Frequently Asked Questions

We provide video consultations using a HIPAA-compliant platform to ensure your privacy. If you live anywhere in California, we can see you via telehealth. This includes follow-up appointments, medication management, and initial evaluations for pulmonary and sleep concerns. Please note that insurance coverage for telehealth services is subject to current legal provisions and your plan's policies at the time of service.

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Yes. We evaluate your likelihood of obstructive sleep apnea, coordinate home sleep testing or in-lab polysomnography referrals, and develop personalized treatment plans. Treatment options include CPAP therapy with ongoing management, mandibular advancement devices (oral appliances), eXciteOSA daytime tongue neuromuscular stimulation for mild OSA and snoring, and positional therapy. Symptoms to watch for include loud snoring, witnessed breathing pauses, excessive daytime sleepiness, and morning headaches.

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We offer medical weight management services including GLP-1 and GIP receptor agonist medications such as Zepbound (tirzepatide), which is FDA-approved for moderate-to-severe obstructive sleep apnea in adults with obesity. These medications support substantial, sustained weight loss, which can significantly improve sleep apnea symptoms and reduce disease severity.

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Yes. Several injectable biologic medications have revolutionized asthma control for patients with severe or uncontrolled asthma. We evaluate your asthma type, determine eligibility, and can initiate and manage biologic therapy in our office. Many patients experience significant reductions in asthma attacks and improved quality of life.

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If you have persistent cough, shortness of breath, fluid on the lungs, or recent pneumonia, we will refer you for the appropriate imaging tests such as chest X-rays or CT scans. We coordinate with local imaging centers and review all results with you to determine next steps.

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Yes. We provide individualized smoking cessation counseling and can prescribe FDA-approved medications to help manage cravings and withdrawal symptoms. Research shows that patients who have regular check-ins with their physician are significantly more likely to quit successfully.

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Yes. Adults aged 50 to 80 with a 20 pack-year or greater smoking history who currently smoke or have quit within the past 15 years may qualify for low-dose CT lung cancer screening. We assess your eligibility, coordinate the screening, and review results with you.

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Bronchoscopy is a procedure that allows Dr. Hsieh to examine the airways and obtain tissue samples from the lungs using a thin, flexible scope. It is used to diagnose lung nodules, masses, infections, and other conditions. Dr. Hsieh is also trained in endobronchial ultrasound (EBUS) for sampling lymph nodes. All procedures are performed at affiliated hospitals.

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COPD (chronic obstructive pulmonary disease) is a chronic inflammatory lung disease that causes obstructed airflow from the lungs. Symptoms include breathing difficulty, cough, mucus production, and wheezing. It is most commonly caused by long-term exposure to cigarette smoke. Dr. Hsieh provides comprehensive COPD management including medication therapy, pulmonary rehabilitation referrals, and ongoing monitoring.

Common symptoms of obstructive sleep apnea (OSA) include loud snoring, episodes of stopped breathing during sleep witnessed by another person, abrupt awakenings with gasping or choking, morning headaches, excessive daytime sleepiness, difficulty concentrating, and irritability. If you experience these symptoms, a sleep evaluation can determine if you have sleep apnea.

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Asthma is diagnosed through a combination of medical history, physical examination, and lung function testing. Spirometry measures how much air you can exhale and how quickly. Additional tests may include bronchoprovocation testing, exhaled nitric oxide testing, and allergy testing. Dr. Hsieh can perform a thorough evaluation to determine if you have asthma and develop an appropriate treatment plan.

Pulmonary fibrosis is a condition in which the lung tissue becomes damaged and scarred, making it difficult for the lungs to work properly. Symptoms include shortness of breath, a dry cough, fatigue, and unexplained weight loss. The condition can be caused by environmental exposures, medications, autoimmune conditions, or may be idiopathic (unknown cause). Early diagnosis and management are important for slowing progression.

A lung nodule is a small growth in the lung that is typically found incidentally on a chest X-ray or CT scan. Most lung nodules are benign, but some may require monitoring or further evaluation to rule out lung cancer. Dr. Hsieh can review your imaging, assess your risk factors, and recommend appropriate follow-up, which may include repeat imaging, PET scan, or biopsy via bronchoscopy.

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Interstitial lung disease (ILD) refers to a group of more than 200 disorders that cause inflammation and scarring (fibrosis) of the lung tissue surrounding the air sacs (alveoli). This scarring makes the lung interstitium thick and stiff, impairing the lungs' ability to expand fully and transfer oxygen into the bloodstream. Common causes include environmental and occupational exposures (such as asbestos, dust, or mold), autoimmune and connective tissue diseases, certain medications, and infections including COVID-19. In many cases, the cause is unknown — the most common of these is idiopathic pulmonary fibrosis (IPF). Symptoms typically include progressive shortness of breath, a persistent dry cough, fatigue, and in some cases, finger clubbing. Early diagnosis through pulmonary function testing, high-resolution CT imaging, and sometimes lung biopsy is important for guiding treatment and slowing disease progression. Dr. Hsieh provides comprehensive evaluation and ongoing management of interstitial lung diseases.

We accept most major PPO insurances and Medicare PPO (including Medi-Medi). For HMO plans, we accept:

• MemorialCare
• Greater Newport Physicians
• Edinger Medical Group
• Monarch Healthcare
• Optum (HealthCare Partners)
• Regal Medical Group (Lakeside, ADOC)
• IN Physician Associates
• Orange County Advantage Medical Group
• Allied Pacific IPA

If you are unsure whether we accept your plan, please contact our office at (949) 424-6135.

Yes, we accept Medicare PPO plans, including Medi-Medi (dual eligible Medicare and Medi-Cal). Please bring your Medicare card and any supplemental insurance information to your appointment.

You can pay your bill securely online through our Pay Online page. You will need your name, date of birth, and invoice number (if available). We accept all major credit and debit cards through our Stripe-powered payment system.

You can request an appointment online by filling out our form with your personal, contact, and insurance information. Our team will contact you to verify your insurance and schedule your visit. You can also call us directly at (949) 424-6135.

Yes. We offer HIPAA-compliant video consultations for patients located anywhere in California. Telehealth visits are available for follow-ups, medication management, and initial evaluations. Learn more about our telehealth services.

Please bring the following to your first appointment:

• Photo ID (driver's license or passport)
• Insurance card(s)
• List of current medications and dosages
• Any relevant medical records, imaging reports, or lab results
• Referral from your primary care physician (if required by your insurance)

Our office is located at 17305 Von Karman Ave, Ste 201, Irvine, CA 92614. We recently relocated from 18255 Brookhurst St, Fountain Valley. We are conveniently located in Orange County and serve patients from Fountain Valley, Huntington Beach, Costa Mesa, Westminster, Garden Grove, Irvine, Newport Beach, and surrounding communities.

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Our office is open Monday through Friday, 9:00 AM to 5:00 PM. We are closed on weekends and major holidays. For urgent matters outside of office hours, please go to your nearest emergency room.