NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1558381939 MD
Verify on CMS → Michael Cassidy, MD
Emergency Medicine Physician in Dickinson, 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 64,463 in Emergency 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
87
Medicare Part D claims · 60 beneficiaries · Emergency Medicine Physician avg: 352
MIPS score
73.9/100
▼ 9 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Michael Cassidy, MD reported a CMS MIPS final score of 73.9/100 - below the 83.1 national average - and filed 87 Medicare Part D claims in 2023.
- 73.9/100
- MIPS score · -9 vs avg
- 87
- Part D claims, 2023
- 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.
Michael Cassidy, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
74 11th percentile higher than 11% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Michael Cassidy, MD sits
This provider among emergency medicine physician peers
Across the 14,967 emergency medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Michael Cassidy, MD writes more Part D claims than 29% of them and scores higher on MIPS quality than 8% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one emergency medicine physician peer from a representative sample of 60; the gold marker is Michael Cassidy, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Michael Cassidy, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Michael Cassidy, MD?
Below national averagePrimary specialty
Emergency Medicine Physician
Medicare Part D claims
87 75% vs specialty avg
MIPS final score
73.9/100 9.2 pts vs avg
Specialty distribution in North Dakota
How Emergency Medicine Physician compares to other specialties among North Dakota providers
Medicare quality performance, MIPS
Michael Cassidy, MD's 2023 MIPS final score plotted against the Emergency Medicine Physician national average
- MIPS Final Score
- 73.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Emergency Medicine Physician) - 73.9/100 vs national avg 83.1
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).
Michael Cassidy, MD appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding MD credentials at 2500 FAIRWAY ST, Dickinson, ND, 58601, with a listed phone of (701) 456-4000. NPI 1558381939 was issued on 07/20/2006.
Medicare Part D records for calendar year 2023 show 87 prescription claims written by this provider, covering 60 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 17.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.9/100 for the 2023 performance year (Quality 55.1, Cost 95.3), compared with the national average of 83.1.
Emergency Medicine Physician is a high-volume specialty nationwide, with 64,463 enrolled providers across 56 states and an average of 352 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 | 1558381939 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.8703
Final Score
Avg: 83.1
55.0531
Quality
95.3036
Cost
Reporting: Group practice
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
87
Total Claims
$2K
Total Drug Cost
60
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 88
- Total Day Supply
- 1,144
- Generic Drug Cost
- $771
- Opioid Claims
- 15 (17.2% rate)
- Antibiotic Claims
- 21
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 1.57
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Emergency Medicine Physician Overview
How Michael Cassidy, MD fits within the Emergency Medicine Physician landscape nationally.
64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider
Michael Cassidy, MD's 87 claims are below the specialty average of 352.
Nearby Emergency 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 Cassidy.
Dr. Ryan Agema
MD
Fargo, ND
Dr. Alex Agostini-Miranda
MD
Fargo, ND
Dr. Joan Agwai
M.D.
Minot, ND
Dr. Christopher Anderson
MD
Fargo, ND
Dr. Benito Aubergine
MD
Grand Forks, ND
Compare Emergency 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 Emergency 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.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore North Dakota
Frequently Asked Questions
What is Michael Cassidy, MD's specialty? ▼
Michael Cassidy, MD specializes in Emergency Medicine Physician and practices in Dickinson, North Dakota. Credentials: MD.
How much does Michael Cassidy, MD prescribe under Medicare Part D? ▼
In 2023, Michael Cassidy, MD wrote 87 Medicare Part D claims totaling $2K in drug costs for 60 beneficiaries.
What is Michael Cassidy, MD's Medicare quality score? ▼
Michael Cassidy, MD has a CMS MIPS Final Score of 73.9/100 (Quality: 55.1, Cost: 95.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michael Cassidy, MD located? ▼
Michael Cassidy, MD is located at 2500 FAIRWAY ST, Dickinson, ND, 58601. Phone: (701) 456-4000.
What is Michael Cassidy, MD's NPI number? ▼
Michael Cassidy, MD's National Provider Identifier (NPI) is 1558381939, issued on 07/20/2006.
Does Michael Cassidy, MD prescribe opioids? ▼
Yes, Michael Cassidy, MD had 15 opioid claims in 2023 with an opioid prescribing rate of 17.2%.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does Michael Cassidy, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Cassidy, MD's most frequently prescribed drugs include Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Cassidy, MD accept Medicare? ▼
Michael Cassidy, MD appears in CMS Medicare data with 87 Part D claims and 60 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Cassidy, MD's credentials? ▼
Michael Cassidy, MD's NPI is 1558381939 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
Compiled from official public sources by the PlainDoctor editorial team.
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.