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Allergy & Asthma Clinic in Cinco Ranch, TX

Our allergy and asthma clinic serving Cinco Ranch, TX provides comprehensive, board-certified care for families and adults throughout the Katy area, including Cinco Ranch, Seven Meadows, Cross Creek Ranch, Firethorne, Cane Island, Grand Lakes, and the surrounding 77450, 77494, 77441, and 77493 ZIP codes. As one of the fastest-growing master-planned communities in the country, Cinco Ranch combines mature landscaping, manicured greenbelts, and large open prairies — an environment that produces a uniquely heavy mix of tree, grass, and weed pollen, plus persistent Houston-area mold and dust mite exposure. Our specialists help you identify your exact triggers and build a treatment plan that actually solves the problem.
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Clinic Hours:

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Week Day Office Hours Injection Hours
Monday Office Hours8:30am – 6:15pm Injection HoursMorning: 8:30am – 11:30am
Afternoon: 1:30pm – 6:15pm
Tuesday Office Hours8:30am – 4:30pm Injection HoursMorning: 8:30am – 11:30am
Afternoon: 1:30pm – 4:30pm
Wednesday Office Hours8:30am – 4:30pm Injection HoursMorning: 8:30am – 11:30am
Afternoon: 1:30pm – 4:30pm
Thursday Office Hours8:30am – 6:15pm Injection HoursMorning: 8:30am – 11:30am
Afternoon: 1:30pm – 6:15pm
Week Day Provider (*provider meeting) Office Hours Injection Hours
Monday Glenn Kline, MD AM 8:30am – 6:15pm Injections: 8:30am – 11:30am / 1:30pm – 6:15pm
Phone: 8:30am – 6:15pm
Meng Chen, MD PM
Tuesday Glenn Kline, MD AM 8:30am – 4:30pm Injections: 8:30am – 11:30am / 1:30pm – 4:30pm
Phone: 8:30am – 4:30pm
Jeannie Encarnacion, PA-C PM
Wednesday John Kelley, MD AM 8:30am – 4:30pm Injections: 8:30am – 11:30am / 1:30pm – 4:30pm
Phone: 8:30am – 4:30pm
Yongxin Chen, MD PM
Thursday Yongxin Chen, MD AM 8:30am – 6:15pm Injections: 8:30am – 11:30am / 1:30pm – 6:15pm
Phone: 8:30am – 6:15pm
Glenn Kline, MD PM

Meet Our Team

Our experienced allergy and asthma specialists at Fulshear/Cinco Ranch.
Dr. Juan C. Zambrano, MD, FAAAAI, FACAAI

Dr. Juan C. Zambrano, MD, FAAAAI, FACAAI

Our Mission

We offer the full spectrum of allergy testing: environmental skin prick testing, food allergy testing with supervised oral food challenges, drug allergy testing including penicillin de-labeling, venom testing for severe stinging-insect reactions, and patch testing for contact dermatitis. Most testing is completed in one visit, with results reviewed and explained the same day. For long-term, disease-modifying relief, we provide customized allergen immunotherapy — both traditional allergy shots (subcutaneous immunotherapy) and sublingual options — targeting the specific oaks, elms, ashes, Bermuda and Bahia grasses, ragweed, pigweed, and molds that dominate Cinco Ranch and West Houston allergen profiles.

Asthma care is a cornerstone of our practice for Katy ISD families. The combination of humidity, high pollen, ozone, and dust from the still-developing edges of the Cinco Ranch and Cross Creek Ranch corridors makes uncontrolled asthma a real problem — especially for student-athletes in football, soccer, cross country, and cheer. We use objective in-office testing (spirometry, FeNO, bronchodilator response) to confirm asthma and choose the right controller therapy rather than escalating medications by guess. For patients with severe, eosinophilic, or biologic-eligible asthma — or co-existing nasal polyps, eczema, or chronic urticaria — we provide on-site Dupixent, Xolair, Nucala, Fasenra, Tezspire, and Cinqair with our nursing team managing the full prior authorization process.

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

Spring (mid-February through May) is dominated by oak, elm, ash, and pecan pollen and is typically the worst season for most Katy-area patients. Summer brings heavy Bermuda and Bahia grass pollen. Fall (August through October) is ragweed and pigweed season. Winter brings mountain cedar drifting in from Central Texas. Mold and dust mite exposure stay elevated year-round due to humidity.

Yes. We see a large number of Katy ISD student-athletes for exercise-induced asthma, exercise-induced laryngeal obstruction (a common asthma mimic that doesn’t respond to inhalers), and exercise-related allergies. We perform objective testing and create a plan that allows safe, full participation in sports.

Yes — pediatric food allergy is one of our core areas. We offer skin testing, blood testing, supervised oral food challenges, and oral immunotherapy (OIT) for appropriate patients. We also help families avoid unnecessary food avoidance, which can be just as harmful as missing a true allergy.

For the right patient, yes. Allergy shots are the only treatment proven to modify the underlying allergic disease, and many patients experience long-lasting benefit that continues after the 3- to 5-year course is completed. They are particularly worthwhile for patients with significant symptoms despite medication, multiple allergic triggers, asthma driven by allergens, or a desire to reduce reliance on daily medication.

Yes. We administer all FDA-approved biologics for severe asthma, chronic rhinosinusitis with nasal polyps, atopic dermatitis, chronic urticaria, and eosinophilic esophagitis on-site. Our team handles prior authorizations and specialty pharmacy coordination.

Most new patients are scheduled within the same week, and urgent cases (recent anaphylaxis, severe hives, poorly controlled asthma) are typically seen within 24 to 48 hours. Call or book online and we’ll confirm same business day.

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

Real reviews from patients who trust SWAAA in Fulshear/Cinco Ranch

Schedule An Appointment Today

Cinco Ranch families choose us for the same reasons families across the Katy area do: deep specialty expertise, friendly and efficient service, same-week appointments, evening and select Saturday hours, most major insurance accepted, and bilingual support. Whether your child plays for Seven Lakes, Tompkins, Cinco Ranch, or Jordan High School, or you commute to the Energy Corridor or work from home in Cane Island, you deserve a real answer to your allergy and asthma symptoms — not another round of medication trial-and-error. Call today or book online to schedule at our clinic serving Cinco Ranch and the Katy area.

Allergy & Asthma Clinic in Cinco Ranch, TX

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