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MAN C DUONG MD A PROFESSIONAL CORPORATION
NPI 1134563976
Internal Medicine in Calexico, CA

Active since April 23, 2013
423 E 2ND ST, CALEXICO, CA 92231(760) 890-5432(877) 409-2620 Get Directions Write a Review

NPPES record last updated: March 20, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Man C Duong Md A Professional Corporation NPPES

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

MAN C DUONG MD A PROFESSIONAL CORPORATION (NPI 1134563976) is a healthcare organization registered as an internal medicine in Calexico, California and active in the NPI registry since April 2013. The organization lists Man Cong Duong, President, as its authorized official.

NPPES Registry Identity

NPI1134563976
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMAN C DUONG MD A PROFESSIONAL CORPORATION
Location Address423 E 2ND STCalexico, CA 92231-2846
Mailing Address423 E 2nd StCalexico, CA 92231-2846 · (279) 297-3417 · Fax (877) 409-2620
Phone(760) 890-5432
Fax(877) 409-2620
Organization SubpartNo
Authorized OfficialMan Cong DuongPresident · (279) 297-3417
Enumeration DateApril 23, 2013
Last NPPES UpdateMarch 20, 2024
NPPES CertifiedMarch 20, 2024
✔ NPI 1134563976 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A105702
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.
423 E 2ND ST, Calexico, CA 92231
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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)

Man C Duong Md A 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 Man C Duong MD A Professional Corporation, which bills Medicare for the services this clinician delivers.

Clinician (1)

Man Duong, M.D.
Internal Medicine
NPI 1679718399
423 E 2ND ST
Calexico, CA 92231
(760) 890-5432
✔ PECOSSame 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 Man C Duong MD A Professional Corporation's NPI number?

The NPI number for Man C Duong MD A Professional Corporation is 1134563976. It was assigned to this organization in the NPPES registry on April 23, 2013.

Where is Man C Duong MD A Professional Corporation located?

Man C Duong MD A Professional Corporation is located at 423 E 2nd St, Calexico, CA 92231. The listed phone number is (760) 890-5432.

What is Man C Duong MD A Professional Corporation's specialty?

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

Is Man C Duong MD A Professional Corporation enrolled in Medicare?

Yes. Man C Duong MD A Professional Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Man C Duong MD A Professional Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Man C Duong MD A 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 Man C Duong MD A Professional Corporation was last updated on March 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.