NPI registry status
Active
2026 NPPES data Foot Surgery Podiatrist NPI 1215973029 DPM
Verify on CMS → Karen Yamaguchi, DPM
Foot Surgery Podiatrist in Honolulu, Hawaii.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,523 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
377
Medicare Part D claims · 201 beneficiaries · Foot Surgery Podiatrist avg: 342
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
11.8/100
▼ 71 pts below national avg 83.1 · Penalty band
Industry payments
$771.93
16 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Karen Yamaguchi, DPM reported a CMS MIPS final score of 11.8/100 - below the 83.1 national average - and filed 377 Medicare Part D claims in 2023.
- 11.8/100
- MIPS score · -71 vs avg
- 377
- Part D claims, 2023
- 92%
- generic prescribing
- $771.93
- industry payments (Sunshine Act)
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.
Karen Yamaguchi, DPM's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
12 2nd percentile higher than 2% 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 Karen Yamaguchi, DPM 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, Karen Yamaguchi, DPM writes more Part D claims than 69% of them and scores higher on MIPS quality than 27% - 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 Karen Yamaguchi, DPM. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Karen Yamaguchi, DPM?
Below national averagePrimary specialty
Foot Surgery Podiatrist
Medicare Part D claims
377 10% vs specialty avg
MIPS final score
11.8/100 71.3 pts vs avg
Specialty distribution in Hawaii
How Foot Surgery Podiatrist compares to other specialties among Hawaii providers
Medicare quality performance, MIPS
Karen Yamaguchi, DPM's 2023 MIPS final score plotted against the Foot Surgery Podiatrist national average
- MIPS Final Score
- 11.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Foot Surgery Podiatrist) - 11.8/100 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).
Karen Yamaguchi, DPM appears in the CMS NPPES registry as a Foot Surgery Podiatrist provider holding DPM credentials at 615 PIIKOI ST, Honolulu, HI, 96814, with a listed phone of (808) 591-0020. NPI 1215973029 was issued on 06/21/2006.
Medicare Part D records for calendar year 2023 show 377 prescription claims written by this provider, covering 201 Medicare beneficiaries and totaling roughly $12K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 3.4%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 11.8/100 for the 2023 performance year (Quality 20), compared with the national average of 83.1.
Foot Surgery Podiatrist is a narrow specialty nationwide, with 1,523 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 | 1215973029 |
|---|---|
| Specialty | Foot Surgery Podiatrist |
| Credentials | DPM |
| Gender | Female |
| NPI Issued | 06/21/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
11.7811
Final Score
Avg: 83.1
20
Quality
Reporting: Individual
Hospital and facility affiliations
Facilities where Karen Yamaguchi, DPM 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.
Karen C Yamaguchi Dpm LLC
Honolulu, HI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Karen Yamaguchi, DPM. Source: openpaymentsdata.cms.gov.
Total received
$772
Largest payer
Amgen Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Karen Yamaguchi, DPM - brand share 8.0%
Foot Surgery Podiatrist average
8% brand-name claims vs 92% generic, on 377 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.
377
Total Claims
$12K
Total Drug Cost
201
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 463
- Total Day Supply
- 12,059
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $10K
- Opioid Claims
- 13 (3.4% rate)
- Antibiotic Claims
- 53
Patient Demographics
- Average Patient Age
- 75.2 years
- Avg HCC Risk Score
- 1.61
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 22, 65-74: 74, 75-84: 68, 85+: 37
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Karen Yamaguchi, DPM prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ciclopirox
Ciclopirox
120 claims
- Terbinafine Hcl 47
Terbinafine Hcl
47 claims
- Cephalexin 30
Cephalexin
30 claims
- Fluorouracil 24
Fluorouracil
24 claims
- Ssd 18
Ssd
18 claims
- Neomycin-Polymyxin… 15
Neomycin-Polymyxin-Hydrocort
15 claims
- Ciprofloxacin Hcl 12
Ciprofloxacin Hcl
12 claims
- Fluconazole 12
Fluconazole
12 claims
| Drug | Claims |
|---|---|
| Ciclopirox Ciclopirox Olamine | 120 |
| Terbinafine Hcl | 47 |
| Cephalexin | 30 |
| Fluorouracil | 24 |
| Ssd Silver Sulfadiazine | 18 |
| Neomycin-Polymyxin-Hydrocort Neomycin/Polymyxin B/Hydrocort | 15 |
| Ciprofloxacin Hcl | 12 |
| Fluconazole | 12 |
| Gentamicin Sulfate | 12 |
| Mupirocin | 12 |
* 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 Karen Yamaguchi, DPM fits within the Foot Surgery Podiatrist landscape nationally.
1,523
Foot Surgery Podiatrist Providers in US
53
States with Foot Surgery Podiatrist
342
Avg Claims per Provider
Karen Yamaguchi, DPM's 377 claims are above the specialty average of 342.
Nearby Foot Surgery Podiatrist Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as Yamaguchi.
Dr. Artreese Adams
DPM
Honolulu, HI
Dr. Michael Chun
D.P.M.
Aiea, HI
Dr. Byron Ho
D.P.M.
Honolulu, HI
Dr. Grace Pascual
D.P.M.
Honolulu, HI
Dr. Mark Senft
D.P.M.
Kailua Kona, HI
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 Hawaii 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 Karen Yamaguchi, DPM's specialty? ▼
Karen Yamaguchi, DPM specializes in Foot Surgery Podiatrist and practices in Honolulu, Hawaii. Credentials: DPM.
How much does Karen Yamaguchi, DPM prescribe under Medicare Part D? ▼
In 2023, Karen Yamaguchi, DPM wrote 377 Medicare Part D claims totaling $12K in drug costs for 201 beneficiaries.
What is Karen Yamaguchi, DPM's Medicare quality score? ▼
Karen Yamaguchi, DPM has a CMS MIPS Final Score of 11.8/100 (Quality: 20). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Karen Yamaguchi, DPM located? ▼
Karen Yamaguchi, DPM is located at 615 PIIKOI ST, Honolulu, HI, 96814. Phone: (808) 591-0020.
What is Karen Yamaguchi, DPM's NPI number? ▼
Karen Yamaguchi, DPM's National Provider Identifier (NPI) is 1215973029, issued on 06/21/2006.
Does Karen Yamaguchi, DPM prescribe more brand-name or generic drugs? ▼
Karen Yamaguchi, DPM's prescribing is 8% brand-name and 92% generic drugs by claim count, with $2K in brand drug costs.
Does Karen Yamaguchi, DPM prescribe opioids? ▼
Yes, Karen Yamaguchi, DPM had 13 opioid claims in 2023 with an opioid prescribing rate of 3.4%.
How many Foot Surgery Podiatrist providers are there in the US? ▼
There are 1,523 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 Karen Yamaguchi, DPM prescribe most often? ▼
Based on 2023 Medicare Part D data, Karen Yamaguchi, DPM's most frequently prescribed drugs include Ciclopirox, Terbinafine Hcl, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Karen Yamaguchi, DPM accept Medicare? ▼
Karen Yamaguchi, DPM appears in CMS Medicare data with 377 Part D claims and 201 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Karen Yamaguchi, DPM's credentials? ▼
Karen Yamaguchi, DPM's NPI is 1215973029 with credentials DPM. 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.