DEREK LIU MD
NPI 1861133563
Internal Medicine in Stanford, CA
About Derek Liu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEREK LIU MD (NPI 1861133563) is an individual internal medicine provider in Stanford, California, licensed in California (A188691) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2022).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Derek Liu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Derek Liu 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Derek Liu's NPI number?
The NPI number for Derek Liu is 1861133563. It was assigned to this individual provider in the NPPES registry on April 5, 2022.
Where is Derek Liu located?
Derek Liu practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Derek Liu's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Derek Liu enrolled in Medicare?
Yes. Derek Liu is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Derek Liu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek Liu 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 Derek Liu'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 Derek Liu was last updated on July 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Derek Liu, MD · NPI 1861133563
Internal Medicine physician in Stanford, California. Individual provider, active in the CMS NPPES registry since April 5, 2022.
## Identity
- **NPI:** 1861133563 (Entity type: Individual)
- **Enumerated:** April 5, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A188691 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for durable medical equipment, 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:** Harvard Medical School, class of 2022
## Record status
- **NPPES last updated:** July 11, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1861133563) · Data from the CMS NPPES public registry.