Lillian Nguyen, PA-C
NPI 1245717024 · Physician Assistant · Orange, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lillian Nguyen, PA-C is a Physician Assistant provider in Orange, CA (NPI 1245717024).
Provider details
- NPI number
- 1245717024
- 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
- Medical Physician Assistant363AM0700X
Physician Assistants & Advanced Practice Nursing Providers
- Surgical Physician Assistant363AS0400X
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
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,821 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 1,672 | $66 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 149 | $118 |
Typical Medicare-allowed amounts for these services range $66–$118 (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 |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 131 | 52 |
| Gabapentin | 77 | 54 |
| Naloxone Hcl | 51 | 44 |
| Methocarbamol | 44 | 33 |
| Tramadol Hcl | 41 | 23 |
| Oxycodone Hcl | 31 | 23 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-07-24
- Last updated
- 2024-08-08
- Certified
- 2024-08-08
Frequently asked questions
- What is Lillian Nguyen's NPI number?
- Lillian Nguyen's National Provider Identifier (NPI) is 1245717024, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lillian Nguyen's specialty?
- Lillian Nguyen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lillian Nguyen located?
- Lillian Nguyen's practice location on file with NPPES is 280 S Main St Ste 200, Orange, CA 92868-3852.
- What is Lillian Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Lillian Nguyen is (146) 344-5677.
- Does Lillian Nguyen accept Medicare?
- Lillian Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lillian Nguyen's NPI active?
- Yes — Lillian Nguyen's NPI (1245717024) is active in the NPPES registry as of the last update on 2024-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.