John David Mastrovich, M.D.
Allergy & Immunology Physician · San Antonio, TX
John David Mastrovich, M.D. is an allergy & immunology physician with a practice address in San Antonio, Texas, and NPI 1740205418, issued on Jul 13, 2006. Check the license (Texas L2449, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John David Mastrovich
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- L2449 TX
Self-reported in NPPES; status is on the state search - Practice location
- 20650 Stone Oak Pkwy, San Antonio, TX 78258
- Phone
- (210) 342-6200
- Enumerated
- Jul 13, 2006
- Record last updated
- Oct 12, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (210) 342-6201
- Medicare enrollment
- Enrolled (PECOS I20060508000357); may accept Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 327 in Texas → Look up another NPI →
Verify John David Mastrovich in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L2449Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
275 Medicare Part D claims for 62 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate45 claims
- Albuterol Sulfate Hfa30 claims
- Trelegy Ellipta27 claims
- Montelukast Sodium25 claims
- Fluticasone-Salmeterol13 claims
- Wixela Inhub12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John David Mastrovich among 327 allergy & immunology physician records in Texas
John David Mastrovich, M.D. is one of 327 allergy & immunology physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 18% of them.
- NPI issued2006 · 18% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1996 · median 2003 among the 228 with a school on file
- Record last updated2007 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Texas
There are 327 allergy & immunology physician records in Texas.
All 327 in Texas → Every provider in San Antonio → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Jurairat Molina, MDSan Antonio, TX 782581700829918
- Amanda Trott-Gregorio, MDSan Antonio, TX 782581568653756
- Michael Vaughn, M.D.PHD.San Antonio, TX 782581881687879
- Connie Vick, APRN, FNP-CSan Antonio, TX 782581487363941
- Araceli Elizalde, MDSan Antonio, TX 782571811174873
- Lisa McDonald, DNP, APRN, CPNPSan Antonio, TX 782571447331277
- John Dice, M.D.San Antonio, TX 782511437140506
- Noel Ales, DOGarden Ridge, TX 782661538159975
Common questions
What is John David Mastrovich, M.D.'s NPI number?
John David Mastrovich, M.D.'s National Provider Identifier (NPI) is 1740205418, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John David Mastrovich, M.D. located?
The NPPES record lists a practice address at 20650 Stone Oak Pkwy, San Antonio, TX, 78258. Phone: (210) 342-6200. Providers update this record themselves, so call before visiting.
How can I verify John David Mastrovich, M.D.'s license?
NPPES lists Texas license number L2449, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John David Mastrovich, M.D. prescribe under Medicare Part D?
In 2024, John David Mastrovich, M.D. had 275 Medicare Part D claims for 62 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.