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

Mr. Dionisio James Mariano, MD

Individual provider Clinical Cardiac Electrophysiology Physician · NPI 1649220229

Mr. Dionisio James Mariano, MD is a Cardiac Electrophysiology in Appleton, Wisconsin. Graduated from Mayo Medical School in 1985, 41 years ago. Practices with Ascension Medical Group-Fox Valley Wisconsin, Inc, a 260-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
41
Trained at
Mayo Medical School
Licensed in
WI
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

5045 W Grande Market Dr
Appleton, WI 54913-8517
Phone: (920) 886-9380
Fax: (920) 886-9381
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Cardiac Electrophysiology Physician (primary) Taxonomy 207RC0001X · Licence 33293-020 (WI)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 33293-020 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 33293-020 (WI)

Record details

NPI number1649220229
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 12, 2006
Last updated in NPPESMarch 16, 2020
Certification dateMarch 16, 2020

Medicare enrollment

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

Medicare specialtyCARDIAC ELECTROPHYSIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolMAYO MEDICAL SCHOOL
Graduated 1985 (41 years in practice)
Group practice Ascension Medical Group-Fox Valley Wisconsin, Inc — 260 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Appleton