Katherine Liang, MD
NPI 1245800853 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Liang, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1245800853).
Provider details
- NPI number
- 1245800853
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 201629 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Pantoprazole Sodium | 23 |
| Carvedilol | 19 |
| Oxycodone Hcl | 12 |
| Fluticasone Propionate | 11 |
| Furosemide | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-06-26
- Last updated
- 2025-08-12
- Certified
- 2025-08-04
Frequently asked questions
- What is Katherine Liang's NPI number?
- Katherine Liang's National Provider Identifier (NPI) is 1245800853, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Liang's specialty?
- Katherine Liang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Liang located?
- Katherine Liang's practice location on file with NPPES is 2051 Marengo St, Los Angeles, CA 90033-1352.
- What is Katherine Liang's phone number?
- The practice phone number listed in the NPPES registry for Katherine Liang is (323) 409-1000.
- Does Katherine Liang accept Medicare?
- Katherine Liang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Liang's NPI active?
- Yes — Katherine Liang's NPI (1245800853) is active in the NPPES registry as of the last update on 2025-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.