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

Individual provider Nephrology Physician · NPI 1992825814

Heather Ann Muster, MD practises Internal Medicine in Duluth, Minnesota. Graduated from University of Minnesota Medical School in 1999, 27 years ago. Practices with Fairview Express Care, a 1,964-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
27
Trained at
University of Minnesota Medical School
Licensed in
MN
In the registry since
2007
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

1001 E Superior St Ste L201
Duluth, MN 55802-2207
Phone: (218) 249-7980
Fax: (218) 249-7911
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 44582 (MN)

Record details

NPI number1992825814
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 2, 2007
Last updated in NPPESApril 10, 2018

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1999 (27 years in practice)
Group practice Fairview Express Care — 1964 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients31
Services billed 75 a service is one billed item, such as a visit, a test or a procedure
Average patient age60

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Fairview Express Care

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1964 clinicians in the practice; 12 are shown here.

Other providers in Duluth