NPI registry status
Active
2026 NPPES data Foot Surgery Podiatrist NPI 1356361190 D.P.M.
Verify on CMS → Dennis Trenner, D.P.M.
Foot Surgery Podiatrist in Oroville, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,519 in Foot Surgery Podiatrist, 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
389
Medicare Part D claims · 158 beneficiaries · Foot Surgery Podiatrist avg: 342
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.3/100
▼ 10 pts below national avg 83.1 · Mid-tier
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
Dennis Trenner, D.P.M. reported a CMS MIPS final score of 73.3/100 - below the 83.1 national average - and filed 389 Medicare Part D claims in 2023.
- 73.3/100
- MIPS score · -10 vs avg
- 389
- Part D claims, 2023
- 97%
- 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.
Dennis Trenner, D.P.M.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
73 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 Dennis Trenner, D.P.M. sits
This provider among foot surgery podiatrist peers
Across the 457 foot surgery podiatrist providers who report both Medicare Part D prescribing and a MIPS quality score, Dennis Trenner, D.P.M. writes more Part D claims than 70% of them and scores higher on MIPS quality than 36% - 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 foot surgery podiatrist peer from a representative sample of 60; the gold marker is Dennis Trenner, D.P.M.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Dennis Trenner, D.P.M.?
Below national averagePrimary specialty
Foot Surgery Podiatrist
Medicare Part D claims
389 14% vs specialty avg
MIPS final score
73.3/100 9.8 pts vs avg
Specialty distribution in California
How Foot Surgery Podiatrist compares to other specialties among California providers
Medicare quality performance, MIPS
Dennis Trenner, D.P.M.'s 2023 MIPS final score plotted against the Foot Surgery Podiatrist national average
- MIPS Final Score
- 73.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Foot Surgery Podiatrist) - 73.3/100 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).
Dennis Trenner, D.P.M. appears in the CMS NPPES registry as a Foot Surgery Podiatrist provider holding D.P.M. credentials at 2760 ORO DAM BLVD E, Oroville, CA, 95966, with a listed phone of (530) 534-0601. NPI 1356361190 was issued on 07/21/2006.
Medicare Part D records for calendar year 2023 show 389 prescription claims written by this provider, covering 158 Medicare beneficiaries and totaling roughly $15K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 3.9%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.3/100 for the 2023 performance year (Quality 36.9, Cost 57.8), compared with the national average of 83.1.
Foot Surgery Podiatrist is a narrow specialty nationwide, with 1,519 enrolled providers across 53 states and an average of 342 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 | 1356361190 |
|---|---|
| Specialty | Foot Surgery Podiatrist |
| Credentials | D.P.M. |
| Gender | Male |
| NPI Issued | 07/21/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.3427
Final Score
Avg: 83.1
36.895
Quality
57.8239
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Dennis Trenner, D.P.M. 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.
Orohealth Corporation A Non Profit Healthcare System
Oroville, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Dennis Trenner, D.P.M.. To verify Dennis Trenner, D.P.M.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Dennis Trenner, D.P.M. - brand share 3.0%
Foot Surgery Podiatrist average
3% brand-name claims vs 97% generic, on 389 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.
389
Total Claims
$15K
Total Drug Cost
158
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 421
- Total Day Supply
- 9,460
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $9K
- Opioid Claims
- 15 (3.9% rate)
- Antibiotic Claims
- 117
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 1.67
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 29, 65-74: 49, 75-84: 60, 85+: 20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dennis Trenner, D.P.M. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ketoconazole
Ketoconazole
67 claims
- Gabapentin
Gabapentin
56 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
48 claims
- Terbinafine Hcl
Terbinafine Hcl
31 claims
- Doxycycline Hyclate 23
Doxycycline Hyclate
23 claims
- Cephalexin 16
Cephalexin
16 claims
- Pregabalin 15
Pregabalin
15 claims
- Ropinirole Hcl 13
Ropinirole Hcl
13 claims
| Drug | Claims |
|---|---|
| Ketoconazole | 67 |
| Gabapentin | 56 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 48 |
| Terbinafine Hcl | 31 |
| Doxycycline Hyclate | 23 |
| Cephalexin | 16 |
| Pregabalin | 15 |
| Ropinirole Hcl | 13 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 11 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Foot Surgery Podiatrist Overview
How Dennis Trenner, D.P.M. fits within the Foot Surgery Podiatrist landscape nationally.
1,519
Foot Surgery Podiatrist Providers in US
53
States with Foot Surgery Podiatrist
342
Avg Claims per Provider
Dennis Trenner, D.P.M.'s 389 claims are above the specialty average of 342.
Nearby Foot Surgery Podiatrist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Trenner.
Dr. Jorge Alaniz
D.P.M.
Fremont, CA
Dr. Robin Andrews
DPM
Laguna Hills, CA
Dr. Derick Ball
DPM
Hawthorne, CA
Dr. Megan Balliet
D.P.M.
San Francisco, CA
Dr. Karen Bartku
DPM
San Diego, CA
Compare Foot Surgery Podiatrist 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Foot Surgery Podiatrist 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 Dennis Trenner, D.P.M.'s specialty? ▼
Dennis Trenner, D.P.M. specializes in Foot Surgery Podiatrist and practices in Oroville, California. Credentials: D.P.M..
How much does Dennis Trenner, D.P.M. prescribe under Medicare Part D? ▼
In 2023, Dennis Trenner, D.P.M. wrote 389 Medicare Part D claims totaling $15K in drug costs for 158 beneficiaries.
What is Dennis Trenner, D.P.M.'s Medicare quality score? ▼
Dennis Trenner, D.P.M. has a CMS MIPS Final Score of 73.3/100 (Quality: 36.9, Cost: 57.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Dennis Trenner, D.P.M. located? ▼
Dennis Trenner, D.P.M. is located at 2760 ORO DAM BLVD E, Oroville, CA, 95966. Phone: (530) 534-0601.
What is Dennis Trenner, D.P.M.'s NPI number? ▼
Dennis Trenner, D.P.M.'s National Provider Identifier (NPI) is 1356361190, issued on 07/21/2006.
Does Dennis Trenner, D.P.M. prescribe more brand-name or generic drugs? ▼
Dennis Trenner, D.P.M.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $6K in brand drug costs.
Does Dennis Trenner, D.P.M. prescribe opioids? ▼
Yes, Dennis Trenner, D.P.M. had 15 opioid claims in 2023 with an opioid prescribing rate of 3.9%.
How many Foot Surgery Podiatrist providers are there in the US? ▼
There are 1,519 Foot Surgery Podiatrist providers across 53 states in the US. The average Foot Surgery Podiatrist provider writes 342 Medicare Part D claims per year.
What drugs does Dennis Trenner, D.P.M. prescribe most often? ▼
Based on 2023 Medicare Part D data, Dennis Trenner, D.P.M.'s most frequently prescribed drugs include Ketoconazole, Gabapentin, Sulfamethoxazole-Trimethoprim. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dennis Trenner, D.P.M. accept Medicare? ▼
Dennis Trenner, D.P.M. appears in CMS Medicare data with 389 Part D claims and 158 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dennis Trenner, D.P.M.'s credentials? ▼
Dennis Trenner, D.P.M.'s NPI is 1356361190 with credentials D.P.M.. 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.