Current Fellows
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UCAOA congratulates the new Urgent Care Fellows on their recent admission into fellowships in Urgent Care Medicine. UCAOA is pleased to support these fellowships and their contribution to the field of urgent care with annual grants of $10,000 for each fellow.




Pomona Fellowship Program
Jonathan Toan Nguyen, DO

 Dr. Nguyen is a graduate of the University of Oregon with a BS in Biology. After working at Baylor College of Medicine on Cancer Research and completing a course of post-baccalaureate work at Texas Tech University, Dr. Nguyen want on to graduate from the Texas College of Osteopathic Medicine with his DO degree. After graduation, Dr. Nguyen did his residency in Family Medicine at The Wright Center - Family Medicine Regional Network. Dr. Nguyen looks forward to improving his urgent care knowledge and procedural skills. Dr. Nguyen personal interests include: History, travel, and finding a perfect plate of Dim Sum or bowl of Pho.



Rockford Fellowship Program

Linu Samuel, MD, MS 

Dr. Linu Samuel graduated with this medical degree from the American University of Antiqua College of Medicine, Antiqua, West Indies and completed his residency at Wayne State University. He successfully served as Chief Resident during his third year of residency training. Dr. Samuel is known for his communications skills and ability to build rapport with his patients. We a Master’s degree in Health Services Research, he looks forward to opening his own qualified urgent care facility. Dr. Samuel’s personal interests include: traveling, live music and searching for the perfect cup of coffee. 


Pamona Valley Fellowship Program

Monique Castro, MD 

Dr. Castro is a graduate of the California State University of Los Angeles with a BS in biology. She subsequently graduated from the University of Rochester School of Medicine and Dentistry with the MD degree. Her residency was in Family Medicine at Glendale Adventist Medical Center in Glendale, California. She is Board Certified in Family Medicine. She will be the first Fellow in the Pomona Valley Hospital UCC Fellowship program and is looking forward to being part of the program's development.



Alexander Nathanson, MD

University Hospitals Medical Practices /
Department of Family Medicine-University Hospitals Case Medical Center

Dr. Alexander Nathanson graduated from the Overlook Medical Center Family Residency program in 2014. He is a diplomate of the American Board of Family Medicine. Dr. Nathanson has expressed interest in urgent care early in his residency. His residency mentors believe the fast paced acute-care suits him too, having been observed to function extremely well and make good decisions under time-limited circumstances. Dr. Nathanson is a leader – he was Vice President of the Atlantic Health Residency Council and was also the residency representative of his program’s GO Diabetes Quality Improvement Initiative.


>>Learn more about Dr. Nathanson via the Graphic 



>> Past Urgent Care Fellows

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