APEX ALLERGY AND ASTHMA PLLC
NPI 1770166548
Allergy & Immunology in San Antonio, TX

Q: What is Apex Allergy And Asthma PLLC's NPI number?

The NPI number for Apex Allergy And Asthma PLLC is 1770166548. It was assigned to this organization in the NPPES registry on April 29, 2021.

Q: What is Apex Allergy And Asthma PLLC's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Active since April 29, 2021

14615 SAN PEDRO AVE STE 250, SAN ANTONIO, TX 78232(210) 490-2051 Get Directions Write a Review

NPPES record last updated: April 29, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Apex Allergy And Asthma Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

APEX ALLERGY AND ASTHMA PLLC (NPI 1770166548) is a healthcare organization registered as an allergy & immunology in San Antonio, Texas and active in the NPI registry since April 2021. The organization maintains a secondary practice location in San Antonio and lists Mark C Stahl, President, as its authorized official.

NPPES Registry Identity

NPI1770166548

Entity TypeOrganization

Primary Taxonomy207K00000X

Legal Business NameAPEX ALLERGY AND ASTHMA PLLC

Location Address14615 SAN PEDRO AVE STE 250San Antonio, TX 78232-4316

Mailing Address14615 San Pedro Ave Ste 250San Antonio, TX 78232-4316 · (210) 490-2051

Phone(210) 490-2051

Organization SubpartNo

Authorized OfficialMark C StahlPresident · (210) 490-2051

Enumeration DateApril 29, 2021

NPPES CertifiedApril 29, 2021

✔ NPI 1770166548 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians

Taxonomy Code207K00000X

Definition

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

14615 SAN PEDRO AVE STE 250, San Antonio, TX 78232

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Secondary Practice Location 1

Location 15718 University Hts Ste 202San Antonio, TX 78249-1131 · Phone (210) 490-2051

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Apex Allergy And Asthma Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Apex Allergy And Asthma PLLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

David Hrncir, M.D.

Allergy/Immunology

NPI 1023080124

14615 SAN PEDRO AVE STE 250
San Antonio, TX 78232

(210) 490-2051

✔ PECOS✔ Accepts MedicareSame address

Mark Stahl, D.O.

Allergy/Immunology

NPI 1912932476

14615 SAN PEDRO AVE STE 250
San Antonio, TX 78232

(210) 490-2051

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Apex Allergy And Asthma PLLC's NPI number?

The NPI number for Apex Allergy And Asthma PLLC is 1770166548. It was assigned to this organization in the NPPES registry on April 29, 2021.

Where is Apex Allergy And Asthma PLLC located?

Apex Allergy And Asthma PLLC is located at 14615 San Pedro Ave Ste 250, San Antonio, TX 78232. The listed phone number is (210) 490-2051.

What is Apex Allergy And Asthma PLLC's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Apex Allergy And Asthma PLLC enrolled in Medicare?

Yes. Apex Allergy And Asthma PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Apex Allergy And Asthma PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Allergy/Immunology, reassign their Medicare billing to Apex Allergy And Asthma PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Apex Allergy And Asthma PLLC accept?

Health plans from Blue Cross and Blue Shield of Texas list Apex Allergy And Asthma PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Apex Allergy And Asthma PLLC was last updated on April 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.