DR. BILLY LE D.O.
NPI 1255656963
Hospitalist in Fountain Valley, CA
About Dr. Billy Le D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BILLY LE D.O. (NPI 1255656963) is an individual hospitalist provider in Fountain Valley, California, licensed in California (20A11949) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses 2
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. Billy Le D.o. 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 Billy Le reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 clinicians in this Medicare group
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 2,052 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 5
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 92708 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.
FOUNTAIN VALLEY, CA, CA 92708
FOUNTAIN VALLEY, CA 92708
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 Billy Le's NPI number?
The NPI number for Billy Le is 1255656963. It was assigned to this individual provider in the NPPES registry on April 6, 2010.
Where is Billy Le located?
Billy Le practices at 17360 Brookhurst Street Attn: Credentialing Department, Fountain Valley, CA 92708. The listed phone number is (714) 797-1797.
What is Billy Le's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Billy Le enrolled in Medicare?
Yes. Billy Le 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 Billy Le's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Billy Le reassigns Medicare benefits to 2 organizations: Memorialcare Medical Foundation (Fountain Valley, CA) and Healthcare Partners Affiliates Medical Group (Tustin, 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 Billy Le'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 Billy Le was last updated on July 31, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Billy Le, D.O. · NPI 1255656963
Hospitalist physician in Fountain Valley, California. Individual provider, active in the CMS NPPES registry since April 6, 2010.
## Identity
- **NPI:** 1255656963 (Entity type: Individual)
- **Enumerated:** April 6, 2010
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 20A11949 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 17360 BROOKHURST STREET, ATTN: CREDENTIALING DEPARTMENT, Fountain Valley, CA 92708
- **Phone:** (714) 797-1797
## 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): Memorialcare Medical Foundation (NPI 1205167350, Fountain Valley, CA); Healthcare Partners Affiliates Medical Group (NPI 1891981502, Tustin, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** July 31, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1255656963) · Data from the CMS NPPES public registry.