standard-title Our Providers Providing Compassionate Specialized Urologic Care

Our Providers

Providing Compassionate Specialized Urologic Care

Meet Our Providers


James A. Cunningham, MD

James A. Cunningham. MD joined Carson Urologists in 1995, and has been serving Northern Nevada for over twenty years. He was initially certified by the American Board of Urology in 1997, and has maintained active board certification, having most recently recertified in 2014.

Dr. Cunningham received his medical degree from Indiana University of Medicine in Indianapolis in 1989, graduating with honors (a member of Alpha Omega Alpha Honor Society). He completed a six year residency at University of Southern California Medical Center in 1995. His training included two years of general surgery followed by four years of urologic surgery.

Dr. Cunningham is involved in advancing the field of urology including multiple publications in urologic journals, and presenting papers at professional urological assemblies. He practices general urology with an emphasis on prostate cancer, bladder cancer, prostate enlargement (BPH), incontinence, stone disease and vasectomy.

James A. Cunningham CV


Roland N. Chen, MD

Dr. Chen joined Carson Urologists in June 2000. He specializes in minimally invasive surgery for the urinary tract and has performed thousands of laparoscopic and percutaneous procedures for kidney disease. His primary interest is in the treatment of kidney cancer and complex kidney stones. He is board certified by the American Board of Urology and is a Fellow of the American College of Surgeons.

Dr. Chen graduated Magna cum laude and Phi beta kappa from Amherst College. He received his medical degree from Temple University where he won the John Huber Anatomy Prize and the Urology Department Prize. He served his Urology residency at the Cleveland Clinic Foundation followed by a Fellowship in endourology and minimally invasive surgery at the James Buchanan Brady Urological Institute at Johns Hopkins University. He is coauthor of numerous publications in the field of his interest. He is also a reviewer for the Nevada Medical Board.

Dr. Chen has been married to his wife since 1990 and has 3 children. He is an avid skier and enjoys paddle boarding and kayaking on Lake Tahoe.

Roland N. Chen CV


Randall George Nixon, MD

Dr. Nixon received his medical degree from the University of Washington School Medicine in 1998. He performed his internship in General Surgery, and his residency in Urologic Surgery at Vanderbilt University Medical Center.  He is board certified by the American Board of Urology.

Dr. Nixon has published multiple journal articles on the pro’s and con’s of PSA testing, prostate cancer, and bladder cancer. He has also published work in pediatric urology. He has written review articles and a book chapter on refining the clinical usefulness of PSA testing. 

Dr. Nixon also did volunteer work at a rural clinic in Palacios, Honduras. He was born and raised in Montana. He now practices and is licensed in both Nevada and California, and joined Carson Urologists, Ltd. in 2003. 

Randall George Nixon CV



Michael Sheehan, RNFA, MSN, NPc, CUNP

Michael joined Carson Urologists, Ltd. as a part of our team in January of 2011 and has been an integral part of providing and improving our quality patient care. Michael graduated with a BSN from William Carey College on the coast of Mississippi in 1999. He went on to earn his RNFA in 2001 and his MSN in 2005. He is a nationally certified family Nurse Practitioner and a nationally certified Urology Nurse Practitioner.

Michael’s philosophy of care is grounded in the nursing model and he treats each patient through the lived experience of their health and aims to care for the whole individual.

There may be times where you will be treated by Michael instead of one of the Urologists – Dr. Cunningham, Dr. Chen, or Dr. Nixon.

Michael Sheehan CV

Julie Rowan, APRN, NP-C

In March 2017, Carson Urologists welcomed Julie Rowan, a Certified Nurse Practitioner, as a new member to our team.  

Julie received her BSN in 2001 from West Texas A&M University in Canyon, Texas. She worked in the operating room of a busy trauma hospital where she received additional training in the care of surgical patients. Julie then completed her Master Degree and Nurse Practitioner training in 2013.  Julie is Nationally Certified by the American Academy of Nurse Practitioners.  She most recently comes to us from Renown Medical in Silver Springs.

Julie strives to provide excellent care and enjoys working collaboratively to achieve optimum outcomes for each patient. She is happy to have joined this accomplished team!

There may be times where you will be treated by Julie instead of one of the Urologists – Dr. Cunningham, Dr. Chen, or Dr. Nixon.

Julie Rowan CV

You can make an appointment at the location of your choice by calling (800) 207-5004 or (775) 883-1030

Main Office | 1425 Vista Lane, Carson City, NV 89703 | Fax: (775) 884-6231

Minden Office

1677 Lucerne Drive, Ste A
Minden, NV 89423

Fallon Office

801 E. Williams Avenue
Fallon, NV 89406

Stateline Medical Center

155 Highway 50, Ste 203
Stateline, NV 89449

Yerington Office

213 Surprise Avenue
Yerington, NV 89447

Hawthorne Office

First and A Street
Hawthorne, NV 89415

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