STEFANIE T. CHU MD
NPI 1821207796
Internal Medicine in Newark, CA
About Stefanie T. Chu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEFANIE T. CHU MD (NPI 1821207796) is an individual internal medicine provider in Newark, California, licensed in California (A96462) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1998).
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 and accepts Medicare assignment
Stefanie T. Chu 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 Stefanie Chu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1043354020 (California), NPI 1629301346 (California)
- 2,460 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94560 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWARK, CA 94560
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 Stefanie Chu's NPI number?
The NPI number for Stefanie Chu is 1821207796. It was assigned to this individual provider in the NPPES registry on May 21, 2007.
Where is Stefanie Chu located?
Stefanie Chu practices at 6066 Civic Terrace Ave, Newark, CA 94560. The listed phone number is (510) 505-1600.
What is Stefanie Chu's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Stefanie Chu enrolled in Medicare?
Yes. Stefanie Chu 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 Stefanie Chu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stefanie Chu reassigns Medicare benefits to 2 organizations: Alameda Health System (Newark, CA) and County Of Santa Clara (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 Stefanie Chu'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 Stefanie Chu was last updated on September 26, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Stefanie T. Chu, MD · NPI 1821207796
Internal Medicine physician in Newark, California. Individual provider, active in the CMS NPPES registry since May 21, 2007.
## Identity
- **NPI:** 1821207796 (Entity type: Individual)
- **Enumerated:** May 21, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A96462 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 6066 CIVIC TERRACE AVE, Newark, CA 94560-3746
- **Phone:** (510) 505-1600
## 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): Alameda Health System (NPI 1497956288, Newark, CA); County Of Santa Clara (NPI 1285228080, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** September 26, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1821207796) · Data from the CMS NPPES public registry.