Tiffany Quyen Nguyen, PA-C
NPI 1356804587 · Physician Assistant · Garden Grove, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tiffany Quyen Nguyen, PA-C is a Physician Assistant provider in Garden Grove, CA (NPI 1356804587).
Provider details
- NPI number
- 1356804587
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
379 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 238 | $82 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 124 | $13 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $102 |
Typical Medicare-allowed amounts for these services range $13–$102 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 52 | 23 |
| Atorvastatin Calcium | 29 | 16 |
| Amlodipine Besylate | 28 | 12 |
| Furosemide | 18 | — |
| Lisinopril | 18 | — |
| Losartan Potassium | 15 | 11 |
| Rosuvastatin Calcium | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$644 across 32 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-14
- Last updated
- 2020-04-27
- Certified
- 2020-04-27
Frequently asked questions
- What is Tiffany Quyen Nguyen's NPI number?
- Tiffany Quyen Nguyen's National Provider Identifier (NPI) is 1356804587, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tiffany Quyen Nguyen's specialty?
- Tiffany Quyen Nguyen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tiffany Quyen Nguyen located?
- Tiffany Quyen Nguyen's practice location on file with NPPES is 12495 Valley View St, Garden Grove, CA 92845-2032.
- What is Tiffany Quyen Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tiffany Quyen Nguyen is (714) 406-5756.
- Does Tiffany Quyen Nguyen accept Medicare?
- Tiffany Quyen Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tiffany Quyen Nguyen's NPI active?
- Yes — Tiffany Quyen Nguyen's NPI (1356804587) is active in the NPPES registry as of the last update on 2020-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.