Lilian Chou, PA-C
NPI 1306175021 · Medical Physician Assistant · Ontario, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lilian Chou, PA-C is a Medical Physician Assistant provider in Ontario, CA (NPI 1306175021).
Provider details
- NPI number
- 1306175021
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- PA20670 (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 tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 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 | 38 | 38 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 28 | 28 |
| Prednisone | 28 | 27 |
| Cephalexin | 21 | 21 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 20 | 20 |
| Ciprofloxacin Hcl | 19 | 19 |
| Ciclesonidebrand: Alvesco | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-12-08
- Last updated
- 2021-10-24
- Certified
- 2021-10-24
Frequently asked questions
- What is Lilian Chou's NPI number?
- Lilian Chou's National Provider Identifier (NPI) is 1306175021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lilian Chou's specialty?
- Lilian Chou is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lilian Chou located?
- Lilian Chou's practice location on file with NPPES is 1440 E Cedar St, Ontario, CA 91761-8300.
- What is Lilian Chou's phone number?
- The practice phone number listed in the NPPES registry for Lilian Chou is (626) 347-9359.
- Does Lilian Chou accept Medicare?
- Lilian Chou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lilian Chou's NPI active?
- Yes — Lilian Chou's NPI (1306175021) is active in the NPPES registry as of the last update on 2021-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.