Quick answers
- Does Alexandria I. Arias accept Medicare assignment?
- Yes. Medicare's clinician data says Alexandria I. Arias 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 Alexandria I. Arias see?
- In 2024, CMS data shows 20 Original Medicare patients and 50 services for Alexandria I. Arias. This counts Original Medicare only and measures volume, not quality.
- What is Alexandria I. Arias's NPI number?
- 1902060361. 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 Alexandria I. Arias, 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 | 20 |
|---|---|
| Services billed to Medicare | 50 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
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 cholesterol75%
- Arthritis75%
- High blood pressure70%
Hospitals where Alexandria I. Arias works
Medicare's Facility Affiliation Data lists Alexandria I. Arias at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Casa Colina HospitalPomona, CA · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 050782
Practice locations
Addresses where Alexandria I. Arias is enrolled with Medicare (CMS data updated October 2, 2026).
- 1798 N Garey AvePomona, CA 91767 (909) 865‑9500
- 255 E Bonita AvePomona, CA 91767 (909) 593‑3550
- 255 E Bonita Ave, Bldg 9Pomona, CA 91767
Group practices
Medicare enrollment lists Alexandria I. Arias as a member of this group (CMS data updated October 2, 2026).
- Scott C Lederhaus MD and Lew B Disney MD PRT Lederhaus Scott C Gen PTR14 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Other clinicians in Scott C Lederhaus MD and Lew B Disney MD PRT Lederhaus Scott C Gen PTR
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902060361 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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