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HOSSEINI MD MEDICAL INC
NPI 1891386843
Internal Medicine - Endocrinology, Diabetes & Metabolism in Mission Viejo, CA

Active since February 02, 2021
25982 PALA STE 140, MISSION VIEJO, CA 92691(949) 407-4404(949) 407-4647 Get Directions Write a Review

NPPES record last updated: February 2, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Hosseini Md Medical Inc NPPES

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

HOSSEINI MD MEDICAL INC (NPI 1891386843) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Mission Viejo, California and active in the NPI registry since February 2021. The organization lists Tina Ngo, Credential Rep, as its authorized official.

NPPES Registry Identity

NPI1891386843
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NameHOSSEINI MD MEDICAL INC
Location Address25982 PALA STE 140Mission Viejo, CA 92691-6724
Mailing Address13512 Moore StCerritos, CA 90703-2309 · (949) 407-4404 · Fax (949) 407-4647
Phone(949) 407-4404
Fax(949) 407-4647
Organization SubpartNo
Authorized OfficialTina NgoCredential Rep · (657) 900-6500
Enumeration DateFebruary 2, 2021
NPPES CertifiedFebruary 2, 2021
✔ NPI 1891386843 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
25982 PALA STE 140, Mission Viejo, CA 92691
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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)

Hosseini Md Medical 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 Hosseini MD Medical Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Alireza Hosseini, MD
Endocrinology
NPI 1629324140
25982 PALA STE 140
Mission Viejo, CA 92691
(310) 328-6837
✔ 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 Hosseini MD Medical Inc's NPI number?

The NPI number for Hosseini MD Medical Inc is 1891386843. It was assigned to this organization in the NPPES registry on February 2, 2021.

Where is Hosseini MD Medical Inc located?

Hosseini MD Medical Inc is located at 25982 Pala Ste 140, Mission Viejo, CA 92691. The listed phone number is (949) 407-4404.

What is Hosseini MD Medical Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Hosseini MD Medical Inc enrolled in Medicare?

Yes. Hosseini MD Medical Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Hosseini MD Medical Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Endocrinology) reassigns their Medicare billing to Hosseini MD Medical 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 Hosseini MD Medical Inc was last updated on February 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.