Welcome to the office of Dr. Mark Stahl, formerly the office of Dr. Victor Estrada. We remain dedicated to providing the same exceptional care to our patients!

Allergy Shot Hours at 281 Location*:
(* last shot given 20 minutes before close)

Monday 9:00 am-12:00 pm, 1:00 pm-5:00pm
Wednesday 9:00 am-12:00pm, 1:00pm-6:00pm
Thursday 9:00am-12:00pm, 1:00pm-5:00pm

Apex Allergy and Asthma offers thorough integrative care for seasonal allergies, asthma, and more at their two offices in San Antonio, Texas. Double board-certified allergist Mark Stahl, DO, and the team at Apex Allergy and Asthma have extensive experience in diagnosing allergies and asthma in adults and children. They also personalize care using innovative, competitively priced treatments.

Dr. Stahl earned his Doctor of Osteopathy at the Michigan State University College of Osteopathic Medicine in 2003. He then completed his pediatric residency training at Keesler Air Force Base in Biloxi, Mississippi, from 2003-2005, and Wright-Patterson Air Force Base in Dayton, Ohio, from 2005-2006. 

Afterward, Dr. Stahl completed his pediatric and adult allergy/immunology fellowship at Wilford Hall Medical Center on Lackland Air Force Base in San Antonio in 2011. He served for 11 years as an active-duty member of the United States Air Force and as academic faculty for the Uniformed Services University of Health Sciences in Baltimore, Maryland. Dr. Stahl has also held academic appointments at Wright State University, University of Texas Health Science Center at San Antonio, and Baylor College of Medicine. 

Dr. Stahl is certified by the American Board of Allergy and Immunology and the American Board of Pediatrics. To stay current with the latest developments in his field, he maintains professional memberships with the Texas Allergy, Asthma, & Immunology Society; San Antonio Allergy, Asthma, & Immunology Society; Texas Medical Association; Bexar County Medical Society; American Academy of Allergy, Asthma & Immunology; and American College of Allergy, Asthma & Immunology.

Additionally, Dr. Stahl has contributed to works published in national, peer-reviewed publications, including the Annals of Allergy, Asthma & Immunology and The Journal of Allergy and Clinical Immunology(JACI): In Practice. He has also served as a sub-investigator in numerous research studies.

At Apex Allergy and Asthma, Dr. Stahl and his team diagnose and treat allergy-related issues like eczema and angioedema using blood tests, skin patch testing, and other minimally invasive allergy tests. They pinpoint the underlying triggers of food allergies, environmental allergies, and hives so that patients can receive the treatment they need.

Customized allergy treatments include over-the-counter and prescription medications. Dr. Stahl and his team also offer different immunotherapies, including rush and cluster immunotherapy, to give their patients fast, long-lasting relief from allergy symptoms.

The Apex Allergy and Asthma team offers pulmonary function testing on-site to evaluate breathing issues and confirm asthma diagnoses. Dr. Stahl and the team focus their treatment on protecting your respiratory health, and they work closely with each patient to reduce their risk of suffering anaphylaxis and other potentially life-threatening complications of asthma and allergies.

If you need help managing acute or chronic symptoms of allergies or asthma, call the Apex Allergy and Asthma office nearest you. You can also request an appointment online.

New and Existing Patients:
Visit the Patient Portal link above to access new patient forms and more!

Insurance Providers

We have contracts with many insurance companies and we update our listing regularly. We recommend you confirm your insurance at the time you make the appointment. There may also be pre-certification requirements that may need to take place before you come in to receive services.

Tricare and Medicaid coverage coming soon. Please call us with any coverage-related questions.

Aetna
Blue Cross Blue Shield
Cigna
Humana
Medicaid
Medicare
PHCS
Tricare
United Healthcare
Walk-in Allergy Shot Hours available during office hours on Monday, Wednesday and Thursday with a break between 12p-1p.
Last shot given 20 minutes before close

281 LOCATION

Apex Allergy and Asthma
14615 San Pedro Ave Ste 250,
San Antonio, TX 78232
Phone: 210-239-0302
fax: 210-490-6758
info@apexallergysa.com

OFFICE HOURS

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

9am - 5pm
9am - 5pm
9am - 6pm
9am - 5pm
Closed
Closed
Closed

 
Allergy Shot Times:
Monday, Wednesday and Thursday except during lunch hour (12-1).
Last shot given 20 minutes before close.

I-10 LOCATION

Apex Allergy and Asthma
5718 University Heights Suite 202
San Antonio, TX 78249
Phone: 210-503-7869
fax: 210-490-6758
info@apexallergysa.com

OFFICE HOURS

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Opening Soon
Opening Soon
Opening Soon
Opening Soon
Opening Soon
Closed
Closed

Our University Heights location is currently under construction and will be opening our doors very soon!