NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1245641489 MD
Verify on CMS → Tara Mertz-Hack, MD
Family Medicine Physician in Oakes, North Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
4K
Medicare Part D claims · 599 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83/100
▼ 1 pts below national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Tara Mertz-Hack, MD reported a CMS MIPS final score of 83/100 - below the 83.5 national average - and filed 4,436 Medicare Part D claims in 2023.
- 83/100
- MIPS score · -1 vs avg
- 4K
- Part D claims, 2023
- 76%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Tara Mertz-Hack, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
83 ≥ 36th percentile 36% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Tara Mertz-Hack, MD sits
This provider among family medicine physician peers
Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Tara Mertz-Hack, MD writes more Part D claims than 64% of them and scores higher on MIPS quality than 37% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Tara Mertz-Hack, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Tara Mertz-Hack, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Tara Mertz-Hack, MD?
Near national averagePrimary specialty
Family Medicine Physician
Medicare Part D claims
4,436 30% vs specialty avg
MIPS final score
83/100 0.5 pts vs avg
Specialty distribution in North Dakota
How Family Medicine Physician compares to other specialties among North Dakota providers
Medicare quality performance, MIPS
Tara Mertz-Hack, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average
- MIPS Final Score
- 83/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Tara Mertz-Hack, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 420 S 7TH ST, Oakes, ND, 58474, with a listed phone of (701) 742-3267. NPI 1245641489 was issued on 05/09/2014.
Medicare Part D records for calendar year 2023 show 4,436 prescription claims written by this provider, covering 599 Medicare beneficiaries and totaling roughly $459K in drug spend, split 24% brand-name and 76% generic by claim count, with an opioid prescribing rate of 1.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83/100 for the 2023 performance year (Quality 87.1, Cost 57.1), compared with the 83.5 average among clinicians with a measured score.
Family Medicine Physician is a high-volume specialty nationwide, with 147,760 enrolled providers across 56 states and an average of 3,418 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1245641489 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/09/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
82.9973
Final Score
Measured-score avg: 83.5
87.0681
Quality
57.0897
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Tara Mertz-Hack, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Sanford Medical Center Fargo
★★★★☆ 4/5
West Fargo, ND
Acute Care Hospitals
CMS CCN: 350011
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Tara Mertz-Hack, MD - brand share 24.0%
Family Medicine Physician average
24% brand-name claims vs 76% generic, on 4,436 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
4,436
Total Claims
$459K
Total Drug Cost
599
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 8,281
- Total Day Supply
- 225,523
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $393K
- Generic Drug Cost
- $65K
- Opioid Claims
- 70 (1.6% rate)
- Antibiotic Claims
- 44
Patient Demographics
- Average Patient Age
- 76.3 years
- Avg HCC Risk Score
- 1.06
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 24, 65-74: 250, 75-84: 223, 85+: 102
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Tara Mertz-Hack, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
288 claims
- Arexvy
Arexvy
200 claims
- Levothyroxine Sodium
Levothyroxine Sodium
179 claims
- Lisinopril
Lisinopril
165 claims
- Losartan Potassium
Losartan Potassium
145 claims
- Omeprazole
Omeprazole
142 claims
- Metoprolol Succinate
Metoprolol Succinate
129 claims
- Amlodipine Besylate
Amlodipine Besylate
116 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 288 |
| Arexvy Rsvpref3 Antigen/As01e/Pf | 200 |
| Levothyroxine Sodium | 179 |
| Lisinopril | 165 |
| Losartan Potassium | 145 |
| Omeprazole | 142 |
| Metoprolol Succinate | 129 |
| Amlodipine Besylate | 116 |
| Metformin Hcl | 112 |
| Shingrix Varicella-Zoster Ge/As01b/Pf | 101 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Tara Mertz-Hack, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Tara Mertz-Hack, MD's 4,436 claims are above the specialty average of 3,418.
Nearby Family Medicine Physician Providers in North Dakota
Other clinicians with the same primary specialty enrolled in North Dakota, drawn from the same CMS NPPES roster as Mertz-Hack.
Dr. Winter Ackerman
MD
Wahpeton, ND
Dr. Tim Adams
MD
Bowman, ND
Dr. Joseph Adamson
MD
Grand Forks Afb, ND
Dr. Boyd Addy
MD
Mandan, ND
Dr. Michelle Adzew-Bossman
MD
Fargo, ND
Compare Family Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the North Dakota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Understanding Medicare Claims Data
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Explore North Dakota
Frequently Asked Questions
What is Tara Mertz-Hack, MD's specialty? ▼
Tara Mertz-Hack, MD specializes in Family Medicine Physician and practices in Oakes, North Dakota. Credentials: MD.
How much does Tara Mertz-Hack, MD prescribe under Medicare Part D? ▼
In 2023, Tara Mertz-Hack, MD wrote 4,436 Medicare Part D claims totaling $459K in drug costs for 599 beneficiaries.
What is Tara Mertz-Hack, MD's Medicare quality score? ▼
Tara Mertz-Hack, MD has a CMS MIPS Final Score of 83/100 (Quality: 87.1, Cost: 57.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Tara Mertz-Hack, MD located? ▼
Tara Mertz-Hack, MD is located at 420 S 7TH ST, Oakes, ND, 58474. Phone: (701) 742-3267.
What is Tara Mertz-Hack, MD's NPI number? ▼
Tara Mertz-Hack, MD's National Provider Identifier (NPI) is 1245641489, issued on 05/09/2014.
Does Tara Mertz-Hack, MD prescribe more brand-name or generic drugs? ▼
Tara Mertz-Hack, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $393K in brand drug costs.
Does Tara Mertz-Hack, MD prescribe opioids? ▼
Yes, Tara Mertz-Hack, MD had 70 opioid claims in 2023 with an opioid prescribing rate of 1.6%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Tara Mertz-Hack, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Tara Mertz-Hack, MD's most frequently prescribed drugs include Atorvastatin Calcium, Arexvy, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tara Mertz-Hack, MD accept Medicare? ▼
Tara Mertz-Hack, MD appears in CMS Medicare data with 4,436 Part D claims and 599 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tara Mertz-Hack, MD's credentials? ▼
Tara Mertz-Hack, MD's NPI is 1245641489 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.