Daniel Freedberg is a Gastroenterology physician affiliated with Columbia University Irving Medical Center. OpenAlex indexes 252 publications with 14,864 citations (h-index 39); ClinicalTrials.gov lists 3 registered studies matched to this name. By OpenAlex citation count, this profile ranks in the top 10% of Gastroenterology profiles in the findmyKOL directory.
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingClinical trials
- Inulin for Infections in the Intensive Care Unit
Sponsor: Columbia University
- Prebiotic Fiber to Prevent Pathogen Colonization in the ICU
Sponsor: Columbia University
- Effect of Acid Suppression Medication on Pediatric Microbiome
Sponsor: Columbia University
Registered studies on ClinicalTrials.gov where the overall official or a site investigator name-matches this physician, confirmed against known institution/geography. Latest few shown; the full list is part of the full profile.
Industry payments
1 company reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
1 company with payments on record in CMS Open Payments (2021 onward), matched to this physician's NPI. The itemized breakdown by company, amount and year is part of the full profile. Why? →
Medicare prescribing footprint (2023)
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
82.9%Proton pump inhibitor35%Omeprazole64%Pantoprazole Sodium25%Esomeprazole Magnesium11%Part D<11 patientsGuanylate Cyclase-C Agonist28.2%Linzess100%Part D≥20 patients+ 3 more classes in this area
Nervous system
8.9%Natural opium alkaloids4.6%Opium Tincture100%Part D<11 patientsTricyclic Antidepressant4.3%Amitriptyline Hcl100%Part D<11 patientsCardiovascular
8.2%Bile Acid Sequestrant8.2%Cholestyramine100%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.
NIH funding
1 NIH research award on record, funded 2017–2020 per NIH RePORTER. The latest:
- Loss of Gastrointestinal Colonization Resistance and Antibiotic-Resistant Infections in the Intensive Care Unit
Columbia University Health Sciences
FY2020$127,662K23DK111847 - Loss of Gastrointestinal Colonization Resistance and Antibiotic-Resistant Infections in the Intensive Care Unit
Columbia University Health Sciences
FY2019$145,964K23DK111847 - Loss of Gastrointestinal Colonization Resistance and Antibiotic-Resistant Infections in the Intensive Care Unit
Columbia University Health Sciences
FY2018$166,212K23DK111847
Awards in the NIH RePORTER records where a principal investigator name matches this physician at an organization in their practice state. Latest award years shown; each row links to the project record on RePORTER.
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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.”