Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Ronald R Castonguay, MD

Individual provider Specialist · NPI 1154467074

Ronald R Castonguay, MD is an Orthopedic Surgery in Fresno, California. Qualified in 1990, 36 years ago. Practices with Saint Agnes Medical Foundation, a 162-clinician group and accepts Medicare assignment.

Years since qualifying
36
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7255 N Cedar Ave
Fresno, CA 93720-3831
Phone: (559) 431-5353
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X

Record details

NPI number1154467074
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 29, 2007
Last updated in NPPESJune 11, 2009

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Group practice Saint Agnes Medical Foundation — 162 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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