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Preceptors and Resident Bios


Cherryl Peterson, Pharm.D., CPEL

Dr. Peterson, Director of Pharmacy. She holds a Bachelor of Arts in Chemistry from Bemidji State University and a Doctor of Pharmacy from Idaho State University. She completed ASHP Clinical Residency training at the University of Iowa Hospitals and Clinics. Additional training includes ASHP traineeships in Anticoagulation and Hyperlipidemia and participation in the ASHP Pharmacy Leadership Institute at Boston College School of Management. Dr. Peterson enjoys golfing, woodworking and home renovation projects.

Rhiannon Marselli, Pharm.D., BCCCP

Dr. Rhiannon Marselli is the Residency Program Director and Medication Safety Officer for Frederick Health Hospital. She completed her undergraduate course work at University of Connecticut before graduating with her Pharm.D. from Notre Dame of Maryland University School of Pharmacy in 2017. She completed her PGY-1 pharmacy practice residency at Meritus Medical Center. Dr. Marselli started her career at Frederick Health in 2018 as the Emergency Medicine Clinical Pharmacy Specialist. Dr. Marselli has also completed her teaching certification through Shenandoah University and has served as an adjunct lecturer to numerous multidisciplinary student programs. She is an active member in MSHP and ASHP. In her free time, Dr. Marselli enjoys travelling, biking, and baking.

Tommy Bushell, Pharm.D.

Dr. Bushell graduated from the University of Maryland School of Pharmacy in 2012 and completed two years of post-graduate training at Loma Linda University Medical Center specializing in Critical Care Pharmacy. Dr. Bushell served as the clinical pharmacy specialist in the surgical ICU and the PGY2 critical care residency program director at Loma Linda from 2016 until 2022. He now works as the clinical pharmacy manager here at Frederick Health after relocating back home to Maryland. His pharmacy passions include critical care medicine, academia, and mentoring pharmacy students and residents. When not at work, Dr. Bushell spends his free time with family and friends, playing basketball, and rediscovering everything that Maryland has to offer.

Adam Shimoda, Pharm.D.

Dr. Shimoda graduated from the University of Maryland School of Pharmacy in 2014. Dr. Shimoda assumed the Manager, Pharmacy Operations role for Frederick Health in November 2021. Prior to taking on this role Dr. Shimoda served as the Regional Director of Pharmacy Operations for a National provider of long-term care pharmacy services overseeing pharmaceutical care to 18,000 skilled nursing beds across 10 states. He strives to educate new and established pharmacists in LEAN principles and their impact on operational and clinical outcomes. Dr. Shimoda enjoys spending time with his two young children and a variety of outdoor activities.

Jennifer Dwyer, Pharm.D., BCPS

Dr. Dwyer is originally a New Englander, born and raised in the state of Connecticut. She earned her Bachelors of Science from the University of Bridgeport in May 2015 and then pursued her Doctorate of Pharmacy from the University of Saint Joseph School of Pharmacy in May 2018. She completed a PGY1 Pharmacy Residency at St. Vincent’s Medical Center in Bridgeport, CT in June 2019. Dr. Dwyer serves as the Internal Medicine Clinical Pharmacy specialist and precepts the Clinical Skills/Internal Medicine Rotation as well as co-precepts the longitudinal Drug Information Rotation. Besides being involved with the PGY1 Residency Program at Frederick Health Hospital, she also serves as an Advanced Pharmacy Practice Experience preceptor for Shenandoah University and the University of Maryland. Outside of work, Dr. Dwyer enjoys spending time outside, going on hikes or going to the beach during the summer. She also is an animal lover and enjoys the company of her cat named Kevin.

Jane-Hwa Huang, Pharm.D., BCPS

Dr. Huang is a Clinical Pharmacist providing services spanning the last 11 years to patients at Frederick Health Hospital. She precepts for Clinical Skills and Decentralized Pharmacist rotations. Dr. Huang received her Doctor of Pharmacy degree from the University of Florida and her BS in Pharmacy from the Massachusetts College of Pharmacy. Dr. Huang has received numerous awards. Among these awards was the prestigious International REAL AWARD for clinicians, presented to her on Capitol Hill in 2014. Dr. Huang continues to expand her knowledge of pharmacy and medicine by serving the needs of a diverse population by utilizing her extensive experience. Dr. Huang enjoys zumba, crafting, traveling and KenKen puzzles. Her professional interests include becoming an international preceptor, oncology, diabetes and teaching.

Mary Colson, Pharm.D., BCGP

Dr. Colson received a bachelor of arts in Biology from the University of Maryland Baltimore County (UMBC). In 2017 she graduated from the University Of Maryland School Of Pharmacy with a Doctorate in Pharmacy and went on to complete a PGY-1 Pharmacy Practice Residency at Frederick Health Hospital. Following residency, she was hired as a Clinical Pharmacy Specialist in Transitions of Care and remained in that role for the first 5 years of her career. In 2023, Dr. Colson took a new role as Frederick Health’s Pharmacogenomics pharmacist. Additionally, she holds a board certification as a Geriatric pharmacist. She, also, serves as student preceptor for both Shenandoah and the University Of Maryland schools of pharmacies as well as PGY-1 resident preceptor. For fun, Dr. Colson enjoys spending time with her family, running, and wreath making.

Lauren Marchone, Pharm.D., BCPS

Dr. Lauren Marchone is a clinical pharmacist at Frederick Health Hospital. She obtained her Doctorate of Pharmacy degree at University of Maryland School of Pharmacy in Baltimore, Maryland in 2008. Afterwards, she ventured into retail pharmacy briefly before switching to a clinical role at Frederick Health Hospital. She has been involved in several aspects of pharmacy at FHH including the anticoagulation clinic, decentralized pharmacist, ICU, NICU, and Emergency Department. Dr. Marchone took on the role of preceptor for the Anticoagulation Clinic longitudinal rotation for several years before returning her focus back to inpatient services. Currently she is a clinical pharmacist and precepts for Clinical Skills and Decentralized Pharmacist rotations. In her free time, she enjoys raising her busy family with three energetic boys.

Annie Shanton, Pharm.D., BCPS

Dr. Annie Shanton is a graduate of University of Maryland School of Pharmacy. Following graduation, she completed her post-graduate year 1 acute care residency at UC San Diego Health, during which time she earned her teaching certificate. Prior to joining Frederick Health Hospital, she worked full time as a clinical staff pharmacist at Scripps Mercy Hospital in San Diego, CA as well as Ascension Sacred Heart Hospital in Pensacola, Florida where she completed the SIDP Antimicrobial Stewardship Certificate Program for pharmacists. At Frederick Health Hospital, she is a clinical pharmacist and precepts for Clinical Skills and Decentralized Pharmacist rotations. Her interests include antimicrobial stewardship, internal medicine, and transitions of care.

Thomas Smoot, Pharm.D., BCPS

Dr. Tom Smoot received his Bachelors of Science in Chemistry from Mount St. Mary's University in 2007 and then obtained his Doctor of Pharmacy Degree from the University of Maryland in 2011. After graduation, he left Maryland for Michigan and completed his PGY1 and PGY2 residency in Critical Care at Henry Ford Hospital in Detroit, MI. After working in the ICU briefly, he began working as an Emergency Medicine Pharmacy Specialist At Henry Ford Hospital. After 3 years working in Emergency Medicine at Henry Ford Hospital, Tom moved back East and joined the team at Frederick Health Hospital as the ICU Clinical Specialist.

Sabrina Staas, Pharm.D.

Dr. Staas graduated from the University of Maryland Eastern Shore School of Pharmacy in 2020 and completed post-graduate training at Frederick Health Hospital with particular interest in critical care medicine. She has a passion for learning and utilizing her knowledge of pharmacotherapy to improve patient care. Dr. Staas enjoys traveling, tacos and time with family & friends.

Caitlin Sas, Pharm.D.

Dr. Caitlin Sas graduated with a Chemistry degree at Towson University in 2012 and her Doctorate in Pharmacy from University of Maryland in 2020. Completed PGY-1 training at Frederick Health Hospital. She is the pediatric/NICU pharmacy specialist and TPN preceptor. She also serves on the VTE harm task force. Dr. Sas has ASHP certification in pediatrics and is working on becoming a Board-Certified Pharmacotherapy Specialist. She is a big sweet tooth, and enjoys spending time with family and friends, reading, movies, going to amusement parks, and hiking.

Patricia (Patty) Grunwald, Pharm.D., BCPS, BCOP

Dr. Grunwald is the oncology pharmacy specialist for the James M. Stockman Cancer Institute and Frederick Health Hospital. Sher received her Bachelor of Science in Pharmacy from Butler University in Indianapolis, Indiana, and Doctor of Pharmacy/ residency from the University of Cincinnati in Cincinnati, Ohio. She then served as an oncology specialist at the University of Cincinnati before moving back to Maryland. Before joining the cancer institute, Dr. Grunwald served in leadership roles as clinical coordinator, clinical manager, and interim director. She is board certified in both pharmacotherapy and oncology. Dr. Grunwald has many years of experience teaching/precepting pharmacy and nursing students as well as pharmacy residents and is a Clinical Assistant Professor at the University of Maryland School of Pharmacy. Dr. Grunwald serves as the preceptor for the oncology rotation for both residents and pharmacy students. In her other life she is a musician, avid knitter/sewist/embroiderer, and dabbles in living history.

Nadia Adjin-Tettey, Pharm.D.

Dr. Adjin-Tettey obtained her Doctorate of Pharmacy degree from the University Of Maryland School of Pharmacy in Baltimore, Maryland. She went on to complete her post-graduate training (PGY-1) at Frederick Health Hospital. After completing her residency, she was hired on with Frederick Health as a Clinical Pharmacist and was later promoted to being a Clinical Pharmacy Specialist in Pharmacy Informatics. Her goal is to eventually become a board-certified Pharmacotherapy Specialist as well as CPHIMS certified soon. In her free time, Dr. Adjin-Tettey enjoys spending time with her family, baking and traveling.

Benjamin Miller, Pharm.D.

Dr. Benjamin Miller grew up in Portersville, Pennsylvania, and graduated from Pensacola Christian College in 2018 with a Bachelor’s Degree in Natural Sciences with a Pre-Pharmacy Emphasis. He continued with post-graduate education at Western New England University where he was involved in several organizations including Phi Delta Chi and Phi Lambda Sigma. Dr. Miller earned his Doctor of Pharmacy in May 2022, and subsequently completed a PGY-1 pharmacy residency at Frederick Health Hospital. He remains interested in critical care, emergency medicine, and infectious diseases. He currently operates as a co-chair of the Antimicrobial Stewardship Committee and serves as an Antimicrobial Stewardship Pharmacist at Frederick Health Hospital. He is a dedicated fan of the Pittsburgh Penguins and the Boston Red Sox, and greatly enjoys spending time with his wife, Rose, and two cats named Hamster and Sly.


Namratha Ravindra, Pharm.D.

Namratha Ravindra graduated with a bachelor’s in biomedical sciences from the University of South Florida in 2019, and completed her doctorate of pharmacy at the University of Florida in 2023. Her current interests include pediatrics and informatics. In her free time, she enjoys spending time with friends and family, reading, exploring new cafes, and traveling.

Zourayz Kamran, Pharm.D.

Zourayz Kamran is a PGY-1 pharmacy resident enthusiastic about starting residency. He is passionate about elevating patient care through clinical excellence and innovation. He earned a B.S. in Biology from the University of Maryland, Baltimore County, which ignited his fascination with the dynamic intersection of science and healthcare. His journey continued at the University of Charleston School of Pharmacy, where he obtained his Doctor of Pharmacy degree. His professional interests include infectious disease, informatics, and oncology. The intricate nature of infectious disease management, the potential of informatics in healthcare decision-making, and the evolving landscape of oncology treatments captivates his focus. Beyond pharmacy, he indulges in playing golf, tennis, and spending time with family, which enriches his outlook and recharges his energy for patient interactions. As a pharmacy resident, he is dedicated to gaining knowledge and practical experience. Feel free to