine100%Part D<11 patients+ 1 more class in this area
Anti-infectives
1.9%Penicillins with extended spectrum1.2%Amoxicillin-Clavulanate Potass100%Part D<11 patientsNitroimidazole Antimicrobial0.7%Metronidazole100%Part D≥12 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.
- Use of Sirolimus in the Treatment of Refractory Autoimmune Hepatitis
The American Journal of Medicine
2014 - Conscious Awakenings Are Commonly Associated With Acid Reflux Events in Patients With Gastroesophageal Reflux Disease
Clinical Gastroenterology and Hepatology
2010 - Increased oesophageal acid exposure at the beginning of the recumbent period is primarily a recumbent‐awake phenomenon
Alimentary Pharmacology & Therapeutics
2010 - ORIGINAL ARTICLES—ALIMENTARY TRACT Conscious Awakenings Are Commonly Associated With Acid Reflux Events in Patients With Gastroesophageal Reflux Disease2010
Similar KOLs
Other experts from the same institution or the same specialty.
Joseph Alpert, MD
University of Arizona
Karl Kern, MD
University of Arizona
Peter Reaven, MD
University of Arizona
Alison Stopeck, MD
University of Arizona
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.”