NIKKI KWOKSAM DUONG MD
NPI 1164884284
Internal Medicine - Hepatology in Palo Alto, CA
About Nikki Kwoksam Duong Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NIKKI KWOKSAM DUONG MD (NPI 1164884284) is an individual hepatology provider in Palo Alto, California, licensed in California (A192254) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Washington, and is a graduate of George Washington University School Of Medicine (2016).
NPPES Registry Identity
Specialties & Licenses 5
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Nikki Kwoksam Duong Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Nikki Duong reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PALO ALTO, CA 94304
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 Nikki Duong's NPI number?
The NPI number for Nikki Duong is 1164884284. It was assigned to this individual provider in the NPPES registry on March 28, 2016.
Where is Nikki Duong located?
Nikki Duong practices at 300 Pasteur Dr, Palo Alto, CA 94304. The listed phone number is (650) 723-4000.
What is Nikki Duong's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hepatology, with taxonomy code 207RI0008X.
Is Nikki Duong enrolled in Medicare?
Yes. Nikki Duong is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Nikki Duong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nikki Duong reassigns Medicare benefits to 2 organizations: Stanford Health Care (Stanford, CA) and Lpch Medical Group Div Of Lucile (Palo Alto, CA). Each 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 Nikki Duong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Nikki Duong was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Nikki Kwoksam Duong, MD · NPI 1164884284
Hepatology physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since March 28, 2016.
## Identity
- **NPI:** 1164884284 (Entity type: Individual)
- **Enumerated:** March 28, 2016
- **Primary specialty:** Internal Medicine - Hepatology · taxonomy 207RI0008X
- **State license:** A192254 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 PASTEUR DR, Palo Alto, CA 94304-2203
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** September 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1164884284) · Data from the CMS NPPES public registry.