JOHN LEY M.D.
NPI 1811290679
Anesthesiology in Los Angeles, CA
About John Ley M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN LEY M.D. (NPI 1811290679) is an individual anesthesiology provider in Los Angeles, California, licensed in California (A111233) and active in the NPI registry since December 2010. He is enrolled in Medicare PECOS and is a graduate of Toledo Medical College (2006).
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
John Ley M.d. 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 John Ley reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chino Hills, CA 91709
- Reassigned Medicare billing, California enrollment
- 5,228 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.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
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 John Ley's NPI number?
The NPI number for John Ley is 1811290679. It was assigned to this individual provider in the NPPES registry on December 15, 2010.
Where is John Ley located?
John Ley practices at 4650 W Sunset Blvd # 3, Los Angeles, CA 90027. The listed phone number is (323) 251-6274.
What is John Ley's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Ley enrolled in Medicare?
Yes. John Ley 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 John Ley's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Ley reassigns Medicare benefits to Southern California Permanente Medical Group (Chino Hills, 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 John Ley'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 John Ley was last updated on November 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# John Ley, M.D. · NPI 1811290679
Anesthesiology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since December 15, 2010.
## Identity
- **NPI:** 1811290679 (Entity type: Individual)
- **Enumerated:** December 15, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A111233 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4650 W SUNSET BLVD # 3, Los Angeles, CA 90027-6062
- **Phone:** (323) 251-6274
## 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:** Southern California Permanente Medical Group (NPI 1396287082, Chino Hills, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Toledo Medical College, class of 2006
## Record status
- **NPPES last updated:** November 18, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1811290679) · Data from the CMS NPPES public registry.