LEAH TSUI MS, RDN, LDN
NPI 1306493945
Dietitian, Registered in Los Angeles, CA

Q: What is Leah Tsui's NPI number?

The NPI number for Leah Tsui is 1306493945. It was assigned to this individual provider in the NPPES registry on August 19, 2019.

Q: What is Leah Tsui's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Q: When was this NPI record last updated?

The NPPES record for Leah Tsui was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since August 19, 2019

200 S BARRINGTON AVE UNIT 49870, LOS ANGELES, CA 90049(323) 457-8796 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 7, 2026, Aug 19, 2019 (2 updates tracked since 2019).

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About Leah Tsui Ms, Rdn, Ldn NPPES

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

LEAH TSUI MS, RDN, LDN (NPI 1306493945) is an individual dietitian, registered in Los Angeles, California and active in the NPI registry since August 2019.

NPPES Registry Identity

NPI1306493945

Entity TypeIndividualFemale

Primary Taxonomy133V00000X

Provider Legal NameLEAH TSUICredential: MS, RDN, LDN

Location Address200 S BARRINGTON AVE UNIT 49870Los Angeles, CA 90049-7837

Mailing Address200 S Barrington Ave Unit 49870Los Angeles, CA 90049-7837 · (323) 457-8796

Phone(323) 457-8796

Sole ProprietorNo

Enumeration DateAugust 19, 2019

Last NPPES UpdateMay 7, 20262 updates tracked since enumeration

NPPES CertifiedMay 7, 2026

✔ NPI 1306493945 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers

Taxonomy Code133V00000X

Definition

A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.

200 S BARRINGTON AVE UNIT 49870, Los Angeles, CA 90049

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leah Tsui Ms, Rdn, Ldn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Leah Tsui reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ciba Health Inc.

2,463 mi

Corporate Health

1185 6TH AVE FL 3
New York, NY 10036

Reassigned Medicare billing, Texas enrollment
2 clinicians in this Medicare group

NPI 1295313518 (347) 706-9929

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

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LEAH TSUI NUTRITION LLC DBA LIMITLESS NUTRITION

Dietitian, Registered

200 S BARRINGTON AVE UNIT 49870
LOS ANGELES, CA 90049

Los Angeles County (323) 457-8796

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 Leah Tsui's NPI number?

The NPI number for Leah Tsui is 1306493945. It was assigned to this individual provider in the NPPES registry on August 19, 2019.

Where is Leah Tsui located?

Leah Tsui practices at 200 S Barrington Ave Unit 49870, Los Angeles, CA 90049. The listed phone number is (323) 457-8796.

What is Leah Tsui's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Leah Tsui enrolled in Medicare?

Yes. Leah Tsui is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Leah Tsui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Leah Tsui reassigns Medicare benefits to Ciba Health Inc. (New York, NY). The 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 Leah Tsui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Leah Tsui was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.