NPPES file of Aug 9, 2026

Alexander Jason Bressler, DO

Family Medicine Physician · Fontana, CA

Alexander Jason Bressler, DO is a family medicine physician with a practice address in Fontana, California, and NPI 1073991709, issued on May 14, 2015. Check the license (California 20A14899, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1073991709
Name
Alexander Jason Bressler
Credential
DO
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20A14899 CA
Self-reported in NPPES; status is on the state search
Practice location
17234 Valley Blvd, Fontana, CA 92335
Phone
(909) 427-5084
Enumerated
May 14, 2015
Record last updated
Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170223001970); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 17234 Valley Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nada Awad, MDStudent in an Organized Health Care Education/Training Program1770070591
  2. Blake BaileyStudent in an Organized Health Care Education/Training Program1265168496
  3. George BanzonStudent in an Organized Health Care Education/Training Program1952006231
  4. Matthew BergendahlStudent in an Organized Health Care Education/Training Program1417650268
  5. Shanon Biagi-FahimStudent in an Organized Health Care Education/Training Program1215787684
  6. Genise Browne, MDStudent in an Organized Health Care Education/Training Program1073218269

Verify Alexander Jason Bressler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A14899
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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15% more Medicare Part D claims than the average family medicine physician in 2024

4,077 Medicare Part D claims for 839 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 114 claims were for opioids.

  1. Alexander Bressler4,077
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium305 claims
  2. Amlodipine Besylate192 claims
  3. Lisinopril150 claims
  4. Rosuvastatin Calcium136 claims
  5. Omeprazole120 claims
  6. Losartan Potassium115 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.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupFontana, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alexander Jason Bressler among 17,133 family medicine physician records in California

Alexander Jason Bressler, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 74% of them.

  • NPI issued2015 · 74% of these records are older, 24% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2015 · median 2005 among the 10,652 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

198 family medicine physician records list a practice address in Fontana

They are 198 of the 3,012 NPPES records with a practice address in Fontana, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Frances Burke, MDFontana, CA 923351972674901
  2. Nathan Carlson, M.D.Fontana, CA 923351144212929
  3. Christine Carlson, MDFontana, CA 923351386612299
  4. Thawat Eosakul, M.D.Fontana, CA 923351811904519
  5. Diane Hom, MDFontana, CA 923351821169707
  6. Anissa Lacount, MDFontana, CA 923351609854397
  7. Rubin Lin, D.O.Fontana, CA 923351679678916
  8. Lannie Moy, PA-CFontana, CA 923351922037738

Common questions

What is Alexander Jason Bressler, DO's NPI number?

Alexander Jason Bressler, DO's National Provider Identifier (NPI) is 1073991709, issued on May 14, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Alexander Jason Bressler, DO located?

The NPPES record lists a practice address at 17234 Valley Blvd, Fontana, CA, 92335. Phone: (909) 427-5084. Providers update this record themselves, so call before visiting.

How can I verify Alexander Jason Bressler, DO's license?

NPPES lists California license number 20A14899, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Alexander Jason Bressler, DO prescribe under Medicare Part D?

In 2024, Alexander Jason Bressler, DO had 4,077 Medicare Part D claims for 839 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.