DR. DORTHA TAO-YI CHU MD., PHD,
NPI 1629227251
Surgery - Surgical Oncology in Valencia, CA
About Dr. Dortha Tao-yi Chu Md., Phd, NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DORTHA TAO-YI CHU MD., PHD, (NPI 1629227251) is an individual surgical oncology provider in Valencia, California, licensed in California (A86342) and active in the NPI registry since September 2008. She is enrolled in Medicare PECOS, maintains a secondary practice location in Van Nuys, and is a graduate of Washington University School Of Medicine (2002).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 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
Dr. Dortha Tao-yi Chu Md., Phd, 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 Dortha Chu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Duarte, CA 91010
- Reassigned Medicare billing, California enrollment
- 1,335 clinicians in this Medicare group
Fresno, CA 93720
- Reassigned Medicare billing, California enrollment
- 15 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
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 91355 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.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
VALENCIA, CA 91355
SANTA CLARITA, CA 91355
SANTA CLARITA, CA 91355
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 Dortha Chu's NPI number?
The NPI number for Dortha Chu is 1629227251. It was assigned to this individual provider in the NPPES registry on September 18, 2008.
Where is Dortha Chu located?
Dortha Chu practices at 25425 Orchard Village Rd Ste 150, Valencia, CA 91355. The listed phone number is (661) 467-2371.
What is Dortha Chu's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.
Is Dortha Chu enrolled in Medicare?
Yes. Dortha 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 Dortha Chu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dortha Chu reassigns Medicare benefits to 2 organizations: City Of Hope Medical Foundation (Duarte, CA) and Cancer Therapy Medical Group Inc (Fresno, 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 Dortha 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 Dortha Chu was last updated on March 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Dortha Tao-Yi Chu, MD., PHD, · NPI 1629227251
Surgical Oncology physician in Valencia, California. Individual provider, active in the CMS NPPES registry since September 18, 2008.
## Identity
- **NPI:** 1629227251 (Entity type: Individual)
- **Enumerated:** September 18, 2008
- **Primary specialty:** Surgery - Surgical Oncology · taxonomy 2086X0206X
- **State license:** A86342 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 25425 ORCHARD VILLAGE RD STE 150, Valencia, CA 91355-2959
- **Phone:** (661) 467-2371 · **Fax:** (661) 753-8647
## 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): City Of Hope Medical Foundation (NPI 1871886366, Duarte, CA); Cancer Therapy Medical Group Inc (NPI 1659381549, Fresno, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Washington University School Of Medicine, class of 2002
## Record status
- **NPPES last updated:** March 28, 2023
- **Other identifiers:** Medicaid 0765638 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1629227251) · Data from the CMS NPPES public registry.