DR. ROSEMARY SANTOS CHEQUER M.D.
NPI 1821068784
Neurological Surgery in Patton, CA
About Dr. Rosemary Santos Chequer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROSEMARY SANTOS CHEQUER M.D. (NPI 1821068784) is an individual neurological surgery provider in Patton, California, licensed in California (A55105) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1972).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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. Rosemary Santos Chequer 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 Rosemary Chequer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 14 clinicians in this Medicare group
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 755 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 92369 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
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 Rosemary Chequer's NPI number?
The NPI number for Rosemary Chequer is 1821068784. It was assigned to this individual provider in the NPPES registry on January 24, 2006.
Where is Rosemary Chequer located?
Rosemary Chequer practices at 3102 E. Highland Avenue Medical Staff Office, Patton, CA 92369. The listed phone number is (909) 425-7679.
What is Rosemary Chequer's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Rosemary Chequer enrolled in Medicare?
Yes. Rosemary Chequer 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 Rosemary Chequer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rosemary Chequer reassigns Medicare benefits to 2 organizations: California University Of Science And Medicine (Colton, CA) and Department Of State Hospitals (Norwalk, 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 Rosemary Chequer'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 Rosemary Chequer was last updated on March 19, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.