Quick answers
- Does Jon D. Beserra Ii accept Medicare assignment?
- Yes. Medicare's clinician data says Jon D. Beserra Ii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Jon D. Beserra Ii see?
- In 2024, CMS data shows 79 Original Medicare patients and 134 services for Jon D. Beserra Ii. This counts Original Medicare only and measures volume, not quality.
- What is Jon D. Beserra Ii's NPI number?
- 1336605682. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Jon D. Beserra Ii, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 79 |
|---|---|
| Services billed to Medicare | 134 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for x-ray on arteries (01924)93 services
- Anesthesia for other x-ray on vein or lymph system (01930)20 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes75%
- Arthritis59%
- Chronic kidney disease56%
- Ischemic heart disease47%
Practice locations
Addresses where Jon D. Beserra Ii is enrolled with Medicare (CMS data updated October 2, 2026).
- 11411 Brookshire Ave, Suite 301aDowney, CA 90241 (562) 548‑7530
- 18840 Ventura Blvd, Suite 100aTarzana, CA 91356 (818) 345‑6126
- 25821 Vermont AveHarbor City, CA 90710 (310) 325‑5111
- 25825 Vermont AveHarbor City, CA 90710 (310) 325‑5111
- 8283 Grove Ave, Suite 207aRancho Cucamonga, CA 91730 (562) 249‑1218
Group practices
Medicare enrollment lists Jon D. Beserra Ii as a member of these groups (CMS data updated October 2, 2026).
- Southern California Permanente Medical Group11,293 clinicians in the group
- SCQ Anesthesia a Professional Nursing Corporation14 clinicians in the group
- Innovative Minimally Invasive Imaging and Therapeutics, Inc4 clinicians in the group
- Pacific Vascular Access Care Inc4 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), California →
Other nurse anesthetists in Downey
Clinicians with the same Medicare primary specialty in Downey, CA — not a recommendation.
Other clinicians in Southern California Permanente Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336605682 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians