IMPERIAL FAMILY MEDICAL GROUP, A PROFESSIONAL CORP
NPI 1366454639
Internal Medicine in Downey, CA

Q: What is Imperial Family Medical Group, A Professional Corp's specialty?

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

Active since August 13, 2006CLIA 05D0547608 · Waiver

12651 LAKEWOOD BLVD, DOWNEY, CA 90242(562) 861-3111(562) 861-9721 Get Directions Write a Review

NPPES record last updated: March 20, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Imperial Family Medical Group, A Professional Corp NPPES

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

IMPERIAL FAMILY MEDICAL GROUP, A PROFESSIONAL CORP (NPI 1366454639) is a healthcare organization registered as an internal medicine in Downey, California and active in the NPI registry since August 2006. The organization holds a CLIA Waiver certificate valid through June 21, 2027 and lists Diana Hsu, Vice President/secretary, as its authorized official.

NPPES Registry Identity

NPI1366454639

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameIMPERIAL FAMILY MEDICAL GROUP, A PROFESSIONAL CORP

Location Address12651 LAKEWOOD BLVDDowney, CA 90242-4563

Mailing Address12651 Lakewood BlvdDowney, CA 90242-4563 · (562) 861-3111 · Fax (562) 861-9721

Phone(562) 861-3111

Fax(562) 861-9721

Organization SubpartNo

Authorized OfficialDiana HsuVice President/secretary · (562) 861-3111

Enumeration DateAugust 13, 2006

Last NPPES UpdateMarch 20, 2023

NPPES CertifiedMarch 20, 2023

✔ NPI 1366454639 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ 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.

12651 LAKEWOOD BLVD, Downey, CA 90242

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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)

Imperial Family Medical Group, A Professional Corp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Imperial Family Medical Group, A Professional Corp, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Diana Hsu, M.D.

Internal Medicine

NPI 1720090137

12651 LAKEWOOD BLVD
Downey, CA 90242

(562) 861-3111

✔ PECOSSame address

Goethe Hsu, M.D.

Internal Medicine

NPI 1386656726

12651 LAKEWOOD BLVD
Downey, CA 90242

(562) 861-3111

✔ 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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0547608

Imperial Family Medical Group · Downey, CA

Active · expires Jun 21, 2027

CLIA Number05D0547608

Laboratory TypePhysician Office

Certificate Effective DateJune 22, 2025

Certificate Expiration DateJune 21, 2027

Laboratory DirectorDiana Hsu MD

Laboratory Phone(562) 861-3111

Laboratory LocationImperial Family Medical Group12651 S Lakewood Blvd, Downey, CA 90242

CLIA data matches this NPI record on: Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Imperial Family Medical Group, A Professional Corp's NPI number?

The NPI number for Imperial Family Medical Group, A Professional Corp is 1366454639. It was assigned to this organization in the NPPES registry on August 13, 2006.

Where is Imperial Family Medical Group, A Professional Corp located?

Imperial Family Medical Group, A Professional Corp is located at 12651 Lakewood Blvd, Downey, CA 90242. The listed phone number is (562) 861-3111.

What is Imperial Family Medical Group, A Professional Corp's specialty?

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

Is Imperial Family Medical Group, A Professional Corp enrolled in Medicare?

Yes. Imperial Family Medical Group, A Professional Corp is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Imperial Family Medical Group, A Professional Corp?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to Imperial Family Medical Group, A Professional Corp. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Imperial Family Medical Group, A Professional Corp hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0547608) is associated with this NPI, valid through June 21, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Imperial Family Medical Group, A Professional Corp was last updated on March 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.