Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark Clayton Stahl, DO

Individual provider Pediatrics Physician · NPI 1912932476

Dr. Mark Clayton Stahl, DO is an Allergy/Immunology in San Antonio, Texas. Graduated from Michigan State University College of Osteopathic Medicine in 2003, 23 years ago. Practices with Apex Allergy and Asthma, PLLC, a 2-clinician group and accepts Medicare assignment. Licensed in Ohio and Texas.

Years since qualifying
23
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
OH, TX
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

14615 San Pedro Ave Ste 250
San Antonio, TX 78232-4316
Phone: (210) 490-2051
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence P9742 (TX)
Pediatrics Physician Taxonomy 208000000X · Licence 34.010391 (OH)

Record details

NPI number1912932476
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 12, 2006
Last updated in NPPESApril 29, 2021
Certification dateApril 29, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2003 (23 years in practice)
Group practice Apex Allergy And Asthma, Pllc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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