Leonard Liang, M.D.
NPI 1134131196 · Specialist · Los Angeles, CA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Liang, M.D. is a Specialist provider in Los Angeles, CA (NPI 1134131196).
Provider details
- NPI number
- 1134131196
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A66024 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
179 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 69 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 32 | $138 |
| Simple Removal of Foreign Body, Stone, Or Stent in Urethra Or Bladder Using an Endoscope52310 | 17 | $354 |
| Complete Ultrasound Scan of Pelvis76856 | 17 | $80 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 15 | $122 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 84 | 36 |
| Finasteride | 46 | 19 |
| Vibegronbrand: Gemtesa | 31 | 12 |
| Tolterodine Tartratebrand: Tolterodine Tartrate Er | 22 | — |
| Enzalutamidebrand: Xtandi | 18 | — |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 16 | — |
| Sulfamethoxazole/Trimethoprim |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,152 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-11
- Last updated
- 2025-08-12
- Certified
- 2025-08-12
Frequently asked questions
- What is Leonard Liang's NPI number?
- Leonard Liang's National Provider Identifier (NPI) is 1134131196, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Liang's specialty?
- Leonard Liang is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Leonard Liang located?
- Leonard Liang's practice location on file with NPPES is 1513 S Grand Ave Ste 300, Los Angeles, CA 90015-3075.
- What is Leonard Liang's phone number?
- The practice phone number listed in the NPPES registry for Leonard Liang is (213) 749-0662.
- Does Leonard Liang accept Medicare?
- Leonard Liang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Liang's NPI active?
- Yes — Leonard Liang's NPI (1134131196) 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.