DR. JOHN STEPHEN LOCKE M.D.
NPI 1467520189
Orthopaedic Surgery in Corona, CA
About Dr. John Stephen Locke M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN STEPHEN LOCKE M.D. (NPI 1467520189) is an individual orthopaedic surgery provider in Corona, California, licensed in California (G77841) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1986).
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
Dr. John Stephen Locke 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 Locke reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Corona, CA 92879
- Reassigned Medicare billing, California enrollment
- 10 clinicians in this Medicare group
Murrieta, CA 92563
- Reassigned Medicare billing, California enrollment
- 240 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 3
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 92879 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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
CORONA, CA 92879
CORONA, CA 92879
CORONA, CA 92879
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 Locke's NPI number?
The NPI number for John Locke is 1467520189. It was assigned to this individual provider in the NPPES registry on December 1, 2006.
Where is John Locke located?
John Locke practices at 341 Magnolia Ave Ste 101, Corona, CA 92879. The listed phone number is (951) 735-6060.
What is John Locke's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is John Locke enrolled in Medicare?
Yes. John Locke 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 Locke's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Locke reassigns Medicare benefits to 2 organizations: Corona Orthopaedic Associates Medical Group Inc (Corona, CA) and United Medical Doctors (Murrieta, 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 Locke'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 Locke was last updated on September 21, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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. John Stephen Locke, M.D. · NPI 1467520189
Orthopaedic Surgery physician in Corona, California. Individual provider, active in the CMS NPPES registry since December 1, 2006.
## Identity
- **NPI:** 1467520189 (Entity type: Individual)
- **Enumerated:** December 1, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** G77841 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 341 MAGNOLIA AVE, STE 101, Corona, CA 92879-3330
- **Phone:** (951) 735-6060
## 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): Corona Orthopaedic Associates Medical Group Inc (NPI 1598872657, Corona, CA); United Medical Doctors (NPI 1770559981, Murrieta, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1986
## Record status
- **NPPES last updated:** September 21, 2012
---
Source: [NPI Profile](https://npiprofile.com/npi/1467520189) · Data from the CMS NPPES public registry.