Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Michael Difronzo

Individual provider Physician Assistant · NPI 1881095107

Michael Difronzo is a Physician Assistant in Colton, California. Registered with an NPI since 2014.

In the registry since
2014
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Practice location Address checks out

400 N Pepper Ave
Colton, CA 92324-1801 Not confirmed with CMS for 10 years — call before visiting
Phone: (909) 580-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X

Record details

NPI number1881095107
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedSeptember 5, 2014
Last updated in NPPESApril 13, 2016

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients191
Services billed 300 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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