LEONARD W LIANG MD A MEDICAL CORPORATION
NPI 1033323290
Specialist in Los Angeles, CA

Q: What is Leonard W Liang MD A Medical Corporation's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Active since May 09, 2007

1513 S GRAND AVE, SUITE 300, LOS ANGELES, CA 90015(213) 749-0662(213) 748-7254 Get Directions Write a Review

NPPES record last updated: August 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 12, 2025, Feb 9, 2016 (2 updates tracked since 2016).

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About Leonard W Liang Md A Medical Corporation NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LEONARD W LIANG MD A MEDICAL CORPORATION (NPI 1033323290) is a healthcare organization registered as a specialist in Los Angeles, California and active in the NPI registry since May 2007. The organization lists Leonard W. Liang, Ceo, as its authorized official.

NPPES Registry Identity

NPI1033323290

Entity TypeOrganization

Primary Taxonomy174400000X

Legal Business NameLEONARD W LIANG MD A MEDICAL CORPORATION

Location Address1513 S GRAND AVE, SUITE 300Los Angeles, CA 90015-3070

Mailing Address46 Via CapriRancho Palos Verdes, CA 90275-5372 · (213) 484-1140

Phone(213) 749-0662

Fax(213) 748-7254

Organization SubpartNo

Authorized OfficialLeonard W. LiangCeo · (213) 749-0662

Enumeration DateMay 9, 2007

Last NPPES UpdateAugust 12, 20252 updates tracked since enumeration

NPPES CertifiedAugust 12, 2025

✔ NPI 1033323290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in CA · A66024

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

1513 S GRAND AVE, Los Angeles, CA 90015

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leonard W Liang Md A Medical Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Leonard W Liang MD A Medical Corporation, which bills Medicare for the services this clinician delivers.

Clinician (1)

Leonard Liang, M.D.

Urology

NPI 1134131196

1513 S GRAND AVE STE 300
Los Angeles, CA 90015

(213) 749-0662

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leonard W Liang MD A Medical Corporation's NPI number?

The NPI number for Leonard W Liang MD A Medical Corporation is 1033323290. It was assigned to this organization in the NPPES registry on May 9, 2007.

Where is Leonard W Liang MD A Medical Corporation located?

Leonard W Liang MD A Medical Corporation is located at 1513 S Grand Ave Suite 300, Los Angeles, CA 90015. The listed phone number is (213) 749-0662.

What is Leonard W Liang MD A Medical Corporation's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Leonard W Liang MD A Medical Corporation enrolled in Medicare?

Yes. Leonard W Liang MD A Medical Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Leonard W Liang MD A Medical Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Urology) reassigns their Medicare billing to Leonard W Liang MD A Medical Corporation. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Leonard W Liang MD A Medical Corporation was last updated on August 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.