header-logo
Center for Microbiome Research
Center for Microbiome Research

Meet Our MCW Center for Microbiome Research Team

Director

headshot

Nita H. Salzman, MD, PhD

Professor, Pediatrics and Microbiology & Immunology; Director, Medical Scientist Training Program; Founding Director, Center for Microbiome Research

nsalzman@mcw.edu

(414) 955-4244

Antimicrobial Peptides, host-microbe interactions in the GI tract, microbiota in health and disease

Steering Committee

headshot

Joseph T. Barbieri, PhD

Professor, Microbiology & Immunology; Associate Director, Medical Scientist Training Program

jtb01@mcw.edu

Microbial Pathogenesis

headshot

Martin J. Hessner, PhD

Professor, Pediatrics (Endocrinology); Director, Max McGee Research Center for Juvenile Diabetes

mhessner@mcw.edu

The Microbiome in the Development and Progression of Type 1 Diabetes

headshot

John R. Kirby, PhD

Chair, Microbiology & Immunology; Walter Schroeder Professor in Microbiology and Immunology; Associate Director, Microbiome, Linda T. and John A. Mellowes Center for Genomic Sciences and Precision Medicine; Associate Director, Center for Microbiome Research

jkirby@mcw.edu

Microbial Signal Transduction

headshot

Sandra L. McLellan, PhD

Distinguished Professor, Lynde B. Uihlein Professor in Ecosystem Health, UWM School of Freshwater Sciences

mclellan@uwm.edu

Environmental Microbial Populations

Staff

headshot

Mary L. Holtz, PhD

Research Operations Manager, Pediatrics (Gastroenterology)

Jennifer Zeigelbauer

Manager, Gnotobiotic Facility and Bench Services

Amy Pan, PhD

Biostatistician; Associate Professor, Pediatrics (Bioinformatics and Quantitative Child Health)

Samantha Atkinson, PhD

Bioinformatics Analyst III, Microbiology & Immunology

Partners and Affiliations

headshot

Christopher J. Kristich, PhD

Professor; Director, Center for Infectious Disease Research

ckristich@mcw.edu

(414) 955-4141

headshot

Bradley W. Taylor, FAMIA

Chief Research Informatics Officer

btaylor@mcw.edu

(414) 805-7307

headshot

Calvin B. Williams, MD, PhD

Professor, Pediatrics and Microbiology & Immunology; Associate Dean of Research; Associate Director, Medical Scientist Training Program; Chief Scientific Officer, Children's Wisconsin Research Institute; Chief, Pediatric Rheumatology; Vice Chair, Research, Pediatrics

cbwillia@mcw.edu

(414) 266-6700

© 2025 Medical College of Wisconsin.  All rights reserved.  | Terms and Privacy | Web Accessibility Statement

Non-Discrimination, Anti-Harassment, and Legal Compliance Statement
The Medical College of Wisconsin (MCW) is committed to fostering a diverse community of outstanding faculty, staff, and students, as well as ensuring equal educational opportunity, employment, and access to services, programs, and activities, without regard to an individual's race, color, national origin, religion, age, disability, sex, gender identity/expression, sexual orientation, marital status, pregnancy, predisposing genetic characteristic, military status, or other legally protected classification. MCW maintains full compliance with all applicable federal, state, and local laws and regulations in pursuit of our missions. Consistent with federal guidance, we affirm our commitment to individual merit, fairness, and equal treatment in all aspects of academic and institutional decision-making.

MCW's policies, federal and state laws, and regulations prohibit unlawful discrimination and harassment. Employees, learners, students, applicants, or other members of the MCW community (including but not limited to vendors, visitors, and guests) may not be subjected to harassment that is prohibited by law or treated adversely or retaliated against based upon a protected characteristic.