Douglas Grunwald is a Gastroenterology physician. OpenAlex indexes 9 publications with 717 citations (h-index 6).
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
2200 Whitney Ave Ste 360
Hamden, CT 065183602
Telephone
203-281-4463Provider last certified this registry record 27 May 2021.
Industry payments
30 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Madrigal PharmaceuticalsProgram year202513 payments
- Ardelyx, Inc.Program year202511 payments
- ABBVIE INC.Program year202511 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.
Cancer & immunology
91.3%Integrin Receptor Antagonist73.2%Vedolizumab100%Part B, office-administered≥15 patientsTNF inhibitor18.2%Infliximab100%Part B, office-administered≥15 patientsMetabolism & gastrointestinal
8.1%Proton pump inhibitor5.2%Omeprazole49%Pantoprazole Sodium41%Esomeprazole Magnesium7%Dexlansoprazole Dr4%Part D<11 patientsGuanylate Cyclase-C Agonist0.7%Linzess81%Trulance19%Part D<11 patients+ 9 more classes in this area
Nervous system
0.3%Cholinesterase Inhibitor0.2%Pyridostigmine Bromide100%Part D<11 patientsTricyclic Antidepressant0.1%Amitriptyline 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.
- An Investigation into the Roles of ATG8 Proteins in Autophagy Initiation
University of Minnesota Digital Conservancy (University of Minnesota)
2018
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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.”