Clinicians

Alexander N. Greiner, MD, CPI

Director and Physician Investigator

Board Certified Allergy and Immunology
ACRP Certified Principal Investigator (CPI)

Meet Dr. Greiner

Bob Geng, MD

Physician Investigator

Board Certified Allergy and Immunology
Board Certified Clinical Pharmacology
Board Certified Internal Medicine

Meet Dr. Geng

Michael J. Welch, MD

Physician Investigator

Board Certified Allergy and Immunology
Board Certified Pediatrics

Meet Dr. Welch

Kristen M. Walters, MD

Physician Investigator

Board Certified Allergy and Immunology
Board Certified Internal Medicine

Meet Dr. Walters

Susan S. Laubach, MD

Physician Investigator

Board Certified Allergy and Immunology
Board Certified Pediatrics

Meet Dr. Laubach

Sharon B. Levy, MSN, CPNP, FNP-C

Sub-investigator

Certified Pediatric and Family Nurse Practitioner

Meet Sharon

Catherine M. Churchman, MSN, FNP-BC

Sub-investigator

Certified Family Nurse Practitioner

Meet Katie

Samantha Nigrelli-Barrientos, MSN, CPNP-PC

Sub-investigator

Certified Pediatric Nurse Practitioner

Meet Samantha

Research Contact

Clinicians

Alexander N. Greiner, MD, CPI

Director and Physician Investigator

Bob Geng, MD

Physician Investigator

Michael J. Welch, MD

Physician Investigator

Kristen M. Walters, MD

Physician Investigator

Susan S. Laubach, MD

Physician Investigator

Sharon B. Levy, MSN, CPNP, FNP-C

Sub-investigator

Catherine M. Churchman, MSN, FNP-BC

Sub-investigator

Samantha Nigrelli-Barrientos, MSN, CPNP-PC

Sub-investigator

Research Staff

Susan K. Smith, BSRT, RCP, CCRC

Research Manager

Trudy Brass, BS

Business Manager

Teresa S. Lloyd, BS

Auxiliary Clinical Research Coordinator

Mary C. Vales, MA, CCRC

Senior Clinical Research Coordinator

Lori S. Nash, MA

Senior Clinical Research Coordinator

Silvia B. Cedillo, MA

Clinical Research Coordinator