Our Team

Your Caring, Experienced Urology Team

Our greatest satisfaction comes from caring for our patients. As an Orange County Urology patient, you can expect the highest level of expertise and continuity of care. You can expect that our years of experience have given us unique skills, which we offer you in a compassionate, comfortable, clean and safe environment.

OCUA urology surgeons have received extensive medical and urology training and are board-certified. We believe that high-quality care can only be provided when all members of the healthcare team are communicating effectively with each other. Patients trust our urology doctors and staff for their decades of combined urological diagnosis and treatment experience.

Don T. Bui, M.D.

Medical School: Northeast Ohio Medical University, Rootstown, OH
Boarded in Urology: American Board of Urology
Office Locations: Huntington Beach

Tammy S. Ho, M.D.

Undergraduate: Duke University, Durham, NC
Medical School: Duke University School of Medicine, Durham, NC
Office Locations: Huntington Beach

Moses Kim, M.D., Ph.D.

College: University of California, Berkeley
Medical School: University of California, San Francisco
Office Locations: Laguna Hills, Irvine

James P. Meaglia, M.D.

Medical School: Chicago Medical School, North Chicago, IL
Board-Certified: American Board of Urology
Office Locations: Mission Viejo

Leah Y. Nakamura, M.D.

Boarded in Urology: American Board of Uruology
Fellowship: Female Pelvic Medicine and Reconstructive Surgery, UCLA
Office Locations: Huntington Beach

Josh M. Randall, M.D.

Medical School: New York Medical College, Valhalla, NY
Board-Certified: American Board of Urology
Office Locations: Mission Viejo, Laguna Hills

Poone Shoureshi, M.D.

Undergraduate: University of Southern California, Los Angeles, CA
Medical School: George Washington University School of Medicine, Washington, DC
Office Locations: Laguna Hills, Irvine, Huntington Beach, Mission Viejo

Karan J. Singh, M.D.

Medical School: UCLA School of Medicine, Los Angeles, CA
Board-Certified: Adult & Pediatric Urology, American Board of Urology
Office Locations: Mission Viejo

Aaron Spitz, M.D.

Medical School: Cornell University Medical College, New York, NY
Board-Certified: American Board of Urology
Office Locations: Laguna Hills, Irvine

Daniel Su, M.D.

Medical School: Rutgers Medical School, New Brunswick, NJ
Board-Certified: American Board of Urology
Office Locations: Laguna Hills, Irvine, Huntington Beach

Neyssan Tebyani, M.D.

Medical School: University of California at Los Angeles (UCLA), Los Angeles, CA
Board-Certified: American Board of Urology
Office Locations: Laguna Hills, Irvine, Mission Viejo

Michael Bui, N.P.

Graduate School: University of Southern California
Board Certified: American Academy of Nurse Practitioners Certification Board
Office Locations: Huntington Beach

Daniel Cabanero, P.A.

Graduate School: University of the Pacific
Board Certified: National Commission of Certification of Physician Assistants
Office Locations: Laguna Hills

Olivia Carr, P.A.

Graduate School: Cornell University
Board Certified: National Commission on Certification of Physician Assistants
Office Locations: Mission Viejo, Irvine

Jennifer Kim, P.A.

Graduate School: Marshall B Ketchum University
Board Certified: National Commission of Certification of Physician Assistants
Office Locations: Laguna Hills, Irvine

Ashley Swanson, N.P.

Graduate School: West Coast University
Board Certified: American Nurses Credentialing Center
Office Locations: Huntington Beach

We serve the communities of Laguna Hills, Irvine, Mission Viejo, Santa Ana, Anaheim, Costa Mesa, Lake Forest, Newport Beach, Huntington Beach, Laguna Beach, Laguna Niguel, Dana Point, and San Clemente. Discover today’s most advanced, effective urology care. Trust Orange County Urology Associates for real solutions. Call us at 949.855.1101 or use our convenient online Request an Appointment form to schedule your consultation with one of our urologists.

Conditions

Bladder Cancer

ED & Impotence

Kidney Stones

Kidney Cancer

Kidney Disorders

Male Infertility

Prostate Cancer

Prostate Enlargement / BPH

Urinary Incontinence

Urinary Tract Infection

Testimonials

“The office, staff and doctors are absolutely wonderful. They are very caring. The staff makes you feel very comfortable and they are very helpful. Dr. Spitz is a great doctor. It’s a great group.”

“Not only was O.C. Urology professional, they went out of their way to make sure I had a good reaction when taking care of my problem. They gave great care and followed up when necessary.”

“This is my first visit to this office. The staff and employees are friendly and accommodating. My first visit I felt so relaxed, because of the friendly environment. Dr. Tebyani was so friendly and honest. He would advise patients on only what is necessary. He is more after the well-being of the patient instead of their wallet. I would definitely recommend this office to anyone who needs medical help. Thanks.”

Dr. Moses Kim, MD, Ph.D., Chief Executive Officer of OCUA, explains how he now performs prostate removal with one incision instead of 5 or 6.

In The News

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IN THE OPERATING ROOM -- In this video, watch Dr. Moses Kim, MD, Ph.D. (OCUA Urologist-Urologic Oncologist) as he performs a robotic single-port radical prostatectomy (prostate removal through one small incision) using a da Vinci® robot made by Intuitive Surgical.
— Video made intraoperatively by Dr. Moses Kim

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23961 Calle de la Magdalena, Suite 500, Laguna Hills, CA 92653

Call or Text Us: 949-855-1101 | Fax: 949-855-8710

Orange County Urology Associates (OCUA) delivers comprehensive urology care throughout Orange County with locations in Laguna Hills, Irvine, Mission Viejo, Santa Ana, Anaheim, Costa Mesa, Lake Forest, Huntington Beach, Laguna Beach, Laguna Niguel and Dana Point. We also have patients from Los Angeles, San Diego, and from outside the U.S. We focus on comprehensive urological care for both men and women involving Urinary incontinence/leakage (men, women, teens, children), urinary tract infections (UTIs), enlarged prostate / benign prostatic hyperplasia (BPH), erectile dysfunction (ED) / impotence, prostate cancer, bladder cancer, kidney cancer, kidney disorders, kidney stones, sacral nerve stimulation, male infertility, sperm mapping, male restoration, curved penis, vasectomy (no-needle and no-scalpel) and vasectomy reversal.