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

Mr. Brian Neil Guttormsen, MD

Individual provider Internal Medicine Physician · NPI 1629045232

Mr. Brian Neil Guttormsen, MD is an Interventional Cardiology in Appleton, Wisconsin. Graduated from Medical College of Wisconsin in 2001, 25 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
25
Trained at
Medical College of Wisconsin
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
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Interventional Cardiology Physician (primary) Taxonomy 207RI0011X · Licence 44932 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 44932 (WI)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 44932 (WI)

Record details

NPI number1629045232
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 2, 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 specialtyINTERVENTIONAL CARDIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY), INTERNAL MEDICINE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2001 (25 years in practice)
Group practice Ascension Medical Group-Fox Valley Wisconsin, Inc — 260 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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