NPI age
19 years
Enumerated 2006-09-14
● Active Type 2 · Organization
John Mastrovich, M.d., P.A.
John Mastrovich, M.d., P.A. is 1 of 506 allergy & immunology organizations in Texas.
Primary specialty
Allergy & Immunology
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Mastrovich
President
Last NPPES update
2007-10-12
Source: monthly bulk 2026-05
How this organization compares
Across 506 active allergy & immunology providers in Texas.
NPI age
19 years
≈ at median (19 yr)
Practice locations
1
0 secondary on file
Subspecialties
0
NPI lifetime · 2006 → 2026
2006-09Enumerated in NPPES
2006
2026
Where they practice
Primary practice location
20650 Stone Oak Pkwy, Suite 106
San Antonio, TX 782587355
Mailing address
20650 Stone Oak Pkwy, Suite 106
San Antonio, TX 782587355
Authorized official
John David Mastrovich, M.D.
President
📞 2103426200
Individual providers at this organization
1 individual provider on file at this primary practice address.
- John Mastrovich, M.D. Allergy & Immunology NPI 1740205418
Specialties
-
Allergy & Immunology PrimaryAn 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...
Other names on file (1)
Doing-business-as, former, and alternate names recorded by NPPES.
-
Family Allergy and Asthma Specialists
Practice context
Multi-provider organization. 1 individual provider on file at this primary address.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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