Ronald Ortizo

  • Riverside, CA
  • Gastroenterologist
NPI1124405956PAC ID9537435441
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
Social profiles

Primary practice

Riverside Medical Clinic - Brockton/Riverside

Riverside, California

See all 4 affiliations

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.

View contacts for free

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 and contact details
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/Riverside
    7117 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.

See all 4 affiliations for Ronald Ortizo

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.

EHR by site
SiteEHR vendor and product
Riverside Medical Clinic - Brockton/RiversideAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Ronald Ortizo practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.

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, CaliforniaPrimaryLicense A147111 · 2017 to 2026 · taxonomy 207RG0100X

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.

Medicare services, 2024622
Medicare patients262
Paid by Medicare$52,538
Procedure codes7

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.

See all procedures by Ronald Ortizo

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.

Book a meeting

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.

Medicare patients, 2024262
Average age73
Average risk score1.27
Also on Medicaid12%

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

  1. High blood pressure74%
  2. High cholesterol64%
  3. Arthritis37%
  4. Chronic kidney disease33%
  5. Diabetes29%
  6. Mood disorders24%
  7. Depression22%
  8. 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.

Part D claims, 20241,554
Drugs named by CMS24
Total drug cost$86,460
Part D patients590

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.

See all prescribing by Ronald Ortizo

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)

For MedTech and pharma teams

Find gastroenterologists like Ronald Ortizo by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

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.

Papers4
Years published2020 to 2022

Ronald Ortizo's most frequent co-authors

Recent publications by Ronald Ortizo

See all 4 publications and co-authors

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.

How network discovery works

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.

See all payments to Ronald Ortizo

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.

  1. Medical schoolGeorge Washington University School of Medicine and Health Sciences
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of 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

  1. PPO8
  2. Medicare7
  3. HMO6
  4. POS5
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Ronald Ortizo's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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.

Selling to gastroenterology practices?

See gastroenterologists in California by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)