Ronald R. Castonguay, MD
Specialist · Fresno, CA
Ronald R. Castonguay, MD is a specialist with a practice address in Fresno, California, and NPI 1154467074, issued on Jan 29, 2007. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ronald R. Castonguay
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 7255 N Cedar Ave, Fresno, CA 93720
- Phone
- (559) 431-5353
- Enumerated
- Jan 29, 2007
- Record last updated
- Jun 11, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 00A551670 CA
- Medicare enrollment
- Enrolled (PECOS I20080522000645); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 7255 N Cedar Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Mochizuki, M.D.Orthopaedic Surgery Physician1023028883
Verify Ronald R. Castonguay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 72.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,452.83
14 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Saint Agnes Medical FoundationFresno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
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Common questions
What is Ronald R. Castonguay, MD's NPI number?
Ronald R. Castonguay, MD's National Provider Identifier (NPI) is 1154467074, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ronald R. Castonguay, MD located?
The NPPES record lists a practice address at 7255 N Cedar Ave, Fresno, CA, 93720. Phone: (559) 431-5353. Providers update this record themselves, so call before visiting.
How can I verify Ronald R. Castonguay, MD's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Ronald R. Castonguay, MD's MIPS final score?
The 2023 MIPS final score is 72.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.