J Gastroenterol Hepatol
Ronald Ortizo
- Medicare services, 2024
- 622
- Medicare patients, 2024
- 262
- Part D claims, 2024
- 1,554
- Publications
- 4
- Hospital affiliations
- 1
- Practice address
- 7117 Brockton Ave, Riverside, CA 92506
- Practice phone
- Call (951) 683-6370
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverside Medical Clinic - Brockton/Riverside
Riverside, California
Find Ronald Ortizo's 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.
Ronald Ortizo is a gastroenterologist in Riverside, California
Ronald Ortizo practices at Riverside Medical Clinic - Brockton/Riverside in Riverside, California.
Ronald Ortizo's NPI, 1124405956, was assigned on April 30, 2015. Ronald Ortizo graduated from George Washington University School of Medicine and Health Sciences in 2015. Ronald Ortizo holds California license A147111.
- NPI
- 1124405956NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537435441
- NPI enumeration date
- April 30, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 683-6370
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Ronald Ortizo practices at Riverside Medical Clinic - Brockton/Riverside in Riverside, California
Ronald Ortizo's primary practice is Riverside Medical Clinic - Brockton/Riverside, at 7117 Brockton Ave, Riverside, CA 92506 in Riverside County. The practice phone is (951) 683-6370.
- Riverside Medical Clinic - Brockton/Riverside7117 Brockton Ave, Riverside, CA 92506 · Riverside CountyPhone(951) 683-6370
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Ronald Ortizo is affiliated with 3 sites of care and 1 medical group
Ronald Ortizo's primary practice is Riverside Medical Clinic - Brockton/Riverside in Riverside, California. Ronald Ortizo is also affiliated with Riverside Community Hospital. The medical group on file is Riverside Medical Clinic. Dmand AI also links Ronald Ortizo to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Ronald Ortizo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ronald Ortizo practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Medical Clinic - Brockton/Riverside | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Ronald Ortizo is one of 1,977 gastroenterologists in California
Gastroenterology is Ronald Ortizo's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Ronald Ortizo is board certified in gastroenterology by the American Board of Internal Medicine. Ronald Ortizo is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, gastrointestinal bleeding, hemorrhoids, intestinal diverticulosis and irritable bowel syndrome (IBS) among the conditions Ronald Ortizo treats.
Gastroenterologists near Ronald Ortizo
Counts of gastroenterologists 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
Ronald Ortizo billed Medicare for 622 services in 2024
CMS data shows 622 Medicare services from Ronald Ortizo across 7 procedure codes in 2024, for 262 Medicare patients. Medicare paid $52,538 for them.
Ronald Ortizo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 4152024: 34118%
- Office and hospital visits
- 2023: 1852024: 16212%
- Other services
- 2023: 862024: 11938%
Where Ronald Ortizo's Medicare services took place, 2024
- In an office16226%
- In a facility46074%
Ronald Ortizo compared with the California median for gastroenterologists, 2024
- Ronald Ortizo
- California median
- Medicare services
- 622vs 5866% above
- Medicare patients
- 262vs 30213% below
- Part D claims
- 1,413vs 3803.7 times
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Ronald Ortizo's 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.
Need commercial claims for Ronald Ortizo?
Medicare shows one payer. Book a meeting to get commercial claims data for Ronald Ortizo and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Ronald Ortizo treated 262 Medicare patients in 2024, average age 73
CMS counts 262 Medicare patients who saw Ronald Ortizo in 2024. The largest group is 65 to 74, with 151 patients. 74% of them have high blood pressure, and 64% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ronald Ortizo's median patient age at 64, with 57% women.
Ronald Ortizo's Medicare patients by age, 2024
Ronald Ortizo's Medicare patients by sex, 2024
- Women15760%
- Men10540%
Chronic conditions among Ronald Ortizo's Medicare patients, 2024
- High blood pressure74%
- High cholesterol64%
- Arthritis37%
- Chronic kidney disease33%
- Diabetes29%
- Mood disorders24%
- Depression22%
- Ischemic heart disease19%
Share of Medicare patients with each condition. A patient can have several.
Ronald Ortizo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ronald Ortizo wrote 1,554 Medicare Part D claims in 2024
In 2024, Ronald Ortizo wrote 1,554 Medicare Part D claims for 590 patients. 91% of them were for generic drugs. CMS names the drug for 1,413 of them, across 24 drugs with 11 or more claims each, at $86,460 in total drug cost. In 2023, CMS named 1,600 claims across 25 drugs.
Ronald Ortizo's Part D claims by kind of drug, 2024
- Generic1,417 claims91%
- Brand-name137 claims9%
Ronald Ortizo's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Ronald Ortizo's Part D claims, 2024
- Antibiotics3%50 of 1,554 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6002024: 1,41312%
Drugs named by CMS: 24 in 2024, 25 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Ronald Ortizo ranks in the 69th percentile for colonoscopy in Medicare
Ronald Ortizo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 64 procedures of colonoscopy by Ronald Ortizo, more than 69% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Ronald Ortizo ranks in Medicare procedure volume
- Colonoscopy
- 69th percentile64 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 60th percentile41 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Ronald Ortizo has 4 publications on record
Dmand AI links 4 papers to Ronald Ortizo, published from 2020 to 2022. Ronald Ortizo's most frequent co-authors are Jason Buddika Samarasena, MD, Kyle Joshua Fortinsky, MD and Farid Jalali, MD.
Ronald Ortizo's most frequent co-authors
- Jason Buddika Samarasena, MD2 shared papers
- Kyle Joshua Fortinsky, MD1 shared paper
- Farid Jalali, MD1 shared paper
Recent publications by Ronald Ortizo
Eur J Gastroenterol Hepatol
See who Ronald Ortizo researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Ronald Ortizo works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Ronald Ortizo received $57 in industry payments in 2025
CMS Open Payments shows 2 general payments to Ronald Ortizo from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Celltrion USA Inc. paid the most, $42.
Companies that paid Ronald Ortizo the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Ronald Ortizo graduated from George Washington University School of Medicine and Health Sciences
Ronald Ortizo graduated from George Washington University School of Medicine and Health Sciences in 2015.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Ronald Ortizo accepts plans from 13 insurance carriers
Ronald Ortizo is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Ronald Ortizo accepts, by number of carriers
- PPO8
- Medicare7
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Ronald Ortizo'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 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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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)Doctors and Clinicians Utilization Data (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 Ronald Ortizo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ronald Ortizo's NPI number?
Ronald Ortizo's NPI number is 1124405956. It was assigned on April 30, 2015, and it is active in the NPI Registry.
What does Ronald Ortizo specialize in?
Ronald Ortizo is a gastroenterologist in Riverside, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Ronald Ortizo practice?
Ronald Ortizo practices at 7117 Brockton Ave, Riverside, CA 92506. Ronald Ortizo's primary practice is Riverside Medical Clinic - Brockton/Riverside in Riverside, California. Dmand AI also links Ronald Ortizo to 1 group practice or clinic.
What is Ronald Ortizo's office phone number?
The practice phone on file for Ronald Ortizo is (951) 683-6370.
What is Ronald Ortizo's medical license number?
Ronald Ortizo holds California license A147111.
Which hospitals is Ronald Ortizo affiliated with?
Ronald Ortizo is affiliated with Riverside Community Hospital.
What medical group is Ronald Ortizo part of?
Ronald Ortizo is linked to Riverside Medical Clinic.
Does Ronald Ortizo accept Medicare?
Yes. CMS data shows Ronald Ortizo billed Medicare for 622 services in 2024, and Ronald Ortizo accepts Medicare assignment.
How many Medicare patients does Ronald Ortizo see?
CMS counts 262 Medicare patients who saw Ronald Ortizo in 2024, with an average age of 73.
Is Ronald Ortizo board certified?
Yes. Ronald Ortizo is board certified in gastroenterology by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Ronald Ortizo bill to Medicare?
In 2024, Ronald Ortizo's most billed Medicare services were surgery: digestive system (45380), surgery: digestive system (45385) and medicare service (G0500).
Where did Ronald Ortizo go to medical school?
Ronald Ortizo graduated from George Washington University School of Medicine and Health Sciences in 2015.
What drugs does Ronald Ortizo prescribe most?
In 2024 Medicare Part D data, Ronald Ortizo's most prescribed drugs by claims were Omeprazole, Famotidine and Gavilyte-C.
Has Ronald Ortizo received payments from drug or device companies?
CMS Open Payments shows $57 in general payments to Ronald Ortizo from 2 companies from 2025 to 2025. The largest total came from Celltrion USA Inc.
How long has Ronald Ortizo been practicing?
Ronald Ortizo graduated from medical school in 2015, 11 years ago.
Does Ronald Ortizo do research?
Dmand AI links 4 publications to Ronald Ortizo, published from 2020 to 2022.
Who does Ronald Ortizo publish with?
Ronald Ortizo's most frequent co-authors are Jason Buddika Samarasena, MD (2 shared papers), Kyle Joshua Fortinsky, MD (1 shared paper) and Farid Jalali, MD (1 shared paper).
What insurance does Ronald Ortizo accept?
Ronald Ortizo is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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