Quick answers
- Does Sharon M. Paiz accept Medicare assignment?
- Medicare's clinician data says Sharon M. Paiz may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Sharon M. Paiz see?
- In 2024, CMS data shows 26 Original Medicare patients and 46 services for Sharon M. Paiz. This counts Original Medicare only and measures volume, not quality.
- What is Sharon M. Paiz's NPI number?
- 1538846415. 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 Sharon M. Paiz, 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 | 26 |
|---|---|
| Services billed to Medicare | 46 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)14 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%
- Diabetes65%
Hospitals where Sharon M. Paiz works
Medicare's Facility Affiliation Data lists Sharon M. Paiz 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
- Chino Valley Medical CenterChino, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050586
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050099
Practice locations
Addresses where Sharon M. Paiz is enrolled with Medicare (CMS data updated October 2, 2026).
- 5050 San Bernardino StMontclair, CA 91763 (909) 281‑5800
Group practices
Medicare enrollment lists Sharon M. Paiz as a member of this group (CMS data updated October 2, 2026).
- Health Service Alliance14 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Montclair
Clinicians with the same Medicare primary specialty in Montclair, CA — not a recommendation.
Other clinicians in Health Service Alliance
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1538846415 |
| 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