NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1730137829 MD
Verify on CMS → Kai Tuominen, MD
Emergency Medicine Physician in Maplewood, Minnesota.
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
409
Medicare Part D claims · 103 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
63%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
87.6/100
▲ 4 pts above national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Kai Tuominen, MD reported a CMS MIPS final score of 87.6/100 - above the 83.5 national average - and filed 409 Medicare Part D claims in 2023.
- 87.6/100
- MIPS score · +4 vs avg
- 409
- Part D claims, 2023
- 63%
- 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.
Kai Tuominen, 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.
88 ≥ 52nd percentile 52% 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 Kai Tuominen, MD sits
This provider among emergency medicine physician peers
Across the 14,017 emergency medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Kai Tuominen, MD writes more Part D claims than 89% of them and scores higher on MIPS quality than 40% - placing this provider in the high-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 Kai Tuominen, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Kai Tuominen, 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 Kai Tuominen, MD?
High performer (top quartile)Primary specialty
Emergency Medicine Physician
Medicare Part D claims
409 16% vs specialty avg
MIPS final score
87.6/100 4.1 pts vs avg
Specialty distribution in Minnesota
How Emergency Medicine Physician compares to other specialties among Minnesota providers
Medicare quality performance, MIPS
Kai Tuominen, MD's 2023 MIPS final score plotted against the Emergency Medicine Physician national average
- MIPS Final Score
- 87.6/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Emergency Medicine Physician) - 87.6/100 vs national avg 83.5
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).
Kai Tuominen, MD appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding MD credentials at 2945 HAZELWOOD ST STE 200, Maplewood, MN, 55109, with a listed phone of (651) 471-9400. NPI 1730137829 was issued on 05/04/2006.
Medicare Part D records for calendar year 2023 show 409 prescription claims written by this provider, covering 103 Medicare beneficiaries and totaling roughly $159K in drug spend, split 34% brand-name and 63% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.6/100 for the 2023 performance year (Quality 83.8, Cost 71.6), compared with the 83.5 average among clinicians with a measured score.
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 | 1730137829 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/04/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
87.633
Final Score
Measured-score avg: 83.5
83.7862
Quality
71.5944
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Kai Tuominen, 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.
Healtheast Medical Research Institute
Saint Paul, MN
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 · Above average
Kai Tuominen, MD - brand share 34.0%
Emergency Medicine Physician average
34% brand-name claims vs 63% generic, on 409 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.
409
Total Claims
$159K
Total Drug Cost
103
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 758
- Total Day Supply
- 22,012
- Brand vs Generic
- 34% brand / 63% generic
- Brand Drug Cost
- $144K
- Generic Drug Cost
- $15K
Patient Demographics
- Average Patient Age
- 60.6 years
- Avg HCC Risk Score
- 1.39
- Gender Split
- 76% female / 24% male
- Age Distribution
- <65: 45, 65-74: 48, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kai Tuominen, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ozempic
Ozempic
104 claims
- Naltrexone Hcl
Naltrexone Hcl
102 claims
- Metformin Hcl
Metformin Hcl
42 claims
- Omeprazole 38
Omeprazole
38 claims
- Mounjaro 19
Mounjaro
19 claims
- Famotidine 16
Famotidine
16 claims
- Bupropion Hcl 15
Bupropion Hcl
15 claims
- Pantoprazole Sodium 14
Pantoprazole Sodium
14 claims
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 104 |
| Naltrexone Hcl | 102 |
| Metformin Hcl | 42 |
| Omeprazole | 38 |
| Mounjaro Tirzepatide | 19 |
| Famotidine | 16 |
| Bupropion Hcl | 15 |
| Pantoprazole Sodium | 14 |
* 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 Kai Tuominen, 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
Kai Tuominen, MD's 409 claims are above the specialty average of 352.
Nearby Emergency Medicine Physician Providers in Minnesota
Other clinicians with the same primary specialty enrolled in Minnesota, drawn from the same CMS NPPES roster as Tuominen.
Dr. Suhaib Abaza
MD
Rochester, MN
Dr. Abdihakim Abdullahi
MD
Saint Paul, MN
Dr. Samuel Abelson
MD
Minneapolis, MN
Dr. Deborah Abney Lidahl
MD
Maplewood, MN
Dr. Tiffany Abrahamian
DO
Duluth, MN
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 Minnesota 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.
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Frequently Asked Questions
What is Kai Tuominen, MD's specialty? ▼
Kai Tuominen, MD specializes in Emergency Medicine Physician and practices in Maplewood, Minnesota. Credentials: MD.
How much does Kai Tuominen, MD prescribe under Medicare Part D? ▼
In 2023, Kai Tuominen, MD wrote 409 Medicare Part D claims totaling $159K in drug costs for 103 beneficiaries.
What is Kai Tuominen, MD's Medicare quality score? ▼
Kai Tuominen, MD has a CMS MIPS Final Score of 87.6/100 (Quality: 83.8, Cost: 71.6). 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 Kai Tuominen, MD located? ▼
Kai Tuominen, MD is located at 2945 HAZELWOOD ST STE 200, Maplewood, MN, 55109. Phone: (651) 471-9400.
What is Kai Tuominen, MD's NPI number? ▼
Kai Tuominen, MD's National Provider Identifier (NPI) is 1730137829, issued on 05/04/2006.
Does Kai Tuominen, MD prescribe more brand-name or generic drugs? ▼
Kai Tuominen, MD's prescribing is 34% brand-name and 63% generic drugs by claim count, with $144K in brand drug costs.
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 Kai Tuominen, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Kai Tuominen, MD's most frequently prescribed drugs include Ozempic, Naltrexone Hcl, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kai Tuominen, MD accept Medicare? ▼
Kai Tuominen, MD appears in CMS Medicare data with 409 Part D claims and 103 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kai Tuominen, MD's credentials? ▼
Kai Tuominen, MD's NPI is 1730137829 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.