Phuong Nguyen, PA
NPI 1891079059 · Physician Assistant · San Francisco, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Phuong Nguyen, PA is a Physician Assistant provider in San Francisco, CA (NPI 1891079059).
Provider details
- NPI number
- 1891079059
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- Yes
- License
- 015187 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
141 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) |
|---|---|---|
| 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'SG2211 | 69 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $139 |
| Online Digital Evaluation and Management Service for an Established Patient for Up to 7 Days, Total Time 5-10 Minutes99421 | 16 | $12 |
Typical Medicare-allowed amounts for these services range $12–$139 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tacrolimus | 144 | 45 |
| Mycophenolate Mofetil | 132 | 39 |
| Omeprazole | 103 | 26 |
| Prednisone | 81 | 34 |
| Mycophenolate Sodiumbrand: Mycophenolic Acid | 52 | 13 |
| Tenofovir Alafenamidebrand: Vemlidy | 42 | — |
| Everolimus | 40 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$204 across 3 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
- 2011-10-06
- Last updated
- 2023-08-02
- Certified
- 2023-08-02
Frequently asked questions
- What is Phuong Nguyen's NPI number?
- Phuong Nguyen's National Provider Identifier (NPI) is 1891079059, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Phuong Nguyen's specialty?
- Phuong Nguyen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Phuong Nguyen located?
- Phuong Nguyen's practice location on file with NPPES is 350 Parnassus Ave Ste 805, San Francisco, CA 94117-3608.
- What is Phuong Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Phuong Nguyen is (858) 337-3314.
- Does Phuong Nguyen accept Medicare?
- Phuong Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Phuong Nguyen's NPI active?
- Yes — Phuong Nguyen's NPI (1891079059) is active in the NPPES registry as of the last update on 2023-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.