Quick answers
- Does Amelia M. Ooi accept Medicare assignment?
- Medicare's clinician data says Amelia M. Ooi may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Amelia M. Ooi see?
- In 2024, CMS data shows 163 Original Medicare patients and 270 services for Amelia M. Ooi. This counts Original Medicare only and measures volume, not quality.
- What is Amelia M. Ooi's NPI number?
- 1558146860. 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 Amelia M. Ooi, 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 | 163 |
|---|---|
| Services billed to Medicare | 270 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)99 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)39 services
- Urinalysis, manual test (81002)30 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)16 services
- Routine electrocardiogram (ecg) using at least 12 leads with tracing (93005)12 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 cholesterol75%
- High blood pressure72%
- Arthritis50%
- Diabetes35%
- Chronic kidney disease28%
- Depression23%
Practice locations
Addresses where Amelia M. Ooi is enrolled with Medicare (CMS data updated October 2, 2026).
- 1601 Monte Vista Ave, Suite 190Claremont, CA 91711 (909) 865‑9977
- 1770 N Orange Grove Ave, Suite 101Pomona, CA 91767 (909) 469‑9494
- 2140 Grand Ave, Suite 125Chino Hills, CA 91709 (909) 630‑7875
- 2333 Foothill BlvdLa Verne, CA 91750 (909) 392‑6501
Group practices
Medicare enrollment lists Amelia M. Ooi as a member of this group (CMS data updated October 2, 2026).
- Premier Family Medicine Associates, Inc65 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Claremont
Clinicians with the same Medicare primary specialty in Claremont, CA — not a recommendation.
Other clinicians in Premier Family Medicine Associates, Inc
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) | 1558146860 |
| 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