Dr. Ronaldo Dario Gnass, MD
- Medicare services, 2024
- 53
- Medicare patients, 2024
- 44
- Publications
- 3
- MIPS score, 2024
- 89
- Hospital affiliations
- 1
- Practice address
- 26520 Cactus Ave, Moreno Valley, CA 92555
- Practice phone
- Call (951) 486-4458
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverside University Medical Center
Moreno Valley, California
Find Dr. Gnass' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ronaldo Dario Gnass is a pathologist in Moreno Valley, California
Dr. Gnass practices at Riverside University Medical Center in Moreno Valley, California.
Dr. Gnass' NPI, 1922471895, was assigned on November 2, 2015. Dr. Gnass graduated from Universidad Nacional de Rosario Faculty of Medicine in 1982. Dr. Gnass holds California license A103463.
- NPI
- 1922471895NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042593048
- NPI enumeration date
- November 2, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 486-4458
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ronaldo Dario Gnass practices at Riverside University Medical Center in Moreno Valley, California
Dr. Gnass' primary practice is Riverside University Medical Center, at 26520 Cactus Ave, Moreno Valley, CA 92555 in Riverside County. The practice phone is (951) 486-4458.
- Riverside University Medical Center26520 Cactus Ave, Moreno Valley, CA 92555 · Riverside CountyPhone(951) 486-4458
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ronaldo Dario Gnass is affiliated with 2 sites of care and 2 medical groups
Dr. Gnass' primary practice is Riverside University Medical Center in Moreno Valley, California. Dr. Gnass is also affiliated with Riverside University Health System - Medical Center. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Gnass to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ronaldo Dario Gnass' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gnass practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside University Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronaldo Dario Gnass is one of 297 pathologists in California
Anatomic pathology is Dr. Gnass' primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. Dr. Gnass is board certified in anatomic pathology by the American Board of Pathology. Dmand AI has Dr. Gnass' licenses on file in 2 states: California and Pennsylvania.
Specialties and state licenses
- Anatomic pathology, CaliforniaPrimary
- Pennsylvania license
Pathologists near Dr. Gnass
Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ronaldo Dario Gnass billed Medicare for 53 services in 2024
CMS data shows 53 Medicare services from Dr. Gnass across 1 procedure code in 2024, for 44 Medicare patients. Medicare paid $1,504 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gnass' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 942024: 5344%
Dr. Gnass compared with the California median for pathologists, 2024
- Dr. Gnass
- California median
- Medicare services
- 53vs 67892% below
- Medicare patients
- 44vs 24182% below
Medians across 211 pathologists in California with Dmand AI profiles that report each measure.
Dr. Gnass' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronaldo Dario Gnass treated 44 Medicare patients in 2024, average age 70
CMS counts 44 Medicare patients who saw Dr. Gnass in 2024. The largest group is 65 to 74, with 21 patients. 75% of them have high blood pressure, and 59% have high cholesterol. 73% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Gnass' median patient age at 58, with 63% women.
Dr. Gnass' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gnass' Medicare patients by sex, 2024
- Women2455%
- Men2045%
Chronic conditions among Dr. Gnass' Medicare patients, 2024
- High blood pressure75%
- High cholesterol59%
- Arthritis48%
- Cancer45%
- Chronic kidney disease39%
- Diabetes39%
- Mood disorders34%
- Depression32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gnass' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ronaldo Dario Gnass scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Gnass for performance year 2024, reported as part of a group. Dr. Gnass accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Gnass' MIPS scores, performance year 2024
- 89of 100Final score
- 72.1of 100Quality
- 80of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ronaldo Dario Gnass has 3 publications on record
Dmand AI links 3 papers to Dr. Gnass, published from 2020 to 2023. Dr. Gnass' most frequent co-authors are Juston Fan, DO, Aubree Goodman, DO and Michael Kenneth Mesisca, DO.
Dr. Gnass' papers by year, 2020 to 2023
Dr. Gnass' most frequent co-authors
- Juston Fan, DO2 shared papers
- Aubree Goodman, DO1 shared paper
- Michael Kenneth Mesisca, DO1 shared paper
Recent publications by Dr. Gnass
Pathology
See who Dr. Gnass researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gnass works with, so you can find a warm path to the right pathologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ronaldo Dario Gnass received $130 in industry payments from 2021 to 2025
CMS Open Payments shows 7 general payments to Dr. Gnass from 2 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $105.
General payments to Dr. Gnass by program year, 2021 to 2025
Companies that paid Dr. Gnass the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ronaldo Dario Gnass graduated from Universidad Nacional de Rosario Faculty of Medicine
Dr. Gnass graduated from Universidad Nacional de Rosario Faculty of Medicine in 1982.
- Medical school
- Board certified in anatomic pathology
Source: Dmand AI Professional Profile Data
Dr. Ronaldo Dario Gnass accepts plans from 2 insurance carriers
Dr. Gnass is in network with 2 carriers, including Molina and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Molina
- CMS Medicare
Plan types Dr. Gnass accepts, by number of carriers
- Medicare2
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ronaldo Dario Gnass's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ronaldo Dario Gnass
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ronaldo Dario Gnass' NPI number?
Dr. Ronaldo Dario Gnass' NPI number is 1922471895. It was assigned on November 2, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronaldo Dario Gnass?
Dr. Ronaldo Dario Gnass is a pathologist in Moreno Valley, California. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).
Where does Dr. Ronaldo Dario Gnass practice?
Dr. Gnass practices at 26520 Cactus Ave, Moreno Valley, CA 92555. Dr. Gnass' primary practice is Riverside University Medical Center in Moreno Valley, California. Dmand AI also links Dr. Gnass to 1 medical group.
What is Dr. Ronaldo Dario Gnass' office phone number?
The practice phone on file for Dr. Gnass is (951) 486-4458.
What is Dr. Ronaldo Dario Gnass' medical license number?
Dr. Gnass holds California license A103463, one of the licenses on file in 2 states.
Which states has Dr. Ronaldo Dario Gnass been licensed in?
Dmand AI has state licenses on file for Dr. Gnass in California (2008 to 2027) and Pennsylvania (1996).
Which hospitals is Dr. Ronaldo Dario Gnass affiliated with?
Dr. Gnass is affiliated with Riverside University Health System - Medical Center.
What medical group is Dr. Ronaldo Dario Gnass part of?
Dr. Gnass is linked to Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI links Dr. Gnass to 1 more medical group.
Does Dr. Ronaldo Dario Gnass accept Medicare?
Yes. CMS data shows Dr. Gnass billed Medicare for 53 services in 2024, and Dr. Gnass accepts Medicare assignment.
What is Dr. Ronaldo Dario Gnass' MIPS score?
Dr. Gnass' MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Ronaldo Dario Gnass see?
CMS counts 44 Medicare patients who saw Dr. Gnass in 2024, with an average age of 70.
Is Dr. Ronaldo Dario Gnass board certified?
Yes. Dr. Gnass is board certified in anatomic pathology by the American Board of Pathology.
What services does Dr. Ronaldo Dario Gnass bill to Medicare?
In 2024, Dr. Gnass' most billed Medicare services were lab and pathology test (88305).
Where did Dr. Ronaldo Dario Gnass go to medical school?
Dr. Gnass graduated from Universidad Nacional de Rosario Faculty of Medicine in 1982.
Has Dr. Ronaldo Dario Gnass received payments from drug or device companies?
CMS Open Payments shows $130 in general payments to Dr. Gnass from 2 companies from 2021 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Ronaldo Dario Gnass been practicing?
Dr. Gnass graduated from medical school in 1982, 44 years ago.
Does Dr. Ronaldo Dario Gnass do research?
Dmand AI links 3 publications to Dr. Gnass, published from 2020 to 2023.
Who does Dr. Ronaldo Dario Gnass publish with?
Dr. Gnass' most frequent co-authors are Juston Fan, DO (2 shared papers), Aubree Goodman, DO (1 shared paper) and Michael Kenneth Mesisca, DO (1 shared paper).
What insurance does Dr. Ronaldo Dario Gnass accept?
Dr. Gnass is in network with 2 carriers, including Molina and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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