NPI registry status
Active
2026 NPPES data Foot & Ankle Surgery Podiatrist NPI 1215244041 DPM
Verify on CMS → Gregory Iwaasa, DPM
Foot & Ankle Surgery Podiatrist in Bismarck, 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 8,920 in Foot & Ankle 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
221
Medicare Part D claims · 91 beneficiaries · Foot & Ankle Surgery Podiatrist avg: 309
MIPS score
63.4/100
▼ 20 pts below national avg 83.1 · Mid-tier
Industry payments
$19.6
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gregory Iwaasa, DPM reported a CMS MIPS final score of 63.4/100 - below the 83.1 national average - and filed 221 Medicare Part D claims in 2023.
- 63.4/100
- MIPS score · -20 vs avg
- 221
- Part D claims, 2023
- $19.6
- 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.
Gregory Iwaasa, DPM's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
63 6th percentile higher than 6% 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 Gregory Iwaasa, DPM sits
This provider among foot & ankle surgery podiatrist peers
Across the 3,155 foot & ankle surgery podiatrist providers who report both Medicare Part D prescribing and a MIPS quality score, Gregory Iwaasa, DPM writes more Part D claims than 46% of them and scores higher on MIPS quality than 26% - 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 foot & ankle surgery podiatrist peer from a representative sample of 60; the gold marker is Gregory Iwaasa, DPM. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Gregory Iwaasa, DPM?
Below national averagePrimary specialty
Foot & Ankle Surgery Podiatrist
Medicare Part D claims
221 28% vs specialty avg
MIPS final score
63.4/100 19.7 pts vs avg
Specialty distribution in North Dakota
How Foot & Ankle Surgery Podiatrist compares to other specialties among North Dakota providers
Medicare quality performance, MIPS
Gregory Iwaasa, DPM's 2023 MIPS final score plotted against the Foot & Ankle Surgery Podiatrist national average
- MIPS Final Score
- 63.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Foot & Ankle Surgery Podiatrist) - 63.4/100 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).
Gregory Iwaasa, DPM appears in the CMS NPPES registry as a Foot & Ankle Surgery Podiatrist provider holding DPM credentials at 401 N 9TH ST, Bismarck, ND, 58501, with a listed phone of (701) 530-6000. NPI 1215244041 was issued on 08/31/2010.
Medicare Part D records for calendar year 2023 show 221 prescription claims written by this provider, covering 91 Medicare beneficiaries and totaling roughly $6K in drug spend, with an opioid prescribing rate of 23.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 63.4/100 for the 2023 performance year (Quality 41.2), compared with the national average of 83.1.
Foot & Ankle Surgery Podiatrist is a mid-sized specialty nationwide, with 8,920 enrolled providers across 53 states and an average of 309 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 | 1215244041 |
|---|---|
| Specialty | Foot & Ankle Surgery Podiatrist |
| Credentials | DPM |
| Gender | Male |
| NPI Issued | 08/31/2010 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
63.4493
Final Score
Avg: 83.1
41.2175
Quality
83
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Gregory Iwaasa, 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.
Gila Regional Medical Center
★★☆☆☆ 2/5
Silver City, NM
Critical Access Hospitals
CMS CCN: 321311
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 Gregory Iwaasa, DPM. Source: openpaymentsdata.cms.gov.
Total received
$20
Largest payer
Bioventus LLC
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
221
Total Claims
$6K
Total Drug Cost
91
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 260
- Total Day Supply
- 4,541
- Generic Drug Cost
- $5K
- Opioid Claims
- 51 (23.1% rate)
- Antibiotic Claims
- 103
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 49% female / 51% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Iwaasa, DPM prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
33 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
27 claims
- Terbinafine Hcl
Terbinafine Hcl
19 claims
- Tramadol Hcl
Tramadol Hcl
19 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
18 claims
- Cephalexin
Cephalexin
14 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
14 claims
- Levofloxacin 13
Levofloxacin
13 claims
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 33 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 27 |
| Terbinafine Hcl | 19 |
| Tramadol Hcl | 19 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 18 |
| Cephalexin | 14 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 14 |
| Levofloxacin | 13 |
| Ketoconazole | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Foot & Ankle Surgery Podiatrist Overview
How Gregory Iwaasa, DPM fits within the Foot & Ankle Surgery Podiatrist landscape nationally.
8,920
Foot & Ankle Surgery Podiatrist Providers in US
53
States with Foot & Ankle Surgery Podiatrist
309
Avg Claims per Provider
Gregory Iwaasa, DPM's 221 claims are below the specialty average of 309.
Nearby Foot & Ankle Surgery Podiatrist Providers in North Dakota
Other clinicians with the same primary specialty enrolled in North Dakota, drawn from the same CMS NPPES roster as Iwaasa.
Dr. Aaron Albers
DPM
Minot, ND
Spencer Arndt
Jamestown, ND
Yashraj Chauhan
Grand Forks, ND
Dr. Clark Fullmer
DPM
Dickinson, ND
Dr. Brian Gale
DPM
Bismarck, ND
Compare Foot & Ankle 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 North Dakota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Foot & Ankle 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 Gregory Iwaasa, DPM's specialty? ▼
Gregory Iwaasa, DPM specializes in Foot & Ankle Surgery Podiatrist and practices in Bismarck, North Dakota. Credentials: DPM.
How much does Gregory Iwaasa, DPM prescribe under Medicare Part D? ▼
In 2023, Gregory Iwaasa, DPM wrote 221 Medicare Part D claims totaling $6K in drug costs for 91 beneficiaries.
What is Gregory Iwaasa, DPM's Medicare quality score? ▼
Gregory Iwaasa, DPM has a CMS MIPS Final Score of 63.4/100 (Quality: 41.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gregory Iwaasa, DPM located? ▼
Gregory Iwaasa, DPM is located at 401 N 9TH ST, Bismarck, ND, 58501. Phone: (701) 530-6000.
What is Gregory Iwaasa, DPM's NPI number? ▼
Gregory Iwaasa, DPM's National Provider Identifier (NPI) is 1215244041, issued on 08/31/2010.
Does Gregory Iwaasa, DPM prescribe opioids? ▼
Yes, Gregory Iwaasa, DPM had 51 opioid claims in 2023 with an opioid prescribing rate of 23.1%.
How many Foot & Ankle Surgery Podiatrist providers are there in the US? ▼
There are 8,920 Foot & Ankle Surgery Podiatrist providers across 53 states in the US. The average Foot & Ankle Surgery Podiatrist provider writes 309 Medicare Part D claims per year.
What drugs does Gregory Iwaasa, DPM prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Iwaasa, DPM's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Sulfamethoxazole-Trimethoprim, Terbinafine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Iwaasa, DPM accept Medicare? ▼
Gregory Iwaasa, DPM appears in CMS Medicare data with 221 Part D claims and 91 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Iwaasa, DPM's credentials? ▼
Gregory Iwaasa, DPM's NPI is 1215244041 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
Compiled from official public sources by the PlainDoctor editorial team.