WARREN PHAN
NPI 1912830704
Physical Therapist in Diamond Bar, CA
About Warren Phan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WARREN PHAN (NPI 1912830704) is an individual physical therapist in Diamond Bar, California and active in the NPI registry since June 2026. He is a graduate of University Of Southern California Keck School Of Medicine (2026).
NPPES Registry Identity
Specialties & Licenses
- Diagnose and manage movement dysfunction and enhance physical and functional abilities.
- Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health.
- Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries.
- Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems.
- Address the negative effects attributable to unique personal and environmental factors as they relate to human performance.
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
Warren Phan 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 Reassignment
Medicare enrollment records show Warren Phan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Diamond Bar, CA 91765
- 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91765 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 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DIAMOND BAR, CA 91765
DIAMOND BAR, CA 91765
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 Warren Phan's NPI number?
The NPI number for Warren Phan is 1912830704. It was assigned to this individual provider in the NPPES registry on June 3, 2026.
Where is Warren Phan located?
Warren Phan practices at 21015 Pathfinder Rd Ste 100, Diamond Bar, CA 91765. The listed phone number is (909) 861-3511.
What is Warren Phan's specialty?
The primary specialty registered for this NPI is Physical Therapist with taxonomy code 225100000X.
Is Warren Phan enrolled in Medicare?
Yes. Warren Phan 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 organization bills Medicare for Warren Phan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Warren Phan reassigns Medicare benefits to Pomona Valley Orthopedic And Sports Physical Therapy, Inc (Diamond Bar, CA). The 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 Warren Phan'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 Warren Phan was last updated on June 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.