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

John Casler, MD

Individual provider Otolaryngology Physician · NPI 1730183096

John Casler, MD is an Otolaryngology Physician in Jacksonville, Florida. Licensed in Florida. Registered with an NPI since 2005.

Licensed in
FL
In the registry since
2005
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

4500 San Pablo Rd S
Jacksonville, FL 32224-1865
Phone: (904) 953-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Otolaryngology Physician (primary) Taxonomy 207Y00000X · Licence ME100360 (FL)

Record details

NPI number1730183096
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 2, 2005
Last updated in NPPESFebruary 23, 2024
Certification dateFebruary 23, 2024

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 patients19
Services billed 24 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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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