About United ENT

United ENT opened its doors in 2018 as a new specialty division of United Medical Doctors to serve the need for Otolaryngology and clinical audiology services in and around the Temecula Valley and has since expanded to La Jolla in San Diego. Our providers take great pride in delivering unparalleled ENT services to their community.

Our Mission

We are dedicated to providing unparalleled comprehensive, cutting-edge medical and surgical specialty care to pediatric and adult patients affected by ear, nose and throat (ENT) disorders. Our practice strives to demonstrate compassion while maintaining high reliability as we aim to fulfill a superior patient-centered experience. We thank you for the opportunity to be a part of your healthcare team.

We are proud to offer our patients unparalleled audiologic services, from comprehensive diagnostic hearing exams to custom hearing aids with the goal of improve their quality of life by ensuring healthy hearing. Our Clinical Audiologists work alongside our ENT Physicians in both locations.

Conditions Treated

  • Anklyoglossia (tongue tied)
  • Benign or malignant head & neck masses
  • Chronic cough & laryngeal reflux
  • Deviated septum
  • Facial & nasal fractures
  • Hearing loss: sensorineural or conductive & hearing aid evaluation
  • Hoarseness & vocal disorders
  • Nasal obstruction
  • Otitis media & externa
  • Recurrent & chronic sinusitis
  • Rhinitis (allergic & non-allergic)
  • Salivary gland disease
  • Speech conditions
  • Surgical management of snoring & obstructive sleep apnea (OSA)
  • Surgical management of thyroid & parathyroid
  • Temporal mandibular joint arthralgia (TMJ)
  • Tinnitus
  • Tracheostomy management

Audiology Services

Hearing & Balance

  • Pure-tone testing
  • Bone-conduction testing
  • Speech discrimination testing
  • Comprehensive middle-ear (acoustic immittance) testing
  • Otoacoustic emission testing
  • Canalith repositioning therapy for positional vertigo

Hearing Devices

  • Traditional hearing devices
  • Bluetooth assistive listening devices
  • Osseointegrated hearing devices (also known as bone-anchored hearing aid or baha)
  • Custom hearing protective and musician’s plugs
  • Custom swim and surfer’s plugs

Procedures & Surgeries

Our providers do in-office procedures as well as outpatient procedures and surgeries at our spacious and state-of-the-art facility, United Surgery Centers-Temecula (pictured here). Additionally, select procedures are performed within a hospital setting and our physicians have privileges at the surrounding hospitals.

Cutting-Edge ENT Therapies & Procedures

We are proud to offer cutting-edge and innovative therapies for a myriad of ENT disorders and conditions.

Inspire Therapy for OSA

No mask. No hose. Just sleep. Inspire is an FDA-approved therapy for patients with Obstructive Sleep Apnea (OSA) that have been unable to consistently use and receive relief with their CPAP device.

  • Inspire® therapy is an FDA-approved minimally invasive implanted device that delivers mild stimulation to keep a patient’s airway open during sleep.
  • Inspire therapy significantly reduces sleep apnea events by 78%
  • Snoring reduction in partner reported snoring by 80%
  • Indicated for patients:
    • AHI of 15-65
    • CPAP intolerant or unwilling to use
    • BMI < 35

*Inspire may be restricted from those patients who are significantly overweight.

VivAer for Lasting Relief For Your Stuffy Nose

If you regularly experience difficulty breathing through your nose and nothing seems to help, you may have nasal obstruction. Until now, finding a long-term solution often meant surgery. Now, our physicians may be able to offer you lasting relief without surgery by performing the VivAer® procedure to open your nasal airway.

  • 97% of patients experienced significant improvement in nasal breathing
  • Non-invasive, minimal discomfort, no incisions and can be performed in office
  • Clinically shown to significantly improve quality of life and provide long-lasting relief

VivAer Procedure Testimonial

Hear from a real VivAer patient, Mitch, on his journey with the VivAer procedure. After 12 years of suffering through very poor breathing and constantly using over-the-counter sprays, he was ready for an effective, lasting solution.

Our ENT Team

Our Locations


44605 Avenida De Missiones, Ste. 205, Temecula, CA 92592

Ph: (951) 404-0911 | Fax: (951) 234-8184

La Jolla

(San Diego ENT) 4150 Regents Park Row, Ste. 345, La Jolla, CA 92037

Ph: (858) 926-7010 | Fax: (858) 926-7011

What Our Patients Say

Even prior to my appointment, I was blown away by the care and service provided by San Diego ENT. Lake treated me with extraordinary care, and did it with ease. I was seen by Dr. Yopa and Dr. Reuther for my needs, both taking what felt like extra time with me to get to the bottom of my concerns. Professional and special communicators but also extremely gifted doctors, with a heart. Mel was able to connect all the dots amongst the staff and set the tone for my multiple needs visit, huge support. Can’t say enough about my experience. Results were secondary to the care and depth I was provided, and comfort/confidence in the findings was easily attained. You won’t find a better ENT team, anywhere.

Mark K.

Google Review
Dr. Leach is the most patient and kind doctor. He took my calls day and night after my surgery. I felt heard and he was always there to help and suggest ways to ease my pain after my nose deviation surgery.

Justine D.

Yelp Review
My mom is a new patient which she was referred to Dr. Leach by Loma Linda Hospital in Murrieta. Love his staff, and the treatment given to my mom in what has been a stressful time. If there was a higher recommendation than five stars, I would give it.


Google Review
After weeks of distressing healthcare interactions, Dr. Reuther restored my faith in care providers. She was thorough, compassionate, and well skilled in her craft. I appreciate you, Marsha. Many thanks to the rest of the team at San Diego ENT.

Justin B.

Google Review
Wonderful doctor, very kind. I got instant relief from an ear infection that I had suffered with for a month. Wish I had seen him sooner instead of multiple urgent care visits. Lesson learned. Front office, very kind and helpful. The office got me in immediately as well, I was very anxious because I could not hear through the affected ear. Dr. Leach will be my go to ENT and will recommend to friends.

Karen B.

Google Review
This was my first time to see an ENT and during Covid-19 it was concerning. This office in Temecula, CA was really nice, clean and using all safety precautions which made my visit care free! From the entrance front desk staff to the MA that took my vitals they were knowledgeable, kind and very helpful. Excellent staff. Matthew Leach, MD was the best. He took me through everything carefully. Explaining things in terms that gave me reassurance and his absolute kindness, patience and knowledge was incredible. Before I left he and his MA had the next steps ready and would follow up with other facilities and would get back to me. I’m so grateful my Internal Specialist referred me to Dr. Leach.


Google Review
Dr. Leach is a remarkable and kind MD. His office staff Kurt and Marion are efficient and professional. I refer many of my friends and patients to this group. 5 stars!

L. L.

Yelp Review
As a doctor I was really impressed with Dr. Reuther's bedside manner and her knowledge on the subject we were dealing with. Great simple advice! I will be referring my patients over to her as they need her expertise.

John A.

Yelp Review
Dr. Yopa has been extremely helpful and professional in providing the hearing aid solution I knew I needed. I found the whole process of finding a provider/doctor, selecting a device manufacturer, figuring out what device features I needed, and getting insurance coverage, was more complicated than expected. Dr. Yopa was the answer. She was thorough, caring, knowledgeable, works with many device manufacturers, is excellent at answering questions, and has a Doctor of Audiology degree. I am grateful I found Dr. Yopa rather than using one of the chain or retail type providers.

Brian S.

Yelp Review

Request an Appointment

To schedule an appointment, please call our office directly or request an appointment online through the button below.

Temecula – (951) 404-0911 | La Jolla – (858) 926-7010

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    ENT Patient Education & Post-Op Instructions

    Feel free to download the below PDFs, which outline patient instructions for post-operative care following ENT procedures and surgeries.

    Frequently Asked Questions

    What is an Ear, Nose & Throat (ENT) Doctor?

    An ENT (aka Otolaryngologist) is a surgeon specially trained in disorders of the ears, nose/sinuses, mouth/throat, and neck (including thyroid, parathyroid, lymph nodes of the neck).  There is often overlap between ENT and other specialties such as neurosurgery, dentistry, allergy, endocrinology, gastroenterology.

    What Insurances Do You Accept?

    We happily accept most major PPO insurances, Medicare, Tricare, TriValley Medical Group & IEHP at our Temecula Office. Please contact our La Jolla office to verify the insurances Dr. Marsha Reuther accepts.

    What Do I Need to Bring to My Appointments?

    Please bring a photo ID and proof of Insurance to every visit. Any medical records that you feel are relevant to your ENT visit may also be helpful.  This especially includes any imaging or scans (CT, MRI, Ultrasound) or any test or biopsy results.  United ENT can request these records after your visit, but having them available for your initial consult is very helpful. If you do not have these request please try to have the name and contact information of the institution or physician where they were completed.

    How Early Do I Need to Arrive For My Appointment?

    First time patients please arrive 30 minute prior to your scheduled appointment time to allow sufficient time to fill out new patient paperwork. Returning patients or follow up visits please arrive 15 minute prior to your scheduled appointment time.

    How Early Do I Need to Arrive For My Procedure?

    In-Office Procedures- If you are having a procedure completed in clinic with no general anesthesia, then please arrive 30 minutes prior to your appointment.

    Surgery Center Procedures- Please arrive one hour prior to your scheduled procedure time to complete the necessary pretreatment procedures.

    Hospital Procedures – The hospital will contact prior to your procedure with an exact time and location of arrival.  Usually you are required to arrive 1-2 hours before your procedure.

    What Do I Need to Do If I Am Scheduled For a Procedure?

    All procedures require that the patient not eat or drink 8 hours before the scheduled appointment. Additionally, all blood thinning medication must be stopped for 5-7 days prior to the procedure, and a driver is required to take the patient home afterwards. You may also need medical clearance by another doctor before your procedure.  Depending on your other medical conditions and age this may be done by your PCP, cardiologist, pulmonologist, or at a pre-surgery anesthesia clinic located in the hospital (PAT clinic).

    What Are Your Hours of Operation?

    We are open 8 am – 5 pm Monday – Friday and closed for lunch daily from 12-1 pm as well as all major holidays.

    What If I Have an After-Hours Urgent Question or Emergency?

    If you have been discharged from the hospital or surgery center and have a life threatening emergency then please dial 911 or go to your nearest hospital emergency room. Temecula ENT Patients, Temecula Valley Hospital, Rancho Springs Hospital and Inland Valley Medical center all have on-call ENT physicians 24/7.  They will be able to assist you in an emergency even if your specific ENT is unavailable. La Jolla ENT Patients, please contact San Diego ENT for additional information.

    What If I Have a Question Related to My Surgery?

    If you have questions related to your surgery, and it is during working hours, then call United Surgery Centers – Temecula at (951) 303-3718.  If it is after hours, then the call will be transferred to an answering service. Follow the prompts and the physician on call will address your concerns remotely.