Erik Holzwanger is a Gastroenterology physician affiliated with Tufts Medical Center. OpenAlex indexes 125 publications with 239 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
800 Washington St
Boston, MA 021111552
Telephone
617-636-5000Provider last certified this registry record 5 Jan 2026.
Industry payments
13 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Boston Scientific CorporationProgram year202513 payments$11,383openpaymentsdata.cms.gov ↗
- Olympus Medical Systems CorporationProgram year20254 payments
- Micro-tech Endoscopy USA, Inc.Program year20251 payment
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
81.2%Osmotic Laxative49%Gavilyte-G61%Gavilyte-C24%Peg-3350 And Electrolytes15%Part D≥69 patientsProton pump inhibitor17%Omeprazole100%Part D≥17 patients+ 3 more classes in this area
Nervous system
9.4%Tricyclic Antidepressant9.4%Nortriptyline Hcl100%Part D<11 patientsSensory organs
5.2%Fluoroquinolone Antibacterial5.2%Ciprofloxacin Hcl100%Part D≥15 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 Gastric Peroral Endoscopic Myotomy (G-POEM) Performed by Early Career Endoscopists: A Multicenter Retrospective Study
Foregut The Journal of the American Foregut Society
2025 - S4093 Novel Hemostatic Gel and Powder as Rescue Agents for Arterial Bleeding Related to Lumen Apposing Metal Stent Placement
The American Journal of Gastroenterology
2024
Similar KOLs
Other experts from the same institution or the same specialty.
Andrew Levey, MD
Tufts Medical Center
Mark Sarnak, MD
Tufts Medical Center
James Udelson, MD
Tufts Medical Center
Nicholas Hill, MD
Tufts 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.”