John Ringman, MD
Enriched profileClinical Professor of Neurology (Helene and Lou Galen Endowed Professor of Clinical Neurology), Keck School of Medicine of USC · Keck School of Medicine of USC
John Ringman is Clinical Professor of Neurology (Helene and Lou Galen Endowed Professor of Clinical Neurology), Keck School of Medicine of USC at Keck School of Medicine of USC. OpenAlex indexes 489 publications with 35,819 citations (h-index 77); ClinicalTrials.gov lists 4 registered studies with this person as an investigator. By OpenAlex citation count, this profile ranks in the top 5% of Neurology profiles in the findmyKOL directory.
Data verified 8 Oct 2026
Overview
Updated 14 Oct 2026
John Ringman, MD, is Clinical Professor of Neurology (Helene and Lou Galen Endowed Professor of Clinical Neurology), Keck School of Medicine of USC. The public record shows 489 publications with 35,819 citations (h-index 77), centered on Dementia and Cognitive Impairment Research, Alzheimer's disease research and treatments, Amyotrophic Lateral Sclerosis Research. It also documents an investigator role on 4 registered clinical trials, industry payments reported by 2 companies, 11 NIH-funded awards (2003–2025).
- Top research focus: Dementia and Cognitive Impairment Research
- 4 registered trials on ClinicalTrials.gov
- Open Payments reporting from 2 companies
Generated from the cited public record · current as of 14 Oct 2026. Every fact links its source below.
Indications focus
from trials led + research topicsResearch focus
OpenAlex concept fingerprintDrugs & molecules
across trials, industry payments and publicationsWorks with
trial sponsors and companies reporting paymentsScholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID; 5 in PubMed.
Total citations across indexed works.
Hirsch index (OpenAlex). i10-index 210.
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
Telephone
Practice address and telephone from the federal NPPES registry.
Sign in to view contact details →Clinical trials
Updated 14 Oct 2026
Listed as an investigator on 4 registered studies on ClinicalTrials.gov. The most recent:
- A Study of a Potential Disease Modifying Treatment in Individuals at Risk for or With a Type of Early Onset AD Caused by a Genetic Mutation
Sponsor: Washington University School of Medicine
- A Study of Potential Disease Modifying Treatments in Individuals at Risk for or With a Type of Early Onset AD Caused by a Genetic Mutation
Sponsor: Washington University School of Medicine
- A Positron Emission Tomography (PET) Study Evaluating Brain Metabolism of a Medical Food in Alzheimer's Disease
Sponsor: University of California, Los Angeles
Industry payments
Updated 14 Oct 2026
2 companies reported payments to CMS in program years 2022–2024. These are public disclosures, not judgments. The latest:
- Teva Pharmaceuticals USA, Inc.Program year20241 payment
- EISAI INC.Program year20221 payment
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.
Nervous system
100%N-methyl-D-aspartate Receptor Antagonist28.6%Memantine Hcl Er54%Memantine Hcl46%Part D≥26 patientsSSRI28.2%Escitalopram Oxalate61%Trazodone Hcl26%Sertraline Hcl13%Part D<11 patients+ 4 more classes in this area
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
Updated 14 Oct 2026
11 NIH research awards on record, funded 2003–2025 per NIH RePORTER. The latest:
- Validation of Imaging and Blood-based Small Vessel VCID Biomarkers in Multiethnic Population
University of Southern California
FY2025$1,282,792U01NS100614 - Validation of Imaging and Blood-based Small Vessel VCID Biomarkers in Multiethnic Population
University of Southern California
FY2024$1,286,604U01NS100614 - Phenotype and Genotype of Autosomal Dominant Alzheimer's Disease in Jalisco, Mexico
University of Southern California
FY2024$632,298R01AG069013
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- Retinal pathological features and proteome signatures of Alzheimer’s disease
Acta Neuropathologica
2023
Most-cited works
by citation count (OpenAlex)- 01Clinical and Biomarker Changes in Dominantly Inherited Alzheimer's DiseaseArticle3,922 citations2012
- 02
- 03New insights into the genetic etiology of Alzheimer’s disease and related dementiasArticle2,638 citations2022
- 04
- 05Blood–brain barrier breakdown is an early biomarker of human cognitive dysfunctionArticle1,814 citations2019
Network
Updated 14 Oct 2026
The people this person publishes with most, by number of co-authored papers. Names link to their own profile when we have one.
Online presence
Updated 14 Oct 2026
This person's own public accounts first, then places where others mention them. Two different things, listed separately.
Mentions by others
where others cite or feature them- Other
internalmedicine.usc.edu/wp-content/uploads/2025/10/10th-annual-brain-health-forum-flyer_9.22.25.pdf
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →internalmedicine.usc.edu ↗ - YouTube
lapl.org/bn/event/10842
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →lapl.org ↗
We list an account only when the public record ties it to this person. verified means we've confirmed the match in more than one place; provisional means it looks right but we're still confirming.
Background & recognition
Updated 14 Oct 2026
Credentials, appointments and honors, newest first, each linked to the public source it came from.
Education
degrees and training on record- MD
McGill University
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →keckmedicine.org ↗ - verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →keckmedicine.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →keck.usc.edu ↗
- BA
Psychology and Neurobiology, UC Berkeley
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →keckmedicine.org ↗
Editorial & leadership roles
journal and society appointments- Program Director
USC Neurobehavioral/Neuropsychiatry Fellowship Program
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →keck.usc.edu ↗
Secondary affiliations
appointments beyond the home institution- verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →keckmedicine.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →adrc.usc.edu ↗
Every item links to where we found it. verified means we've confirmed it in more than one place; provisional means we found it and are still confirming.
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