Welcoming New Patients

Dr. Bunrith Koy is board-certified in family medicine. He received his medical doctorate degree from the University of North Texas Health Science Center and completed his residency in family medicine with the Houston Methodist Hospital. He is a resident of Katy and proud to be practicing in his community. Currently, Dr. Koy is accepting new patients. 

Family Medicine

Preventative Medicine

Chronic Conditions


Minor Procedures 

Physicals / DOT


Open 7 Days A Week

Monday to Sunday: 9AM-7PM

Walk-ins are welcome or click here to check-in online. 

Dr. Koy is a Primary Care Provider (PCP) 

with Cigna and UnitedHealthCare.

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Bunrith Koy, D.O. 

Board Certified, ABFM


InstaHealth is committed to providing excellent patient care for children & adults.


Board-certified Doctors Always on Duty 

On-site X-rays and labs. 

No Wait Times

Walk-Ins Welcome 

Most Insurances Accepted

No Insurance? Only $85/Visit

23659 Katy Freeway Ste. 500 
Katy, TX 77494

By Costco and next to First Watch

Phone: 713-999-0008 
Fax: 713-338-2068 

Email: info@instahealthuc.com

Open Every Day

Monday to Sunday 9:00AM-7:00PM

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Family Medicine

Blood Pressure



Gastrointestinal Illnesses 

Colds / Flu 

Ear, Nose & Throat 

Skin Ailments 

UTI / HIV / STD Testing

PrEP Management 

Anxiety / Depression 


TB Testing, EKG, IV's

Tetanus & Flu Vaccines 

On-site Labs & X-rays 


Camp / School / Sports Physicals 

DOT Physicals / Drug Screening