Meet our team.

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Dr. Raj Singh

Board-certified Physician

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Board-certified physician Dr. Raj Singh is highly trained in the field of medicine and provides advanced care for men and women throughout Las Vegas.

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Thu-Hong Tran


Thu-Hong Tran is a physician assistant with professional experience in primary care, pain management, and weight management.

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Eriko Yutani Kern

Physician Assistant

Eriko Yutani Kern was born in Kyoto, Japan. There she earned a bachelor’s degree in Chemistry from Doshisha University in Kyoto. As a graduate student, she presented her research work to the Chemical Society of Japan, the Asian Cyclodextrin Conference, and the Society of Cyclodextrin, among others. Her research there into synthetic hemoglobin and myoglobin was published in the European Journal of Inorganic Chemistry.

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Anthony Brando Opimo


Anthony is a member of a number of professional organizations, including the American Nurses Association, the American Medical Society, the Oncology Nurses Society, the Nevada Advanced Practice Nurses Association, and the Association of Pediatric Hematology/Oncology Nurses.

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Mariela Castro

Office Manager

Mariela Castro serves as the office manager at HEALOR Primary Care in Las Vegas, NV. In this role, she is responsible for ensuring that the internal operations of our practice run smoothly, working with patients regarding their scheduling and billing, and lending her hand wherever it's needed.