Stephen Liu, M.D.
NPI 1275858292 · Pulmonary Disease Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Liu, M.D. is a Pulmonary Disease Physician provider in Anaheim, CA (NPI 1275858292).
Provider details
- NPI number
- 1275858292
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A111234 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 32 | 13 |
| Tiotropium Bromidebrand: Spiriva Respimat | 29 | — |
| Fluticasone Propion/Salmeterolbrand: Wixela Inhub | 28 | — |
| Modafinil | 25 | — |
| Budesonide/Formoterol Fumaratebrand: Breyna | 17 | — |
| Clonazepam | 14 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-04-01
- Last updated
- 2021-10-26
- Certified
- 2021-10-26
Frequently asked questions
- What is Stephen Liu's NPI number?
- Stephen Liu's National Provider Identifier (NPI) is 1275858292, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Liu's specialty?
- Stephen Liu is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Liu located?
- Stephen Liu's practice location on file with NPPES is 3460 E La Palma Ave, Anaheim, CA 92806-2020.
- What is Stephen Liu's phone number?
- The practice phone number listed in the NPPES registry for Stephen Liu is (424) 261-9388.
- Does Stephen Liu accept Medicare?
- Stephen Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Liu's NPI active?
- Yes — Stephen Liu's NPI (1275858292) is active in the NPPES registry as of the last update on 2021-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.