Andrew Roorda is a Gastroenterology physician affiliated with Palo Alto Medical Foundation. OpenAlex indexes 35 publications with 244 citations (h-index 8).
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
300 Pasteur Dr
Palo Alto, CA 943042203
Telephone
304-293-4123Registry record last updated 18 Jun 2013.
Industry payments
19 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- ABBVIE INC.Program year20255 payments
- Janssen Biotech, Inc.Program year20254 payments
- Salix Pharmaceuticals, a division of Bausch Health US, LLCProgram year20253 payments
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- Great Weight, Low Pressure–One Problem: GLP-1 Receptor Agonist-Associated Colonic Ischemia
Digestive Diseases and Sciences
2025 - GI Mucosal Injury and Bleeding: Association with Sevelamer Crystals
Journal of Gastrointestinal & Digestive System
2016 - Mellow Yellow: Diagnosis and Management of Multifactorial Postoperative Jaundice
Digestive Diseases and Sciences
2015 - Update on Foreign Bodies in the Esophagus: Diagnosis and Management
Current Gastroenterology Reports
2013
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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.”