Sonia Friedman is a Gastroenterology physician affiliated with Tufts Medical Center. OpenAlex indexes 329 publications with 9,562 citations (h-index 50). 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 fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
75 Francis Street
Brigham And Womens Hospital Division Of Gastroenterolog
Boston, MA 02115
Telephone
617-732-6389Registry record last updated 10 Aug 2007.
Industry payments
6 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Madrigal PharmaceuticalsProgram year20251 payment
- Gilead Sciences, Inc.Program year20251 payment
- PFIZER INC.Program year20241 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
73.7%Osmotic Laxative35.8%Gavilyte-G72%Gavilyte-C18%Peg-3350 And Electrolytes10%Part D≥132 patientsProton pump inhibitor13.2%Omeprazole75%Pantoprazole Sodium25%Part D<11 patients+ 5 more classes in this area
Cancer & immunology
17.3%Interleukin-12 Antagonist10.3%Stelara100%Part D<11 patientsTNF inhibitor4.1%Humira(Cf) Pen100%Part D<11 patients+ 1 more class in this area
Nervous system
5.3%Natural opium alkaloids5.3%Opium Tincture100%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.
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.”