SEAN TSAI D O PROFESSIONAL CORPORATION
NPI 1780776013
Neuromusculoskeletal Medicine & OMM in South Pasadena, CA

Q: What is Sean Tsai D O Professional Corporation's specialty?

The primary specialty registered for this NPI is Neuromusculoskeletal Medicine & OMM with taxonomy code 204D00000X.

Active since September 28, 2006

1108 FREMONT AVE., SOUTH PASADENA, CA 91030(626) 793-0660(626) 793-0660 Get Directions Write a Review

NPPES record last updated: January 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 15, 2026, Aug 22, 2020 (2 updates tracked since 2020).

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About Sean Tsai D O Professional Corporation NPPES

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

SEAN TSAI D O PROFESSIONAL CORPORATION (NPI 1780776013) is a healthcare organization registered as a neuromusculoskeletal medicine & omm in South Pasadena, California and active in the NPI registry since September 2006. The organization lists Sean I-hsin Tsai, President, as its authorized official.

NPPES Registry Identity

NPI1780776013

Entity TypeOrganization

Primary Taxonomy204D00000X

Legal Business NameSEAN TSAI D O PROFESSIONAL CORPORATION

Location Address1108 FREMONT AVE.South Pasadena, CA 91030-3227

Mailing Address1108 Fremont AveSouth Pasadena, CA 91030-3227 · (626) 793-0660 · Fax (626) 793-0660

Phone(626) 793-0660

Fax(626) 793-0660

Organization SubpartNo

Authorized OfficialSean I-hsin TsaiPresident · (626) 793-0660

Enumeration DateSeptember 28, 2006

Last NPPES UpdateJanuary 15, 20262 updates tracked since enumeration

NPPES CertifiedJanuary 15, 2026

✔ NPI 1780776013 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeuromusculoskeletal Medicine & OMMAllopathic & Osteopathic Physicians

Taxonomy Code204D00000X

License✔ Licensed in CA · 20A7930

Definition

The Neuromusculoskeletal Medicine and Osteopathic Manipulative Medicine physician directs special attention to the neuromusculoskeletal system and its interaction with other body systems. Neuromusculoskeletal Medicine and Osteopathic Manipulative Medicine encompasses increased knowledge and understanding of osteopathic principles and practice and heightened technical skills of osteopathic manipulative medicine, and integrates each of these into the management of pediatric, adolescent, adult, and geriatric patients.

1108 FREMONT AVE., South Pasadena, CA 91030

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE 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)

Sean Tsai D O Professional 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 Sean Tsai D O Professional Corporation, which bills Medicare for the services this clinician delivers.

Clinician (1)

Sean Tsai, D.O.

Family Practice

NPI 1932130697

1108 FREMONT AVE
South Pasadena, CA 91030

(626) 793-0660

✔ 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 Sean Tsai D O Professional Corporation's NPI number?

The NPI number for Sean Tsai D O Professional Corporation is 1780776013. It was assigned to this organization in the NPPES registry on September 28, 2006.

Where is Sean Tsai D O Professional Corporation located?

Sean Tsai D O Professional Corporation is located at 1108 Fremont Ave., South Pasadena, CA 91030. The listed phone number is (626) 793-0660.

What is Sean Tsai D O Professional Corporation's specialty?

The primary specialty registered for this NPI is Neuromusculoskeletal Medicine & OMM with taxonomy code 204D00000X.

Is Sean Tsai D O Professional Corporation enrolled in Medicare?

Yes. Sean Tsai D O Professional Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Sean Tsai D O Professional Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Sean Tsai D O Professional 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 Sean Tsai D O Professional Corporation was last updated on January 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.