Current Renal Fellows

First-Year Fellows 


Gower, ArianArian Gower​ 

Hometown: Oakland, California 

Medical School: Rosalind Franklin University 

Residency:  MountainView Hospital - Sunrise Health 

Research/Clinical Interests: Critical Care and Electrolytes  

Hobbies: Basketball. Bowling. Breweries. Ballin' on a Budget. 

Why did you choose the University of Colorado?  There is a deliberate effort to embrace training without an expectation to provide a service on behalf of the hospital - a line that too often gets blurred and sometimes ignored in Graduate Medical Education.  This cultural approach was important to me and the Nephrology program at University of Colorado appears committed to maintaining and ensuring that distinction.  Also, the view of the mountains from my balcony each morning is incredible.



Lai, Derian

Derian Lai 

Hometown:  Plano, Texas 

Medical School:  Baylor College of Medicine 

Residency:  Baylor College of Medicine 

Research/Clinical Interests: General nephrology 

Hobbies:  Weightlifting, hiking, rock climbing, Brazilian jiu-jitsu 

Why did you choose the University of Colorado?   ​​Great work-life balance. The faculty is very committed to teaching. Innovative curriculum. Denver is a great city to be.​ 



Lile, KristenKristen Lile 

Hometown: Farmerville, Louisiana  

Medical School:  William Carey University College of Osteopathic Medicine 

Residency:  Unity Health (Searcy, AR) 

Research/Clinical Interests: electrolyte disorders, glomerular disease, hemodialysis  

Hobbies:  My husband and I love being outside, including anything from downhill skiing to walking our fur baby. I also love to cook (and eat), run, and explore all of the great things that Denver has to offer!  

Why did you choose the University of Colorado?   ​​I was blown away by the prestigious and well-rounded education that this program offers. We also have an unbeatable faculty and staff who support us and help us become the best physicians possible. 


Venkataraman, Sandheep


Sandheep Venkataraman 

Hometown: New Delhi, India 

Medical School:  Madras Medical College  

Residency:  Montefiore Medical Center, Bronx 

Research/Clinical Interests: Glomerulonephritis, Critical care nephrology, renal replacement therapies​ 

Hobbies: Playing chess, cooking + eating, listening to music, reading, traveling  

Why did you choose the University of Colorado?  The supportive faculty, quality of training, the emphasis laid on work-life balance, exposure to all there is to learn in nephrology. I am also excited to experience the charm of living in a city that is surrounded by mountains.


 Second-Year Fellows


Bourla, Michael

Michael Bourla, MD 

Hometown: Roslyn Heights 

Medical School: Albert Einstein College of Medicine 

Residency:  Tulane 

Research/Clinical Interests::  General Nephrology 

Hobbies:  Playing piano, hiking, watching the Yankees and crying when they lose 

Why did you choose the University of Colorado?  The reputation of the program, supportive faculty, caring about the fellow' well-being and education.



Flood, Ryan

Ryan Flood, DO 

Hometown: Des Moines, Iowa Medical

School: Des Moines

University Residency: University of Iowa- Des Moines Research/Clinical

Interests: Diabetic kidney disease, Acute Glomerulonephritis, Nephrotic syndrome, Acid-base disorders, ICU nephrology

Hobbies: Travel, hiking, fly fishing, bike riding, cooking, and Chicago Cubs Baseball.

Why did you choose the University of Colorado? I was extremely impressed during my fellowship search and interview with the strength of the clinical, research, and educational programs the University of Colorado had to offer.  The faculty and fellows I met are what convinced me the University of Colorado would be the best fit to continue my education.  All members of the division are friendly, open, and dedicated to clinical education.  The training I am receiving is truly first-rate, and will prepare me to achieve my future career aspirations.  Denver and Colorado as a whole is an amazing place to live and work. You have access to all the amenities of a large city: major airport, public transport, incredible food scene, cultural attractions, sports teams, and diverse neighborhoods. That being said, at any time you can head out to the mountains on a day trip to get away and enjoy the beautiful weather.



Ray, MatthewMatthew Ray, DO 

Hometown: Idaho Falls, ID/Charlotte, NC

Medical School: Lake Erie College of Osteopathic

Med Residency: Spokane, WA Research/Clinical

Interests: AKI, physiology, the intersection of ethics and medicine, critical care

Hobbies: Biking, hiking, skiing, sailing, rock climbing, and working on my house

Why did you choose the University of Colorado? The faculty are incredibly supportive, the people are very friendly, the campus is incredible, and the myriad of options for study. 



Yapa, RoshiniRoshini Yapa, MD 

Hometown: Colombo Sri Lanka

Medical school: University of Sri Lanka, Colombo

Residency: University of Washington Boise Research/Clinical

Interests: Transplant Nephrology

Hobbies: listening to music, hiking, biking, reading

Why did you choose the University of Colorado?: The quality of the program and great faculty, lifestyle in Colorado.


Transplant Fellows


Atsava-Svate, NarisornNarisorn Atsava-Svate, MD

Hometown: Bangkok

Medical School: Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand

Residency: Chulalongkorn University Thailand (Internal Medicine 2011-2014); Texas Tech University Health Sciences Center (Lubbock) (Internal Medicine 2014-2017)

Research/Clinical Interests: kidney transplantation, Immunology

Hobbies: travel, hiking

Why did you choose the University of Colorado? I chose University of Colorado Nephrology because it is one of the best programs (many faculty members, strong academic program with history of 3 years training curriculum, available transplantation center, UCH is ranked by US News as 11th best Adult Nephrology hospital and 15th 2017-2018 Best Hospitals Honor roll )  On top of that there are so many things that Colorado has to offer from well-balanced urban life and breath-taking beautiful nature, endless outdoor activities, craft beers, and very friendly and open-minded Coloradans!