Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Tara Renae Mertz-Hack, MD

Individual provider Family Medicine Physician · NPI 1245641489

Tara Renae Mertz-Hack, MD is registered under Family Practice in Oakes, North Dakota. Graduated from University of North Dakota School of Medicine in 2014, 12 years ago. Practices with Sanford Medical Center Fargo, a 1,212-clinician group and accepts Medicare assignment. Licensed in Idaho.

Years since qualifying
12
Trained at
University of North Dakota School of Medicine
Licensed in
ID
In the registry since
2014
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

420 S 7th St
Oakes, ND 58474-2024
Phone: (701) 742-3267
Fax: (701) 742-3201
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MRM-1396 (ID)

Record details

NPI number1245641489
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 9, 2014
Last updated in NPPESJune 1, 2019

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF NORTH DAKOTA SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Sanford Medical Center Fargo — 1212 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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.

Removal or shaving of skin growth 22 times · 72nd percentile
Removal of skin lesions 32 times · 69th percentile
Colonoscopy 1–10 times
Melanoma (skin cancer) excision 1–10 times
Removal of nail tissue 1–10 times
Skin biopsy 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 times

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 patients586
Services billed 9,339 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 Sanford Medical Center Fargo

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1212 clinicians in the practice; 12 are shown here.

Other providers in Oakes