Quick answers
- Does Vivian K. Ngo accept Medicare assignment?
- Yes. Medicare's clinician data says Vivian K. Ngo 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 Vivian K. Ngo see?
- In 2024, CMS data shows 121 Original Medicare patients and 349 services for Vivian K. Ngo. This counts Original Medicare only and measures volume, not quality.
- What is Vivian K. Ngo's NPI number?
- 1982125969. 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 Vivian K. Ngo, 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 | 121 |
|---|---|
| Services billed to Medicare | 349 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)83 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)79 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)34 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)23 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)15 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 cholesterol70%
- Diabetes58%
- Arthritis48%
- Chronic kidney disease32%
- Depression30%
Practice locations
Addresses where Vivian K. Ngo is enrolled with Medicare (CMS data updated October 2, 2026).
- 107 N McKinley StCorona, CA 92879 (951) 571‑8518
- 437 N Euclid AveOntario, CA 91762 (909) 988‑2555
Group practices
Medicare enrollment lists Vivian K. Ngo as a member of this group (CMS data updated October 2, 2026).
- Unicare Community Health Center, Inc.64 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Corona
Clinicians with the same Medicare primary specialty in Corona, CA — not a recommendation.
Other clinicians in Unicare Community Health Center, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982125969 |
| 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