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

William Klaus Mai, MD

Individual provider Cardiovascular Disease Physician · NPI 1427632116

William Klaus Mai, MD is a Cardiovascular Disease (Cardiology) in Jacksonville, Florida. Graduated from George Washington University School of Medicine in 2021, 5 years ago. Practices with Mayo Clinic Jacksonville, a 1,581-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Florida.

Years since qualifying
5
Trained at
George Washington University School of Medicine
Licensed in
FL
In the registry since
2021
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

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence ME159160 (FL)

Record details

NPI number1427632116
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 8, 2021
Last updated in NPPESJune 19, 2024
Certification dateJune 19, 2024

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2021 (5 years in practice)
Group practice Mayo Clinic Jacksonville — 1581 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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