William Calhoun, MD
Enriched profileProfessor and Vice Chair for Research, Department of Internal Medicine (Divisions of Pulmonary Critical Care & Sleep Medicine and Allergy & Clinical Immunology); Sealy and Smith Distinguished Chair in Internal Medicine, University of Texas Medical Branch at Galveston · The University of Texas Medical Branch at Galveston
William Calhoun is Professor and Vice Chair for Research, Department of Internal Medicine (Divisions of Pulmonary Critical Care & Sleep Medicine and Allergy & Clinical Immunology); Sealy and Smith Distinguished Chair in Internal Medicine, University of Texas Medical Branch at Galveston at The University of Texas Medical Branch at Galveston. OpenAlex indexes 299 publications with 18,082 citations (h-index 65); ClinicalTrials.gov lists 8 registered studies with this person as an investigator. By OpenAlex citation count, this profile ranks in the top 10% of Pulmonary Disease profiles in the findmyKOL directory.
Data verified 14 Aug 2026
Overview
Updated 14 Oct 2026
William Calhoun, MD, is Professor and Vice Chair for Research, Department of Internal Medicine (Divisions of Pulmonary Critical Care & Sleep Medicine and Allergy & Clinical Immunology) at The University of Texas Medical Branch at Galveston. The public record shows 299 publications with 18,082 citations (h-index 65), centered on Asthma and respiratory diseases, Respiratory and Cough-Related Research, Chronic Obstructive Pulmonary Disease (COPD) Research. It also documents an investigator role on 8 registered clinical trials, industry payments reported by 16 companies, 3 NIH-funded awards (2005–2009).
- Most recent indexed publication: 2024 · Allergy, asthma & immunology research
- Top research focus: Asthma and respiratory diseases
- 8 registered trials on ClinicalTrials.gov
- Open Payments reporting from 16 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; 3 in PubMed.
Total citations across indexed works.
Hirsch index (OpenAlex). i10-index 159.
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 8 registered studies on ClinicalTrials.gov. The most recent:
- Viral Mucosal Reprogramming
Sponsor: The University of Texas Medical Branch, Galveston
- Study in Adult Asthmatic Patients With Allergic Bronchopulmonary Aspergillosis
Sponsor: Pulmatrix Inc.
- Protein Biomarker Discovery and Validation in Chronic Obstructive Pulmonary Disease (COPD) And Asthma
Sponsor: The University of Texas Medical Branch, Galveston
Industry payments
Updated 14 Oct 2026
16 companies reported payments to CMS in program years 2021–2025. These are public disclosures, not judgments. The latest:
- GENZYME CORPORATIONProgram year202513 payments$31,218openpaymentsdata.cms.gov ↗
- AQUESTIVE THERAPEUTICS, INC.Program year20252 payments$13,426openpaymentsdata.cms.gov ↗
- Regeneron Healthcare Solutions, Inc.Program year20252 payments
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.
Respiratory
78.2%Corticosteroid44.1%Symbicort34%Trelegy Ellipta32%Fluticasone Propionate23%Breyna12%Part D<11 patientsbeta2-Adrenergic Agonist21.3%Albuterol Sulfate Hfa100%Part D<11 patients+ 1 more class in this area
Dermatology
8.9%Interleukin-4 Receptor alpha Antagonist8.9%Dupixent Pen100%Part D<11 patientsMetabolism & gastrointestinal
7.4%Corticosteroid7.4%Prednisone100%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
Updated 14 Oct 2026
3 NIH research awards on record, funded 2005–2009 per NIH RePORTER. The latest:
- Epigenetic Mechanism Reprogramming Mucosal Anti-viral Immunity in Allergic Asthma
University of Wisconsin-Madison
FY2023$681,203U01AI136994 - Epigenetic Mechanism Reprogramming Mucosal Anti-viral Immunity in Allergic Asthma
University of Wisconsin-Madison
FY2022$682,362U01AI136994 - Epigenetic Mechanism Reprogramming Mucosal Anti-viral Immunity in Allergic Asthma
University of Wisconsin-Madison
FY2021$681,885U01AI136994
Publications
Updated 14 Oct 2026
Their five most recent publications, matched to their ORCID record and linked to PubMed.
- Comparison of Asthma Phenotypes in Severe Asthma Cohorts (SARP, U-BIOPRED, ProAR and COREA) From 4 Continents.
Allergy, asthma & immunology research
Article2024 - Alcohol and its metabolites dysregulate cellular bioenergetics and induce oxidative and endoplasmic reticulum stress in primary human bronchial epithelial cells.
Alcohol, clinical & experimental research
Article2024 - Cytokine-Induced Glucocorticoid Resistance from Eosinophil Activation: Protein Phosphatase 5 Modulation of Glucocorticoid Receptor Phosphorylation and Signaling.
Journal of immunology (Baltimore, Md.
Article2016
Most-cited works
by citation count (OpenAlex)- 01Identification of Asthma Phenotypes Using Cluster Analysis in the Severe Asthma Research ProgramArticle2,134 citations2009
- 02
- 03
- 04
- 05Tiotropium Bromide Step-Up Therapy for Adults with Uncontrolled AsthmaArticle512 citations2010
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.
Owned accounts
public accounts run by this person- Doximity
doximity.com/pub/william-calhoun-md-5288d8af
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 →doximity.com ↗ - LinkedIn
linkedin.com/in/william-j-calhoun-md-0522aa39
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 →linkedin.com ↗
Mentions by others
where others cite or feature them- Other
allergist.aaaai.org/find/detail.php
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 →allergist.aaaai.org ↗ - Other
utmb.edu/internalmedicine/divisions/pulmonary-critical-care-sleep-medicine/our-team/faculty/william-calhoun
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 →utmb.edu ↗ - Other
utmb.edu/scmm/Researcher-Profiles/calhoun
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 →utmb.edu ↗ - LinkedIn
LinkedIn: William J Calhoun MD, Professor and Vice Chair for Research, UTMB
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →linkedin.com ↗
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- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →health.usnews.com ↗
- Board-certified in Internal Medicine and Pulmonary Disease
American Board of Internal Medicine (ABIM)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →health.usnews.com ↗ - Allergy/immunology fellowship
University of Wisconsin
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗
Editorial & leadership roles
journal and society appointments- 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 →utmb.edu ↗
- Editorial board member
Journal of Allergy and Clinical Immunology
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Former editorial board member
American Journal of Respiratory and Critical Care Medicine
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Former chair
Program Committee, American Thoracic Society Assembly on Allergy, Immunology and Inflammation
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Section editor
Current Allergy and Asthma Reports
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Associate editor
Allergy and Asthma Proceedings
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Associate editor
Journal of Precision Respiratory Medicine
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Fellow
American College of Physicians (FACP)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Fellow
American College of Chest Physicians (FCCP)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Fellow
American Academy of Allergy, Asthma & Immunology (FAAAAI)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →allergist.aaaai.org ↗ - Fellow
American College of Allergy, Asthma and Immunology (FACAAI)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Member
American Thoracic Society
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Founding member
US Severe Asthma Research Program
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗ - Member
US Asthma Clinical Research Network
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗
Awards & honors
honors on the public record- 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 →utmb.edu ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →issuewire.com ↗
Secondary affiliations
appointments beyond the home institution- Sealy and Smith Distinguished Professor
Sealy Center for Molecular Medicine, UTMB
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →utmb.edu ↗
Media & interviews
press, podcasts and appearances- Biography/profile hosted on ReachMD
a physician medical-education media platform
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →reachmd.com ↗
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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