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

Individual provider Internal Medicine Physician · NPI 1811953987

William T Katsiyiannis, MD is a Cardiac Electrophysiology in Minneapolis, Minnesota. Qualified in 1996, 30 years ago. Practices with Allina Health System, a 3,867-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Minnesota.

Years since qualifying
30
Licensed in
MN
In the registry since
2006
Specialties on file
3
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

800 E 28th St
Minneapolis, MN 55407-3723
Phone: (612) 775-3030
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Cardiac Electrophysiology Physician (primary) Taxonomy 207RC0001X · Licence 46466 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 46466 (MN)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 46466 (MN)

Record details

NPI number1811953987
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 26, 2006
Last updated in NPPESMarch 11, 2021
Certification dateMarch 11, 2021

Medicare enrollment

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

Medicare specialtyCARDIAC ELECTROPHYSIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY), INTERNAL MEDICINE
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Allina Health System — 3867 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations12 on file with Medicare

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