Meet Our Team
System Leadership
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Michael Postelnick, RPh BCPS AQ-Infectious Diseases
System Program Director, Antimicrobial and Diagnostic Stewardship Email: [email protected] Read Dr. Postelnick's Bio
Michael Postelnick currently is System Coordinator, Antimicrobial Stewardship and Senior Infectious Diseases Pharmacist at Northwestern Medicine, a multi-hospital system in the Chicago area. He practices at McHenry Hospital, Huntley Hospital and Woodstock Hospital and is board certified in Pharmacotherapy with Added Qualifications in Infectious Diseases. He currently holds adjunct faculty status at Midwestern University College of Pharmacy as well as an appointment as Lecturer in Pharmacology in the Northwestern University Feinberg School of Medicine Department of Medical Education. He has authored over 65 peer-reviewed publications. He has been involved in the education and training of pharmacy students and pharmacy residents for over 30 years. Mr. Postelnick received his Pharmacy degree from the University of Illinois in 1976 and completed a residency in Pharmacy and Pharmacology at Rush University Medical Center in 1980. He became board certified in 2003. In 2008, he received the Outstanding Clinical Practice in Infectious Diseases Pharmacotherapy Award from the Society of Infectious Diseases Pharmacists. Mr. Postelnick has served as Chair of the Society of Infectious Diseases Antimicrobial Stewardship Certificate Committee in 2013 and 2014. He currently serves on the Vizient Pharmacy Council Antimicrobial Stewardship Committee and as Chair of the Vizient Pharmacy Council Research Committee. |
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Jaime L. Borkowski, PharmD, BCIDP, BCPS
NM ADSP Practice Coordinator, Practice Advancement and Data Management Email: [email protected] READ DR. BORKOWSKI'S BIO
Dr. Jaime Borkowski received a Doctor of Pharmacy degree in 2001 at Butler University in Indianapolis, IN, and completed a Pharmacy Practice Residency in 2002 at Northwestern Memorial Hospital in Chicago, IL. She is currently a Practice Coordinator for the NM Antimicrobial and Diagnostic Stewardship Program (ADSP) and the lead Antimicrobial Stewardship Pharmacist at NM Delnor Hospital, where she has been working the past 15 years to develop the program. Dr. Borkowski serves as a preceptor for clinical rotations for pharmacy residents and students. Dr. Borkowski has presented multiple research posters in the area of antimicrobial stewardship at national meetings such as ICAAC and IDWeek, and is an active member of national organizations including ACCP, SIDP, and ICHP |
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W. Justin Moore, PharmD, BCPS, BCIDP
NM ADSP Practice Coordinator, Informatics, Regulatory, and Diagnostic Standardization Email: [email protected] READ DR. MOORE'S BIO
Dr. Justin Moore, PharmD is an Infectious Diseases Clinical Pharmacist at Northwestern Memorial Hospital in Chicago, Illinois. Justin is a graduate of the University of Georgia, where he earned his Doctor of Pharmacy degree in 2018 after receiving a Bachelor of Arts in Spanish from the University of Virginia. He completed a PGY-1 & PGY-2 ID Pharmacy Residency at Northwestern Memorial Hospital. His current role includes infectious diseases clinical consult services, antimicrobial stewardship, and clinical outcomes research. He is an active member of the Society of Infectious Diseases Pharmacists, American College of Clinical Pharmacy, American Society of Health-System Pharmacists, and the Illinois Council of Health-System Pharmacists. |
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Erin Weslander, PharmD, BCIDP
NM ADSP Practice Coordinator, Clinical Innovation and Education Email: [email protected] READ DR. WESLANDER'S BIO
Dr. Erin Weslander is an Infectious Diseases and Antimicrobial Stewardship Pharmacist at Northwestern Memorial Hospital in Chicago, Illinois. Erin is a graduate of the University of Minnesota College of Pharmacy – Twin Cities campus in 2016. She completed a PGY-1 and PGY-2 Infectious Diseases Pharmacy Residency at the University of Minnesota Medical Center in Minneapolis, Minnesota. She spent 3.5 years as the Infectious Diseases Pharmacist at UPMC Children's Hospital of Pittsburgh before transitioning back to adult infectious diseases at Northwestern in 2022. Her interests include quality improvement, multi-drug resistant infections, and One Health. |
Northwestern Memorial Hospital
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Christie Bertram, PharmD, BCIDP
Infectious Diseases Pharmacist, PGY2 Residency Program Director Northwestern Memorial Hospital Adjunct Assistant Professor of Pharmacy Practice Rosalind Franklin University College of Pharmacy Email: [email protected] Read Dr. Bertram's BIO
Dr. Christie Bertram is an Infectious Diseases and Antimicrobial and Diagnostic Stewardship Clinical Pharmacist at Northwestern Memorial Hospital in Chicago, IL and an Adjunct Assistant Professor of Pharmacy Practice at Rosalind Franklin University College of Pharmacy. She obtained her Doctor of Pharmacy degree from Butler University College of Pharmacy & Health Sciences and went on to complete a PGY-1 Pharmacy Practice Residency at Northwestern Memorial Hospital and a PGY-2 Infectious Diseases Residency at Northwestern Memorial Hospital and Midwestern University Chicago College of Pharmacy. Dr. Bertram’s primary interest areas include antimicrobial stewardship, treatment of multi-drug resistant infections, antibiotic allergies, as well as microbiology and rapid diagnostic testing. She is an active member of the Society of Infectious Diseases Pharmacists. Her research interests include antimicrobial pharmacokinetics in critically ill patients, assessing the impact of penicillin allergy labels on broad-spectrum antibiotic use, and evaluating the impact of rapid diagnostic testing on antimicrobial optimization. |
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Muhammad Dhanani, MD
Infectious Diseases Physician, Antimicrobial Stewardship Instructor Northwestern University Feinberg School of Medicine Email: [email protected] Read Dr. Dhanani's Bio
Dr. Muhammad Dhanani is an infectious diseases physician and clinical instructor in the Division of Medicine at Northwestern University's Feinberg School of Medicine. He completed internal medicine residency and infectious disease fellowship at Boston University School of Medicine/Boston Medical Center, where he also completed an advanced fellowship in antibiotic stewardship, hospital epidemiology & infection control. Between residency and fellowship, he worked for two years as a hospitalist at Mount Auburn Hospital, a community-based teaching hospital with an independent internal medicine residency program and an affiliation with Harvard Medical School. During his hospitalist years, he completed a fellowship in health professional education. His medical degree is from University of Michigan Medical School. His interests include development of antibiotic stewardship education materials using established techniques in medical education, and other domains of stewardship such as diagnostic stewardship and vascular access device stewardship. |
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W. Justin Moore, PharmD, BCPS, BCIDP
Infectious Diseases Pharmacist Northwestern Memorial Hospital Email: [email protected] Read Dr. Moore's Bio
Dr. Justin Moore, PharmD is an Infectious Diseases Clinical Pharmacist at Northwestern Memorial Hospital in Chicago, Illinois. Justin is a graduate of the University of Georgia, where he earned his Doctor of Pharmacy degree in 2018 after receiving a Bachelor of Arts in Spanish from the University of Virginia. He completed a PGY-1 & PGY-2 ID Pharmacy Residency at Northwestern Memorial Hospital. His current role includes infectious diseases clinical consult services, antimicrobial stewardship, and clinical outcomes research. He is an active member of the Society of Infectious Diseases Pharmacists, American College of Clinical Pharmacy, American Society of Health-System Pharmacists, and the Illinois Council of Health-System Pharmacists. |
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N. Jim Rhodes, PharmD, MSc, BCPS-AQ Infectious Diseases
Infectious Diseases Pharmacist Northwestern Memorial Hospital Associate Professor of Pharmacy Practice Midwestern University College of Pharmacy, Downers Grove Campus Email: [email protected] Midwestern University Faculty Profile |
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Marc H. Scheetz, PharmD, MSc, FCCP
Infectious Diseases Pharmacist Northwestern Memorial Hospital Associate Dean of Research and Professor, College of Pharmacy Professor, College of Graduate Studies, Departments of Pharmacology and Biomedical Sciences Midwestern University College of Pharmacy, Downers Grove Campus Director, Pharmacometrics Center of Excellence Infectious Diseases Pharmacist, Northwestern Medicine Email: [email protected] Midwestern University Faculty Profile |
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Sarah Sutton, MD
Infectious Diseases Physician, Antimicrobial Stewardship Medical Director Healthcare Epidemiology and Infection Prevention Member Northwestern University Feinberg School of Medicine Email: [email protected] Read Dr. Sutton's bio
Dr. Sarah Sutton is an infectious disease physician at Northwestern Memorial Hospital and an associate professor at Northwestern University Feinberg School of Medicine. Her medical degree is from Loyola University Stritch School of Medicine, her Internal Medicine/Pediatrics residency is from University of Michigan, Ann Arbor, and her Fellowship in Adult and Pediatric Infectious Diseases is from University of Illinois and The University of Chicago. She has been a member of the NMH Antimicrobial Stewardship Program since 2002 and the medical director since 2010. She is honored to work with the NMH and NM System community of health care workers. She believes that by working and learning together we can decrease antibiotic overuse, thereby improving the safety of our patients. |
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Sheila Wang, PharmD, BCPS, BCIDP
Infectious Diseases Pharmacist Northwestern Memorial Hospital Professor of Pharmacy Practice Midwestern University College of Pharmacy, Downers Grove Campus Email: [email protected] Midwestern University Faculty Profile |
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Erin Weslander, PharmD, BCIDP
Infectious Diseases and Antimicrobial Stewardship Clinical Pharmacist Northwestern Memorial Hospital Email: [email protected] Read Dr. weslander's Bio
Dr. Erin Weslander is an Infectious Diseases and Antimicrobial Stewardship Pharmacist at Northwestern Memorial Hospital in Chicago, Illinois. Erin is a graduate of the University of Minnesota College of Pharmacy – Twin Cities campus in 2016. She completed a PGY-1 and PGY-2 Infectious Diseases Pharmacy Residency at the University of Minnesota Medical Center in Minneapolis, Minnesota. She spent 3.5 years as the Infectious Diseases Pharmacist at UPMC Children's Hospital of Pittsburgh before transitioning back to adult infectious diseases at Northwestern in 2022. Her interests include quality improvement, multi-drug resistant infections, and One Health. |
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Teresa Zembower, MD
Infectious Diseases Physician, Microbiology Laboratory Associate Director Healthcare Epidemiologist Northwestern University Feinberg School of Medicine Email: [email protected] |
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Justin Shiau, PharmD
Infectious Diseases Pharmacotherapy Fellow Midwestern University College of Pharmacy, Downers Grove Campus Northwestern Memorial Hospital Email: [email protected] Read Dr. SHIAU's Bio
Dr. Justin Shiau is an Infectious Diseases Pharmacotherapy fellow at Midwestern University College of Pharmacy and Northwestern Memorial Hospital. He obtained his Doctor of Pharmacy degree from Southern Illinois University Edwardsville School of Pharmacy in 2022. He then went on to complete a PGY-1 Pharmacy Practice Residency at Northwestern Medicine Central DuPage Hospital. Dr. Shiau's interest areas include antimicrobial stewardship, treatment of multi-drug resistant infections, and pharmacy education and academia. He is excited to become involved in current research efforts in drug dosing, pharmacokinetic and pharmacodynamic relationships, and toxicodynamics of antibiotic therapy. |
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Joel Kennedy, PharmD
PGY2 Infectious Diseases Resident Northwestern Memorial Hospital Email: [email protected] Read Dr. KENNEDY's Bio
Dr. Kennedy is a PGY2 Infectious Diseases Pharmacy Resident at Northwestern Memorial Hospital. He is from Jackson, Mississippi and is a graduate of the University of Mississippi School of Pharmacy, where he earned his PharmD degree in 2020. He completed his PGY-1 Pharmacy Residency at Princeton Baptist Medical Center in Birmingham, Alabama. Dr. Kennedy's professional interests include Gram-negative resistance, rapid diagnostics, and infectious diseases in the critically ill. |
Lake Forest Hospital
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Stephen Grohmann, MD
Infectious Diseases Physician, Antimicrobial Stewardship and Infection Prevention Medical Director Northwestern Medicine Lake Forest Hospital Email: [email protected] |
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Rishita Shah, PharmD, BCPS
Antimicrobial Stewardship Clinical Pharmacist Northwestern Medicine Lake Forest Hospital Email: [email protected] Read Dr. Shah's Bio
Dr. Rishita Shah is a Clinical Pharmacist and part of the Antimicrobial Stewardship team at Lake Forest Hospital. Dr. Shah received her bachelors from the University of Illinois at Chicago in Biology and Psychology. She went on to obtain her Doctorate of Pharmacy from Howard University in Washington, D.C. Dr. Shah has eight years of clinical experience in various areas of pharmacy practice, but has always taken special interest in infectious diseases. Currently, she along with her colleagues are working to build and bring more visibility to antimicrobial stewardship at Lake Forest Hospital. |
Central DuPage Hospital
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Luis A. Manrique, MD
Infectious Diseases Physician, Antimicrobial Stewardship Medical Director Northwestern Medicine Central DuPage Hospital Northwestern Medicine Marianjoy Rehabilitation Hospital Email: [email protected] Read Dr. Manrique's Bio
Dr. Luis A. Manrique, MD completed his medical education at Universidad Peruana Cayetano Heredia in Lima, Peru. Followed by internship and residency training in internal medicine at John H Stroger Jr Hospital of Cook County, Chicago, IL and a fellowship in Infectious Disease at Rush University Medical Center. He practices as an Infectious Disease consultant at Northwestern Medicine Central DuPage Hospital in Winfield IL and he is the medical director of Antibiotic Stewardship and Infection Prevention at both Central DuPage Hospital and Marianjoy Rehabilitation Hospital. Dr. Manrique works with pharmacy in the development of guidelines and protocols to promote appropriate prescribing of antimicrobials in the hospital setting. |
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Radhika S. Polisetty, PharmD, BCIDP, BCPS, FIDSA
Infectious Diseases Clinical Specialist Northwestern Medicine Central DuPage Hospital Associate Professor of Pharmacy Practice Midwestern University College of Pharmacy, Downers Grove Campus Email: [email protected] Read Dr. Polisetty's Bio
Dr. Radhika S. Polisetty is an Associate Professor in the Department of Pharmacy Practice at Midwestern University Chicago College of Pharmacy. She also practices as a Clinical Specialist, Infectious Diseases at Northwestern Medicine Central DuPage Hospital in Winfield IL. Dr. Polisetty graduated from the University Of Kentucky College Of Pharmacy and went on to complete a PGY1 Pharmacy Practice residency and a PGY 2 Specialty residency in Infectious Diseases at the University of Pittsburgh Medical Center in Pittsburgh, PA. Dr. Polisetty’s primary area of focus is establishing an Antibiotic Stewardship program at her practice site. She works closely with the Infectious Diseases Department in the development of guidelines and protocols to promote appropriate prescribing of antimicrobials especially those pertaining to healthcare associated infections and sepsis. She serves as the Co-chair of the Antimicrobial Subcommittee and is actively involved in Northwestern Medicine's system wide Antimicrobial Stewardship Collaborative. Dr. Polisetty teaches infectious diseases pharmacotherapy at Midwestern University College of Pharmacy and is also involved in precepting pharmacy students as well as PGY2 Infectious Diseases residents. Her recent areas of research include impact of an Antibiotic Time-Out and strategies to reduce rates of Clostridium difficile associated diarrhea by optimizing antimicrobial use in a community setting. |
Delnor Hospital
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Jaime L. Borkowski, PharmD, BCPS
Infectious Diseases Clinical Specialist Northwestern Medicine Delnor Hospital Email: [email protected] Read Dr. Borkowski's Bio
Dr. Jaime Borkowski received a Doctor of Pharmacy degree in 2001 at Butler University in Indianapolis, IN, and completed a Pharmacy Practice Residency in 2002 at Northwestern Memorial Hospital in Chicago, IL. She is currently the lead Antimicrobial Stewardship Pharmacist at NM Delnor Hospital, where she has been working the past 10 years to develop the program. Dr. Borkowski also serves as a preceptor for clinical rotations for pharmacy students. Dr. Borkowski has presented multiple research posters in the area of antimicrobial stewardship at national meetings such as ICAAC and IDWeek, and is an active member of national organizations including ACCP, SIDP, and ICHP |
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Jay Liu, MD
Infectious Diseases Physician Northwestern Medicine Delnor Hospital Email: [email protected] |
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Richard Paguia, MD
Infectious Diseases Physician Northwestern Medicine Delnor Hospital Email: [email protected] |
Kishwaukee and Valley West Hospitals
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Kyle Johnicker, PharmD
Pharmacy Clinical Coordinator Northwestern Medicine Kishwaukee Hospital Email: [email protected] Read Dr. Johnicker's bio
Dr. Kyle Johnicker is the Pharmacy Clinical Coordinator at Northwestern Medicine Kishwaukee Hospital in DeKalb, Illinois. Dr. Johnicker earned his Doctor of Pharmacy degree from Butler University in Indianapolis, Indiana in 2006. After working for a few years in the Department of Pharmacology at the University of Colorado at Denver, he began his pharmacy career in 2009 as a Clinical Staff Pharmacist at Fayette Regional Health System in Connersville, Indiana. He moved on to become the Director of Pharmacy at Putnam County Hospital in Greencastle, Indiana in 2012. Following a relocation to Chicago in 2015, Dr. Johnicker assumed the role of Clinical Manager for the Pharmacy Department at South Shore Hospital. Including his current position, Dr. Johnicker has overseen the implementation and improvement of Antimicrobial Stewardship Programs at three different community hospital settings. Dr. Johnicker recognizes antimicrobial stewardship as an exciting area where pharmacy is poised to have a great impact on patient care. |
Marianjoy Rehabilitation Hospital
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Luis A. Manrique, MD
Infectious Diseases Physician, Antimicrobial Stewardship Medical Director Northwestern Medicine Central DuPage Hospital Northwestern Medicine Marianjoy Rehabilitation Hospital Email: [email protected] Read Dr. Manrique's bio
Dr. Luis A. Manrique, MD, completed his medical education at Universidad Peruana Cayetano Heredia in Lima, Peru. Followed by internship and residency training in internal medicine at John H Stroger Jr Hospital of Cook County, Chicago, Illinois and a fellowship in Infectious Disease at Rush University Medical Center. He practices as an Infectious Disease consultant at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, and he is the medical director of Antibiotic Stewardship and Infection Prevention at both Central DuPage Hospital and Marianjoy Rehabilitation Hospital. Dr. Manrique works with pharmacy in the development of guidelines and protocols to promote appropriate prescribing of antimicrobials in the hospital setting. |
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Jong (Jason) Park, PharmD, BCPS, BCCCP
Pharmacy clinical coordinator Northwestern Medicine – Delnor Hospital and Marianjoy Rehabilitation Hospital Read Dr. Park's Bio
Dr. Jong (Jason) Park is the Pharmacy Clinical Coordinator at Northwestern Medicine Marianjoy Hospital in Wheaton, Illinois and Delnor Hospital in Geneva, Illinois. He earned his Doctor of Pharmacy degree from University of Illinois – Chicago in 2006. After completion of PGY-1 residency from Hospital of University of Pennsylvania, he began his pharmacy career in 2007 as a Clinical staff pharmacist at UnityPoint Health – Trinity Rock Island at Rock Island, Illinois. He moved on to become the Critical Care Pharmacist at Northwestern Medicine - McHenry Hospital at McHenry, Illinois in 2014. He assumed the role of Pharmacy Clinical Coordinator for the Pharmacy department at both Marianjoy and Delnor Hospitals in 2023. He is excited to work with the system antimicrobial stewardship team and recognize that pharmacy has an important role in the stewardship effort to provide excellent patient care. |
Huntley, McHenry and Woodstock Hospitals
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Stephanie Chang, Pharm D
Clinical Pharmacy Specialist - Antimicrobial Stewardship/ID Northwestern Medicine Huntley Hospital Email: [email protected] Read Dr. Chang's Bio
Dr. Stephanie Y. Chang is an antimicrobial stewardship/infectious diseases clinical pharmacist at Northwestern Medicine Huntley Hospital. Dr. Chang earned a Bachelor of Science degree in chemistry from the University of Illinois at Urbana-Champaign in 2011 and a Doctor of Pharmacy degree from University of Illinois at Chicago in 2015. She went on to complete a PGY-1 pharmacy practice residency at Our Lady of the Lake Regional Medical Center in Baton Rouge, Louisiana and PGY-2 infectious diseases specialty residency at Dell Seton Medical Center at the University of Texas in Austin, Texas. Her work is focused in the area of antimicrobial stewardship and clinical interests include HIV, pharmacokinetics, pharmacodynamics and rapid diagnostic testing. |
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Irfan Hafiz, MD
Infectious Diseases Physician, Antimicrobial Stewardship Medical Director Senior Vice President and Chief Medical Officer Northwest Region Northwestern Medicine McHenry/Huntley/Woodstock Hospitals Email: [email protected] |
Palos Hospital
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Aaron Oliver, PharmD, BCPS
Antimicrobial Stewardship Clinical Pharmacist Palos Hospital Email: [email protected] |
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Andrea L. Quinn PharmD, BCPS
Clinical Coordinator, Pharmacy PGY1 Pharmacy Residency Program Director Email: [email protected] |
Ambulatory Care / Interprofessional community clinic
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Dharmesh Patel, MBA, CNMT, R.T.(N)(ARRT)
(he/him) Program Manager, Quality Northwestern Medical Group Northwestern Memorial Healthcare read dharmesh's bio
Dharmesh is the Clinical Quality Program Manager with Northwestern Medicine, focused on improving care in outpatient settings. The goal of the outpatient quality team is to facilitate safe, effective, patient-centered, timely, efficient, and equitable care. Dharmesh is driven by the principles of process improvement and adheres to a data-driven approach to solving issues in healthcare. Dharmesh has been part of the ambulatory antimicrobial stewardship committee at Northwestern Medicine since 2018 and has been facilitating outpatient committee and related activities. Dharmesh played an intricate role in developing and implementing interventions in the outpatient settings and, more importantly, sharing individual clinicians' prescribing data and comparing that to their peers. Dharmesh received his Master of Business Administration (MBA) degree from Ohio University in 2019, Bachelor of Science in 2015, and Nuclear Medicine Technology, Associate in Applied Science in 2008. Since graduating in 2008 and before his clinical quality role at Northwestern Medicine, Dharmesh has held radiology and healthcare informatics roles at acute care hospitals. With this career journey, Dharmesh is now a healthcare professional with more than 13 years of experience in the industry with excellent skills in complex project management, process improvement, informatics, quality and patient safety, and data analysis. Dharmesh is raising a young family with his wife in Skokie, IL. Dharmesh has two sons, aged six years and one year. |
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Katherine S. Ritter, MD
Northwestern Medical Group Immediate Care Read Dr. Ritter's Bio
Dr. Katherine Ritter is an urgent care physician at Northwestern Medicine's West Region Immediate Care department. She completed primary care residency at Adventist LaGrange Memorial Hospital in LaGrange, IL in 2015 and obtained her medical degree from Medical University of the Americas in Nevis, West Indies in 2011. Her interests include addressing the specific needs of antibiotic stewardship awareness in the urgent care setting and acting as the character Miss Penny Cillin in the West Region monthly meetings. |
