MRS. CRISTINA VALDIVIA FNP MSN
NPI 1649797846
Nurse Practitioner - Family in Rialto, CA
About Mrs. Cristina Valdivia Fnp Msn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. CRISTINA VALDIVIA FNP MSN (NPI 1649797846) is an individual family provider in Rialto, California, licensed in California (95007665) and active in the NPI registry since August 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2017).
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
Mrs. Cristina Valdivia Fnp Msn 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
3Medicare enrollment records show Cristina Valdivia reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rialto, CA 92376
- Reassigned Medicare billing, California enrollment
- 455 clinicians in this Medicare group
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- 149 clinicians in this Medicare group
Corona, CA 92882
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Hesham El Mokadem MD Inc
- 4 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
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 92376 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.
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 Cristina Valdivia's NPI number?
The NPI number for Cristina Valdivia is 1649797846. It was assigned to this individual provider in the NPPES registry on August 28, 2017.
Where is Cristina Valdivia located?
Cristina Valdivia practices at 1851 N Riverside Ave, Rialto, CA 92376. The listed phone number is (909) 874-2371.
What is Cristina Valdivia's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Cristina Valdivia enrolled in Medicare?
Yes. Cristina Valdivia 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 Cristina Valdivia's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cristina Valdivia reassigns Medicare benefits to 3 organizations: Sac Health System (Rialto, CA), Pinnacle Medical Group, Inc (Fontana, CA) and Hesham El Mokadem, M.D., Inc. (Corona, 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 Cristina Valdivia'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 Cristina Valdivia was last updated on March 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months 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.
# Mrs. Cristina Valdivia, FNP MSN · NPI 1649797846
Family physician in Rialto, California. Individual provider, active in the CMS NPPES registry since August 28, 2017.
## Identity
- **NPI:** 1649797846 (Entity type: Individual)
- **Enumerated:** August 28, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95007665 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1851 N RIVERSIDE AVE, Rialto, CA 92376-8069
- **Phone:** (909) 874-2371
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Sac Health System (NPI 1386266112, Rialto, CA); Pinnacle Medical Group, Inc (NPI 1376876912, Fontana, CA); Hesham El Mokadem, M.D., Inc. (NPI 1588012124, Corona, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** March 13, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1649797846) · Data from the CMS NPPES public registry.