GERARDO GUERRA
NPI 1598224982
Emergency Medicine in Riverside, CA
About Gerardo Guerra NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GERARDO GUERRA (NPI 1598224982) is an individual emergency medicine provider in Riverside, California, licensed in California (A176413) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.
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 (PECOS)
Gerardo Guerra is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Gerardo Guerra reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Riverside, CA 92503
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Riverside, CA 92505
- 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.
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 92501 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.
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
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 Gerardo Guerra's NPI number?
The NPI number for Gerardo Guerra is 1598224982. It was assigned to this individual provider in the NPPES registry on March 15, 2019.
Where is Gerardo Guerra located?
Gerardo Guerra practices at 4445 Magnolia Ave, Riverside, CA 92501. The listed phone number is (562) 458-4035.
What is Gerardo Guerra's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gerardo Guerra enrolled in Medicare?
Yes. Gerardo Guerra is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Gerardo Guerra's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gerardo Guerra reassigns Medicare benefits to 2 organizations: Riverside Emergency Physicians Medical Group (Riverside, CA) and Southern California Permanente Medical Group (Riverside, 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 Gerardo Guerra'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 Gerardo Guerra was last updated on March 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Gerardo Guerra · NPI 1598224982
Emergency Medicine physician in Riverside, California. Individual provider, active in the CMS NPPES registry since March 15, 2019.
## Identity
- **NPI:** 1598224982 (Entity type: Individual)
- **Enumerated:** March 15, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A176413 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4445 MAGNOLIA AVE, Riverside, CA 92501-4135
- **Phone:** (562) 458-4035
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Riverside Emergency Physicians Medical Group (NPI 1972539039, Riverside, CA); Southern California Permanente Medical Group (NPI 1316979834, Riverside, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 25, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1598224982) · Data from the CMS NPPES public registry.