Current Renal Fellows

First-Year Fellows 

Cameron CharlowCameron Charlow

Hometown: Los Angeles, California

Medical School:  Alabama College of Osteopathic Medicine

Residency: University of Nevada Las Vegas

Research/Clinical Interests:  Vascular Access, Renal Replacement Therapies,  Diet Related Effects on CKD, CKD in African Americans

Hobbies: I am a huge Star Wars fan. I am also a big sports fan, watching and playing. Trying new foods, music, exploring new places and languages.

Why did you choose the University of Colorado? I chose the University of Colorado because they have a rich history of contribution to the world of nephrology with excellent training.  They have the flexibility to guide training toward your interest. It's located in a great city that has a multitude of activities.  The fellows were the happiest groups of fellows I interviewed with.

Angela DixonAngelina Dixon

Hometown: Pittsburgh, PA

Medical School: Pennsylvania State University College of Medicine

Residency: Tulane University Internal Medicine-Pediatrics

Research/Clinical Interests: Transitions of Care, Nephrology Medical Education, Quality of Life for ESRD Patients

Hobbies: Singing, writing/arranging music, working on my latest Pinterest fail, hiking, biking, skiing, and doing whatever it takes to tire out my Australian Shepherd, Oaklie

Why I chose Colorado: The program is very fellow-centric! I felt that I would get a great education and incredible mentorship and would be supported in my individual career goals, whatever those may be.

Amy LiAmy Li

Hometown: Honolulu, Hawaii


Medical School: University of Hawaii John A. Burns School of Medicine


Residency: University of Colorado


Research/Clinical Interests: I love electrolytes (especially hyponatremia), acid/base, AKI, CKD, and dialysis so... All of it! I'm also particularly interested in basic science research.


Hobbies: wildlife/bird photography, cooking, traveling, and kitty cats - I have three cats with more room to love (in my heart but not at home). Also, I am an avid not-skier, not-snowboarder, and I don't follow sports! 


Why did you choose the University of Colorado?

The faculty, no doubt! The faculty is full of supportive, kind-hearted people. I met the renal faculty as early as when I interviewed for residency, and they have supported me throughout the years without fail. They are so approachable and engaging and truly have the best interests of the learners at heart (medical students, residents, and fellows alike). Also, we're so lucky to rotate through three different hospitals - an academic hospital (UCH), our county and safety-net hospital (Denver Health), and the VA. What's not to love about CU?

Nervik RoyNervik Roy

Hometown: Born in Madison Heights, MI, but more recently Las Vegas, NV!


Medical School: Touro University Nevada


Residency: Valley Hospital, Las Vegas


Research/Clinical Interests: GNs, AKI, Acid/Base disturbances, Renal Cancer, and Interventional Nephrology


Hobbies: Lifting weights, eating out and trying new restaurants, relaxing on a beach while sipping a Piña Colada. 


Why did you choose the University of Colorado? Great program with phenomenal attendings and staff, and the fellows seem happy and want to be here!

Jack RusingJack Rusing

Hometown:  Prescott, Arizona

Medical School:  University of Arizona School of Medicine

Residency:  Creighton University School of Medicine (Phoenix) Program

Research/Clinical Interests: Glomerulonephritis, Peritoneal Dialysis, Artificial Kidney, Electrolyte Disturbances

Hobbies: Hiking, Running, Traveling, Mountain Biking, Skiing

Why did you choose the University of Colorado?  I choose the University of Colorado because it is one of the top nephrology fellowships in the U.S. with its renowned faculty, diverse clinical practice settings, and beautiful location. During my interview, I sensed the comradery between the fellows and their satisfaction with their training. 

Second-Year Fellows 

Natalie Beck​, MDBeck, Natalie MD

Hometown:  Oregon City, OR

Medical School:  Oregon Health & Sciences University

Residency:  University of Colorado Internal Medicine Residency

Research/Clinical Interests:  I am interested in medical education as well as clinical research (though currently undifferentiated)

Hobbies:  I enjoy hiking/backpacking, going on road trips to visit National Parks with my boyfriend, snowshoeing, gardening, cooking dinner for friends, baking, and visiting some of the many breweries in the Denver area. 

Why did you choose the University of Colorado?  As a resident here I went through a renal elective and was very impressed with the education I received both from fellows/faculty and the educational conferences offered for the fellows. I felt that the variety of patients in each hospital we rotate through would allow me to be exposed to everything.  Denver has also been a great city in which to live with many opportunities for my outdoor hobbies.

Ruth Campbell, DOCampbell, Ruth DO

Hometown: Colorado Springs, CO

Medical School: Rocky Vista University CO

Residency:  MercyOne Medical Center, Des Moines

Research/Clinical Interests:  Everything! But specifically, I’m interested in glomerulonephritis and AKI. I enjoy teaching and working with medical students and residents. 

Hobbies:  I like rock climbing, hiking, and skiing with my husband Matt and our pup, Frisbee. And eating tacos afterwards.

Why did you choose the University of Colorado?  The University of Colorado was number one on my list because it is a top-ranked program with excellent faculty who are committed to both education and research. Plus, the fellows are incredibly supportive of each other.

Shrey Purohit, MDPurohit, Shrey

Hometown:  Los Angeles, CA

Medical School: University of Michigan Medical School

Residency:  Duke University

Research/Clinical Interests:  Long term outcomes for CKD in younger populations, inherited kidney diseases, immunology

Hobbies:  reading, cooking, building computers

Why did you choose the University of Colorado? The University of Colorado provided me with the opportunity to create my own clinical pathway and explore my research interests. The faculty is extremely collegial and strongly invested in their fellows. Denver is also a great city to explore and has something for everyone!

Katherine Rizzolo​, MDRizzolo, Katherine MD

Hometown:  Franklin, MA

Medical School:  Tufts University - Boston, MA

Residency:   Maine Medical Center - Portland, ME

Research/Clinical Interests:   Immigrant health/access to dialysis for undocumented immigrants, healthcare disparities in nephrology, resident/trainee wellness

Hobbies:  Long-distance running, skiing, knitting, international travel, yoga, craft beer, gummy bears

Why did you choose the University of Colorado?  Fantastic research on and advocacy for, health inequalities and social justice.  Promotion of fellow wellness within the program.

Tritia Schostak, DOSchostak, Tritia  DO

Hometown: Lake Forest, California

Medical School:  Touro University Nevada

Residency:  MountainView Hospital - Sunrise Health

Research/Clinical Interests:  Electrolyte disorders, renal replacement therapies

Hobbies:  Plants (despite not having the greenest thumb), tennis, basketball, eating, exploring new places

Why did you choose the University of Colorado? Quality of training, supportive faculty and their focus on fellows’ well-being as well as the amazing location.


Transplant Fellows


Monita PoudyalMonita Poudyal

Hometown: Denver, CO

Medical School: University of Texas Southwestern at Dallas Medical School

Residency: Yale University School of Medicine

Research/Clinical Interests: transplantation in the older population: immunological and societal implications

Hobbies:  stand up paddle boarding, international travel

Why did you choose the University of Colorado? The University of Colorado offers a large academic environment with dedication to excellent teaching. The center draws cases from multiple different states, providing exposure to a vast population with fascinating and instructive clinical conditions.