John F. Freiler, M.D.
Allergy Physician · San Antonio, TX
John F. Freiler, M.D. is an allergy physician with a practice address in San Antonio, Texas, and NPI 1407863533, issued on Aug 2, 2006. Check the license (Texas S2033, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John F. Freiler
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License numbers
- S2033 TX
25MA08413900 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 11840 Alamo Ranch Pkwy Ste 80, San Antonio, TX 78253
- Phone
- (210) 764-6567
- Enumerated
- Aug 2, 2006
- Record last updated
- Aug 10, 2023
- Fax
- (888) 395-3465
- Medicare enrollment
- Enrolled (PECOS I20210527000768); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 76 in Texas → Look up another NPI →
Verify John F. Freiler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S2033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average allergy physician in 2024
288 Medicare Part D claims for 61 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Azelastine Hcl80 claims
- Advair Hfa20 claims
- Fluticasone Propionate19 claims
- Trelegy Ellipta19 claims
- Albuterol Sulfate Hfa18 claims
- Montelukast Sodium17 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.
Industry payments in 2024: $1,725.53
25 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 502 providers of this specialty with any payment received $9,080.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
John F. Freiler among 76 allergy physician records in Texas
John F. Freiler, M.D. is one of 76 allergy physician records with a practice address in Texas. 75% 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 26% of them.
- NPI issued2006 · 26% of these records are older, 34% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1999 · median 1996 among the 46 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in Texas
There are 76 allergy physician records in Texas.
All 76 in Texas → Every provider in San Antonio → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Eliseo Villalobos, MDSan Antonio, TX 782491760479935
- Patricia Dinger, D.O.San Antonio, TX 782581770709370
- Adrianne Vaughn, M.D.San Antonio, TX 782581649263740
- Anna Heisser, MDSan Antonio, TX 782401104891365
- Bernardo Villacis, M.D.Fort Sam Houston, TX 782341336230374
- David Hrncir, M.D.San Antonio, TX 782321023080124
- Michael Tyler, M.D.San Antonio, TX 782321053432351
- Dennis Dilley, M.D.San Antonio, TX 782301720029218
Common questions
What is John F. Freiler, M.D.'s NPI number?
John F. Freiler, M.D.'s National Provider Identifier (NPI) is 1407863533, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John F. Freiler, M.D. located?
The NPPES record lists a practice address at 11840 Alamo Ranch Pkwy Ste 80, San Antonio, TX, 78253. Phone: (210) 764-6567. Providers update this record themselves, so call before visiting.
How can I verify John F. Freiler, M.D.'s license?
NPPES lists Texas license number S2033, 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 F. Freiler, M.D. prescribe under Medicare Part D?
In 2024, John F. Freiler, M.D. had 288 Medicare Part D claims for 61 beneficiaries; the average among allergy physician prescribers was 750. 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.