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

Dr. Annie Laurie Heermans, MD

Individual provider Internal Medicine Physician · NPI 1386098465

Dr. Annie Laurie Heermans, MD practises Gastroenterology in Kalispell, Montana. Graduated from University of North Dakota School of Medicine in 2016, 10 years ago. Practices with The Duluth Clinic Ltd, a 1,127-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Minnesota and Montana.

Years since qualifying
10
Trained at
University of North Dakota School of Medicine
Licensed in
MN, MT
In the registry since
2016
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

320 Sunnyview Ln
Kalispell, MT 59901-3129
Phone: (406) 752-7441
Fax: (406) 257-0304
Show map & directions

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

Additional practice locations (2)

  • 420 E 1st St, Duluth, MN 55805-1901 — (218) 786-8364
  • 982055 Nebraska Medical Ctr, Omaha, NE 68198-2055 — (402) 595-3939

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 79505 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence MED-PHYS-LIC-113414 (MT)
Gastroenterology Physician Taxonomy 207RG0100X · Licence MED-PHYS-LIC-113414 (MT)

Record details

NPI number1386098465
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2016
Last updated in NPPESMay 22, 2025
Certification dateMay 22, 2025

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF NORTH DAKOTA SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice The Duluth Clinic Ltd — 1127 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Upper gastrointestinal (GI) endoscopy for acid reflux 97 times · 76th percentile
Colonoscopy 54 times · 65th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients344
Services billed 541 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 The Duluth Clinic Ltd

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1127 clinicians in the practice; 12 are shown here.

Other providers in Kalispell