Clinic Hours:
Swipe To Right
| Week Day | Provider | (*provider meeting) | Office Hours | Injection Hours |
|---|---|---|---|---|
| Monday | Yongxin Chen, MD | ALL | 8:30am – 4:30pm | Injections: 8:30am – 11:30am / 1:30pm – 6:15pm
Phone: 8:30am – 6:15pm |
| Jeannie Encarnacion, PA-C | ALL | 8:30am – 6:15pm | ||
| Tuesday | Jeannie Encarnacion, PA-C | AM | 8:30am – 11:30am | Injections: 8:30am – 11:30am / 1:30pm – 6:15pm
Phone: 8:30am – 6:15pm |
| Glenn Kline, MD | PM | 1:30pm – 6:15pm | ||
| Wednesday | Jeannie Encarnacion, PA-C | ALL | 8:30am – 4:30pm | Injections: 8:30am – 11:30am / 1:30pm – 4:30pm
Phone: 8:30am – 4:30pm |
| Thursday | Glenn Kline, MD | AM | 8:30am – 11:30am | Injections: 8:30am – 11:30am / 1:30pm – 6:15pm
Phone: 8:30am – 6:15pm |
| Yongxin Chen, MD | PM | 1:30pm – 6:15pm |
Meet Our Team
Our Mission
If you’ve been searching for a trusted allergist in Katy, TX, Southwest Asthma & Allergy Associates has been the answer for thousands of Katy and West Houston families for over 40 years. Our Katy clinic, located at 21820 Kingsland Blvd, Suite 110, sits right in the heart of the community — easily accessible whether you’re coming from Cinco Ranch, Fulshear, or the Energy Corridor. We specialize in allergy and immunology for both adults and children, meaning you don’t have to drive into Houston just to get expert care close to home.
Our Katy office provides comprehensive allergy testing, asthma treatment, and allergen immunotherapy (allergy shots) — all under one roof. If you or your child is dealing with seasonal allergies, food allergies, eczema, sinus issues, or recurring asthma flare-ups, our board-certified physicians build a treatment plan around your specific triggers, not a one-size-fits-all protocol. Katy sits in one of the highest pollen-count corridors in Texas, so getting properly tested and treated isn’t just a comfort issue — it’s a quality-of-life issue. Whether you need a skin prick test, spirometry for lung function, or a long-term sublingual or injection immunotherapy plan, we have the experience and the technology to get you there.
Why Choose Us
What Makes Us Different
Specialized Allergy & Asthma Care
Evidence-Based Treatment
Advanced Testing & Diagnostics
Asthma Management & Education
Allergy Relief Solutions
Compassionate, Patient-Centered Care
10 Clinics Across Houston
Best Doctors, Exceptional Care
Same-Day Appointments
Most Insurances Accepted
FAQs
Common Questions
Southwest Asthma & Allergy Associates is a top-rated, board-certified allergy and asthma clinic in Katy, TX, treating both children and adults. We offer allergy testing, asthma treatment, and immunotherapy with same-week appointments and most major insurance accepted.
You can get allergy testing at Southwest Asthma & Allergy Associates in Katy, TX. We provide skin and blood allergy testing for pollen, dust, mold, pet dander, and food allergies, usually with same-day results during your visit.
An allergist at Southwest Asthma & Allergy Associates in Katy treats seasonal allergies, asthma, chronic sinus infections, hives, eczema, food allergies, and insect sting allergies for all ages.
Most patients do not need a referral to see an allergist at our Katy clinic, though some insurance plans may require one. We verify your coverage before your appointment so there are no surprises.
Southwest Asthma & Allergy Associates offers same-week appointments at our Katy, TX location, with telehealth visits also available for follow-ups and consultations.
Quality Care On Your Terms
Insurance Plans Accepted
At Southwest Asthma & Allergy Associates, we believe that managing your allergies and asthma should never be complicated by financial concerns. We are proud to accept a wide range of insurance plans, including:
Patient Stories
What Our Patients Have To Say
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