Grace Nguyen
NPI 1285111575 · Physician Assistant · Pomona, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Nguyen is a Physician Assistant provider in Pomona, CA (NPI 1285111575).
Provider details
- NPI number
- 1285111575
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- PA55878 (CA)
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 tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
342 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Application of Skin Substitute Graft to Wound of Trunk, Arms, Or Legs, 25.0 Sq Cm Or Less of Wound 100.0 Sq Cm Or Less15271 | 98 | $149 |
| Removal of Skin and Tissue, 20.0 Sq Cm Or Less11042 | 85 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 60 | $62 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 50 | $72 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 29 | $117 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Monohydrate | 39 | 39 |
| Cefadroxil | 31 | 30 |
| Prednisone | 27 | 27 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 19 | 16 |
| Meloxicam | 17 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
| Cephalexin | 15 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-07-19
- Last updated
- 2023-09-26
Frequently asked questions
- What is Grace Nguyen's NPI number?
- Grace Nguyen's National Provider Identifier (NPI) is 1285111575, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Nguyen's specialty?
- Grace Nguyen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Grace Nguyen located?
- Grace Nguyen's practice location on file with NPPES is 1798 N Garey Ave, Pomona, CA 91767-2918.
- What is Grace Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Grace Nguyen is (909) 865-9500.
- Does Grace Nguyen accept Medicare?
- Grace Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Nguyen's NPI active?
- Yes — Grace Nguyen's NPI (1285111575) is active in the NPPES registry as of the last update on 2023-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.