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DR THOMAS TSENG MEDICAL CLINIC INC
NPI 1497910129
Internal Medicine in Monterey Park, CA

Active since July 22, 2008
880 S ATLANTIC BLVD STE 208, MONTEREY PARK, CA 91754(626) 289-9478(626) 289-9718 Get Directions Write a Review

NPPES record last updated: August 24, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr Thomas Tseng Medical Clinic Inc NPPES

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

DR THOMAS TSENG MEDICAL CLINIC INC (NPI 1497910129) is a healthcare organization registered as an internal medicine in Monterey Park, California and active in the NPI registry since July 2008. The organization lists Thomas Mu-ren Tseng, President, as its authorized official.

NPPES Registry Identity

NPI1497910129
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameDR THOMAS TSENG MEDICAL CLINIC INC
Location Address880 S ATLANTIC BLVD STE 208Monterey Park, CA 91754-4700
Mailing Address880 S Atlantic Blvd Ste 208Monterey Park, CA 91754-4700 · (626) 289-9478 · Fax (626) 289-9718
Phone(626) 289-9478
Fax(626) 289-9718
Organization SubpartNo
Authorized OfficialThomas Mu-ren TsengPresident · (626) 289-9478
Enumeration DateJuly 22, 2008
Last NPPES UpdateAugust 24, 2010
✔ NPI 1497910129 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedClinic/Center · Health ServiceTaxonomy 261QH0100X · License 20A6968 (CA)
880 S ATLANTIC BLVD STE 208, Monterey Park, CA 91754
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr Thomas Tseng Medical Clinic Inc 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 Dr Thomas Tseng Medical Clinic Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Thomas Tseng, DO
Internal Medicine
NPI 1912017211
880 S ATLANTIC BLVD SUITE 208
Monterey Park, CA 91754
(626) 289-9478
✔ 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 Dr Thomas Tseng Medical Clinic Inc's NPI number?

The NPI number for Dr Thomas Tseng Medical Clinic Inc is 1497910129. It was assigned to this organization in the NPPES registry on July 22, 2008.

Where is Dr Thomas Tseng Medical Clinic Inc located?

Dr Thomas Tseng Medical Clinic Inc is located at 880 S Atlantic Blvd Ste 208, Monterey Park, CA 91754. The listed phone number is (626) 289-9478.

What is Dr Thomas Tseng Medical Clinic Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Dr Thomas Tseng Medical Clinic Inc enrolled in Medicare?

Yes. Dr Thomas Tseng Medical Clinic Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Dr Thomas Tseng Medical Clinic Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Dr Thomas Tseng Medical Clinic Inc. 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 Dr Thomas Tseng Medical Clinic Inc was last updated on August 24, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years 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.