Quick answers
- Does Ha S. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Ha S. Nguyen 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 Ha S. Nguyen see?
- In 2024, CMS data shows 15 Original Medicare patients and 18 services for Ha S. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Ha S. Nguyen's NPI number?
- 1447275631. 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 Ha S. Nguyen, 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 | 15 |
|---|---|
| Services billed to Medicare | 18 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 61 |
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 cholesterol73%
Hospitals where Ha S. Nguyen works
Medicare's Facility Affiliation Data lists Ha S. Nguyen 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.
- College Medical CenterLong Beach, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050776
- St Mary Medical CenterLong Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050191
Practice locations
Addresses where Ha S. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 121 S Long Beach BlvdCompton, CA 90221 (310) 627‑5850
- 1951 Pacific AveLong Beach, CA 90806 (562) 218‑8778
Group practices
Medicare enrollment lists Ha S. Nguyen as a member of this group (CMS data updated October 2, 2026).
- The Roads Foundation, Inc61 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
- Internal Medicinealso
Other OB-GYNs in Compton
Clinicians with the same Medicare primary specialty in Compton, CA — not a recommendation.
Other clinicians in The Roads Foundation, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1447275631 |
| 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