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Current Renal Fellows


First-Year Fellows

Bourla-Michael-for-web.jpg 
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.


Cerasarao-Michael-for-web.jpgMichael Cerasaro, DO

Hometown: Endicott, NY
Medical School: Western University of Health Sciences
Residency: Community Memorial Hospital, Ventura CA
Research/Clinical Interests: General Nephrology, future renal replacement therapies
Hobbies: Being outside, cooking, reading, ice hockey, spending time with my fiancé and our menagerie of dogs and cats, exploring Colorado. 
Why did you choose the University of Colorado? The academic environment and reputation of the program.


Flood-Ryan-for-web.jpgRyan 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-Matthew-for-web.jpg Matthew 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, brewing beer, rock climbing, 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. 


Second-Year Fellows


Narisorn-for-web.jpgNarisorn 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, ImmunologyHobbies: 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!


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Denise Haivas, MD
Hometown: Chattanooga
Medical School: University of Medicine TimisoaraResidency: University of Tennessee
Research/Clinical Interests: AKI, electrolytes disorders
Hobbies: hiking, playing with my dogs
Why did you choose the University of Colorado? The reputation of the program.


NeilShah-for-web.jpgNeil Shah, MD
Hometown: Sarasota, FL
Medical School: University of Miami
Residency: University of Texas Southwestern 
Research/Clinical Interests: AKI, Acid/Base, and Fluids, Critical Care Nephrology
Hobbies: Staying active, both in and outdoors, playing tennis and basketball, dancing, world traveling, cooking, and most activities involving eating
Why did you choose the University of Colorado?: The people + Denver -- you cannot have much a better combination. It also helps to be trained by some of the most well-known nephrologists. 


RoshiniYapa-for-web.jpgRoshini 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


Adam Bregman, MD
Hometown:  Miami, FL
Medical School: University of Miami Miller School of Medicine
Residency:  Vanderbilt University Medical Center
Research/Clinical Interests:  Renal transplant, compliance in transplant evaluation in relation to outcomes
Hobbies: Twitter, hiking with my Bernese Mountain Dog
Why did you choose the Univ
ersity of Colorado? The strength of clinical training, high volume, multiple environments to practice (city hospital, university, VA), location, and reputation

T32 Fellows


Clayton-for-web.jpgZachary Clayton, PhD
Hometown:  Santa Maria, CA
Undergraduate: San Diego State University
Graduate School: San Diego State University/ University of Oregon
Research Interests: Molecular regulation of metabolism and vascular function in chronic disease and throughout the lifespan
Hobbies: Anything related to fitness, as well as playing with my golden retriever, Paisley
Why did you choose the University of Colorado? Both CU Boulder and Anschutz have a terrific research reputation and I knew it was something I wanted to be a part of. Specifically, I wanted to work in a laboratory that had a track record of not only studying novel ideas at the preclinical level but also translated those preclinical findings to impactful clinical trials. To have the opportunity to study topics I am interested in, in a gorgeous state like Colorado, it was an easy decision. 


Ben-Griffin-for-web.jpgBenjamin Griffin, MD
Hometown: Owatonna, MN
Medical School: University of Miami Miller School of Medicine
Residency: Mayo Rochester
Research/Clinical Interests: systemic effects of AKI, CRRT, critical illness
Hobbies:  Hiking, snowshoeing, NBA
Why did you choose the University of Colorado? The program is strong in so many areas, which provided flexibility when I wasn't sure what I wanted my career to be.  The faculty is wonderful, and Colorado is a fantastic place to live. 


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Swati Jain, PhD
Hometown: Gwalior (India)
Undergraduate: Banasthali Vidyapith (India)
Graduate School: Defence Research and Development Establishment (DRDE, India)
Research Interests: Delayed Graft Function, hibernation
Hobbies: Dancing, Reading
Why did you choose the University of Colorado?: My education has given me a solid foundation for a career in basic science. I wanted a role that will allow me to put the things I’ve learned into practice and develop my skills even further and I’m so glad I made the decision to join the University of Colorado. I know that this postdoctoral position is a good fit for me. My choice of Mentor, research project and training will give me an outstanding foundation to reach my goal of becoming an independent investigator in the field of transplant biology.


RoshiniYapa-for-web.jpgRoshini 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 University of Colorado: The quality of the program and great faculty, lifestyle in Colorado.