Quick answers
- Does Tiffany Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Tiffany 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 Tiffany Nguyen see?
- In 2024, CMS data shows 97 Original Medicare patients and 272 services for Tiffany Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Tiffany Nguyen's NPI number?
- 1871138164. 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 Tiffany 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 | 97 |
|---|---|
| Services billed to Medicare | 272 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Administration of influenza virus vaccine (G0008)86 services
- Admn sarscov2 vacc 1 dose (90480)50 services
- Sarscov2 vac 50 mcg/0.5ml im (91322)50 services
- Influenza vaccine, inactivated (90653)41 services
- Influenza vaccine split virus, preservative free (90662)38 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 pressure55%
- High cholesterol52%
- Arthritis33%
- Diabetes19%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)16%
- Osteoporosis14%
Practice locations
Addresses where Tiffany Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 16950 Via TazonSan Diego, CA 92127 (858) 499‑2600
Group practices
Medicare enrollment lists Tiffany Nguyen as a member of this group (CMS data updated October 2, 2026).
- Sharp Rees-Stealy Medical Group Inc884 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Sharp Rees-Stealy Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | Touro Un College Of Osteopathic Medicine, Vallejo |
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871138164 |
| 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