Quick answers
- Does Margaret V. Hoang accept Medicare assignment?
- Medicare's clinician data says Margaret V. Hoang may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Margaret V. Hoang see?
- In 2024, CMS data shows 558 Original Medicare patients and 1,405 services for Margaret V. Hoang. This counts Original Medicare only and measures volume, not quality.
- What is Margaret V. Hoang's NPI number?
- 1891430559. 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 Margaret V. Hoang, 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 | 558 |
|---|---|
| Services billed to Medicare | 1,405 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)252 services
- Automated urinalysis test (81003)215 services
- Ultrasound measurement of bladder capacity after voiding (51798)202 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)167 services
- Administration of influenza virus vaccine (G0008)113 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%
- Diabetes47%
- Arthritis42%
- Chronic kidney disease35%
- Ischemic heart disease31%
Hospitals where Margaret V. Hoang works
Medicare's Facility Affiliation Data lists Margaret V. Hoang 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.
- Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
- Washington HospitalFremont, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050195
Practice locations
Addresses where Margaret V. Hoang is enrolled with Medicare (CMS data updated October 2, 2026).
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Fremont
Clinicians with the same Medicare primary specialty in Fremont, CA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1891430559 |
| 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