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SUSAN NGUYEN MD INC
NPI 1366959397
Internal Medicine in Greenbrae, CA

Active since December 28, 2017
250 BON AIR RD, GREENBRAE, CA 94904(415) 509-1573 Get Directions Write a Review

NPPES record last updated: December 28, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Susan Nguyen Md Inc NPPES

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

SUSAN NGUYEN MD INC (NPI 1366959397) is a healthcare organization registered as an internal medicine in Greenbrae, California and active in the NPI registry since December 2017. The organization lists Susan Nguyen, Owner, as its authorized official.

NPPES Registry Identity

NPI1366959397
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSUSAN NGUYEN MD INC
Location Address250 BON AIR RDGreenbrae, CA 94904-1702
Mailing Address1600 Webster St Apt 405San Francisco, CA 94115-3294 · (415) 509-1573
Phone(415) 509-1573
Organization SubpartNo
Authorized OfficialSusan NguyenOwner · (415) 509-1573
Enumeration DateDecember 28, 2017
✔ NPI 1366959397 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 · A65791
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.
250 BON AIR RD, Greenbrae, CA 94904
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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)

Susan Nguyen Md 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 Susan Nguyen MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Susan Nguyen, MD
Internal Medicine
NPI 1164470696
1770 POST STREET SUITE 324
San Francisco, CA 94115
(650) 455-1363
✔ PECOS✔ Accepts Medicare13 mi

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 Susan Nguyen MD Inc's NPI number?

The NPI number for Susan Nguyen MD Inc is 1366959397. It was assigned to this organization in the NPPES registry on December 28, 2017.

Where is Susan Nguyen MD Inc located?

Susan Nguyen MD Inc is located at 250 Bon Air Rd, Greenbrae, CA 94904. The listed phone number is (415) 509-1573.

What is Susan Nguyen MD Inc's specialty?

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

Is Susan Nguyen MD Inc enrolled in Medicare?

Yes. Susan Nguyen MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Susan Nguyen MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Susan Nguyen MD 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 Susan Nguyen MD Inc was last updated on December 28, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.