JOHN L. OAKLEY M.D.
NPI 1841233921
Anesthesiology in Pomona, CA
About John L. Oakley M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN L. OAKLEY M.D. (NPI 1841233921) is an individual anesthesiology provider in Pomona, California, licensed in California (A51957) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Stanford University School Of Medicine (1982).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
John L. Oakley 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 Reassignments
2Medicare enrollment records show John Oakley reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Covina, CA 91790
- Reassigned Medicare billing, California enrollment
- 42 clinicians in this Medicare group
- Reassigned Medicare billing, California enrollment
- 420 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
POMONA, CA 91767
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 Oakley's NPI number?
The NPI number for John Oakley is 1841233921. It was assigned to this individual provider in the NPPES registry on June 14, 2006.
Where is John Oakley located?
John Oakley practices at 1798 N Garey Ave, Pomona, CA 91767. The listed phone number is (909) 865-9140.
What is John Oakley's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Oakley enrolled in Medicare?
Yes. John Oakley 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 John Oakley's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Oakley reassigns Medicare benefits to 2 organizations: Citrus Valley Anesthesia Medical Group (West Covina, CA) and Allied Anesthesia Medical Group Inc (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 John Oakley'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 Oakley was last updated on February 19, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 L. Oakley, M.D. · NPI 1841233921
Anesthesiology physician in Pomona, California. Individual provider, active in the CMS NPPES registry since June 14, 2006.
## Identity
- **NPI:** 1841233921 (Entity type: Individual)
- **Enumerated:** June 14, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A51957 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1798 N GAREY AVE, Pomona, CA 91767-2918
- **Phone:** (909) 865-9140
## 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): Citrus Valley Anesthesia Medical Group (NPI 1912920331, West Covina, CA); Allied Anesthesia Medical Group Inc (CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Stanford University School Of Medicine, class of 1982
## Record status
- **NPPES last updated:** February 19, 2015
- **Other identifiers:** Medicare UPIN A51957; Medicaid 00G512830 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1841233921) · Data from the CMS NPPES public registry.