NPI registry status
Active
2026 NPPES data Specialist NPI 1275694648 MD
Verify on CMS → Terrence Tuominen, MD
Specialist in Ashland, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,608 in Specialist, 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
621
Medicare Part D claims · 217 beneficiaries · Specialist avg: 1K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
89.7/100
▲ 7 pts above national avg 83.1 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Terrence Tuominen, MD reported a CMS MIPS final score of 89.7/100 - above the 83.1 national average - and filed 621 Medicare Part D claims in 2023.
- 89.7/100
- MIPS score · +7 vs avg
- 621
- Part D claims, 2023
- 95%
- generic prescribing
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.
Terrence Tuominen, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
90 Top 42% higher than 58% 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 Terrence Tuominen, MD sits
This provider among specialist peers
Across the 4,869 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Terrence Tuominen, MD writes more Part D claims than 42% of them and scores higher on MIPS quality than 67% - placing this provider in the lower-volume, high-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 specialist peer from a representative sample of 60; the gold marker is Terrence Tuominen, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Terrence Tuominen, MD?
High performer (top quartile)Primary specialty
Specialist
Medicare Part D claims
621 58% vs specialty avg
MIPS final score
89.7/100 6.6 pts vs avg
Specialty distribution in Wisconsin
How Specialist compares to other specialties among Wisconsin providers
Medicare quality performance, MIPS
Terrence Tuominen, MD's 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 89.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Specialist) - 89.7/100 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).
Terrence Tuominen, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 1615 MAPLE LN, Ashland, WI, 54806, with a listed phone of (715) 685-6010. NPI 1275694648 was issued on 12/12/2006.
Medicare Part D records for calendar year 2023 show 621 prescription claims written by this provider, covering 217 Medicare beneficiaries and totaling roughly $84K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 3.7%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 89.7/100 for the 2023 performance year (Quality 81.2), compared with the national average of 83.1.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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 | 1275694648 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/12/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
89.6808
Final Score
Avg: 83.1
81.2378
Quality
100
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Generic-heavy
Terrence Tuominen, MD - brand share 5.0%
Specialist average
5% brand-name claims vs 95% generic, on 621 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.
621
Total Claims
$84K
Total Drug Cost
217
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 750
- Total Day Supply
- 16,133
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $72K
- Generic Drug Cost
- $12K
- Opioid Claims
- 23 (3.7% rate)
- Antibiotic Claims
- 125
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 30, 65-74: 98, 75-84: 62, 85+: 27
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Terrence Tuominen, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Fluticasone Propio…
Fluticasone Propionate
99 claims
- Prednisone
Prednisone
59 claims
- Omeprazole 38
Omeprazole
38 claims
- Cephalexin 35
Cephalexin
35 claims
- Ipratropium Bromide 31
Ipratropium Bromide
31 claims
- Azelastine Hcl 29
Azelastine Hcl
29 claims
- Cefdinir 26
Cefdinir
26 claims
- Montelukast Sodium 26
Montelukast Sodium
26 claims
| Drug | Claims |
|---|---|
| Fluticasone Propionate | 99 |
| Prednisone | 59 |
| Omeprazole | 38 |
| Cephalexin | 35 |
| Ipratropium Bromide | 31 |
| Azelastine Hcl | 29 |
| Cefdinir | 26 |
| Montelukast Sodium | 26 |
| Levofloxacin | 21 |
| Dupixent Pen Dupilumab | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Terrence Tuominen, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Terrence Tuominen, MD's 621 claims are below the specialty average of 1,474.
Nearby Specialist Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Tuominen.
Dr. Perla Agpoon
M.D.
Waukesha, WI
Dr. Virginia Aguilar-Sincaban
MD
Madison, WI
Dr. Maqsood Ahmad
M.D
Milwaukee, WI
Dr. Richard Ahn
M.D.
Tomah, WI
Ghadeer Alafifi
Madison, WI
Compare Specialist 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 Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Specialist 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 Terrence Tuominen, MD's specialty? ▼
Terrence Tuominen, MD specializes in Specialist and practices in Ashland, Wisconsin. Credentials: MD.
How much does Terrence Tuominen, MD prescribe under Medicare Part D? ▼
In 2023, Terrence Tuominen, MD wrote 621 Medicare Part D claims totaling $84K in drug costs for 217 beneficiaries.
What is Terrence Tuominen, MD's Medicare quality score? ▼
Terrence Tuominen, MD has a CMS MIPS Final Score of 89.7/100 (Quality: 81.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Terrence Tuominen, MD located? ▼
Terrence Tuominen, MD is located at 1615 MAPLE LN, Ashland, WI, 54806. Phone: (715) 685-6010.
What is Terrence Tuominen, MD's NPI number? ▼
Terrence Tuominen, MD's National Provider Identifier (NPI) is 1275694648, issued on 12/12/2006.
Does Terrence Tuominen, MD prescribe more brand-name or generic drugs? ▼
Terrence Tuominen, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $72K in brand drug costs.
Does Terrence Tuominen, MD prescribe opioids? ▼
Yes, Terrence Tuominen, MD had 23 opioid claims in 2023 with an opioid prescribing rate of 3.7%.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Terrence Tuominen, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Terrence Tuominen, MD's most frequently prescribed drugs include Fluticasone Propionate, Prednisone, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Terrence Tuominen, MD accept Medicare? ▼
Terrence Tuominen, MD appears in CMS Medicare data with 621 Part D claims and 217 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Terrence Tuominen, MD's credentials? ▼
Terrence Tuominen, MD's NPI is 1275694648 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.