RONALDO DARIO GNASS M.D.
NPI 1922471895
Pathology - Anatomic Pathology in Moreno Valley, CA
About Ronaldo Dario Gnass M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RONALDO DARIO GNASS M.D. (NPI 1922471895) is an individual anatomic pathology provider in Moreno Valley, California, licensed in California (A103463) and active in the NPI registry since November 2015. He is enrolled in Medicare PECOS and is a graduate of Other (1982).
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
Ronaldo Dario Gnass 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 Ronaldo Gnass reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Moreno Valley, CA 92555
- Reassigned Medicare billing, California enrollment
- 2,584 clinicians in this Medicare group
Loma Linda, CA 92354
- Reassigned Medicare billing, California enrollment
- 33 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 92555 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.
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.
MORENO VALLEY, CA 92555
MORENO VALLEY, CA 92555
MORENO VALLEY, CA 92555
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 Ronaldo Gnass's NPI number?
The NPI number for Ronaldo Gnass is 1922471895. It was assigned to this individual provider in the NPPES registry on November 2, 2015.
Where is Ronaldo Gnass located?
Ronaldo Gnass practices at 26520 Cactus Ave, Moreno Valley, CA 92555. The listed phone number is (951) 486-5255.
What is Ronaldo Gnass's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.
Is Ronaldo Gnass enrolled in Medicare?
Yes. Ronaldo Gnass 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 Ronaldo Gnass's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ronaldo Gnass reassigns Medicare benefits to 2 organizations: Faculty Physicians And Surgeons Of Llusm (Moreno Valley, CA) and Loma Linda University Pathology Medical Group, Inc. (Loma Linda, 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 Ronaldo Gnass'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 Ronaldo Gnass was last updated on December 13, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Ronaldo Dario Gnass, M.D. · NPI 1922471895
Anatomic Pathology physician in Moreno Valley, California. Individual provider, active in the CMS NPPES registry since November 2, 2015.
## Identity
- **NPI:** 1922471895 (Entity type: Individual)
- **Enumerated:** November 2, 2015
- **Primary specialty:** Pathology - Anatomic Pathology · taxonomy 207ZP0101X
- **State license:** A103463 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 26520 CACTUS AVE, Moreno Valley, CA 92555-3927
- **Phone:** (951) 486-5255 · **Fax:** (951) 486-5270
## 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): Faculty Physicians And Surgeons Of Llusm (NPI 1275191926, Moreno Valley, CA); Loma Linda University Pathology Medical Group, Inc. (NPI 1457398505, Loma Linda, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1982
## Record status
- **NPPES last updated:** December 13, 2016
---
Source: [NPI Profile](https://npiprofile.com/npi/1922471895) · Data from the CMS NPPES public registry.