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Dr McKenna Allergy Asthma – Allergy and Asthma Clinic

Allergy Care • Harlingen, TX • Multiple locations: Harlingen, McAllen, Brownsville (as per retirement letter listing numbers) locations

About

Allergy Care

Harlingen, TX (McAllen/Brownsville area mentioned in retirement letter)

956-425-9240

McKennaAllergy@sbcglobal.net

Not published — contact the clinic to confirm hours.

Dr. McKenna, Board Certified in Allergy and Immunology; Clinical Associate Professor, UT Health Science Center — Owner/Physician (retiring)
Rigoberto Garza, MD, Board Certified in Internal Medicine and Allergy and Immunology — Physician
Cleo Pena, PA, PA with long-standing practice at clinic — Physician Assistant

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Phone/phone calls for scheduling, in-office payment options likely, Contact for details

What is the retirement announcement for Dr. McKenna?

Dr. McKenna retires effective April 20, 2026; care will continue with Dr. Garza and PA Cleo Pena.

APPOINTMENTS ARE REQUIRED FOR ALL VISITS AND ALLERGY SHOTS.

We will be closed the week of December 26. Normal operation hours will resume Monday, January 2, 2023. No exceptions.

Overall sentiment across review platforms: positive

Patients praise

Common complaints

Needs improvement in provided follow-up (noted in a single patient feedback metric)

"Very good doctor."

— Vitals

"Caring Dr. And staff."

— Vitals

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Dr. Daniel Ramirez, MD, Asthma & Allergy Specialist | San Antonio, TX | WebMD — Mar 26, 2026
Dr. Dustin L. Fowler, DO - Allergist-Immunologist in Waco, TX — May 14, 2026
Alyssa B. Arredondo, PA - Physician Assistant in San Antonio, TX — Jun 11, 2026
Dr. Alissa Welsh, MD - Allergist-Immunologist in Webster, TX — May 14, 2026
Mckenzie Kline, PA - Physician Assistant in El Paso, TX — May 14, 2026

Information sourced from the clinic's website as of July 11, 2026.