Gregory Iwaasa, DPM
NPI 1215244041 · Foot & Ankle Surgery Podiatrist · Bismarck, ND
Enrolled with Medicare as Practitioner - Podiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Iwaasa, DPM is a Foot & Ankle Surgery Podiatrist provider in Bismarck, ND (NPI 1215244041).
Provider details
- NPI number
- 1215244041
- Entity type
- Individual
- Primary specialty
- Foot & Ankle Surgery PodiatristPodiatric Medicine & Surgery Service Providers
- Credential
- DPM
- Sex
- Male
- Sole proprietor
- No
- License
- SC006202 (PA)
Specialties & taxonomies
Podiatric Medicine & Surgery Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,348 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 683 | $85 |
| Removal of Fingernails Or Toenails, 6 Or More Nails11721 | 275 | $42 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 143 | $105 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 76 | $53 |
| Removal of Noncancer Thickened Skin Growth, 2-4 Growths11056 | 39 | $75 |
| Repair of Toe Tendon28010 | 33 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 19 | 19 |
| Cephalexin | 17 | 14 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 14 |
| Terbinafine Hcl | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-08-31
- Last updated
- 2013-09-16
Frequently asked questions
- What is Gregory Iwaasa's NPI number?
- Gregory Iwaasa's National Provider Identifier (NPI) is 1215244041, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Iwaasa's specialty?
- Gregory Iwaasa is listed in the NPPES registry with a primary specialty of Foot & Ankle Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is Gregory Iwaasa located?
- Gregory Iwaasa's practice location on file with NPPES is 401 N 9th St, Bismarck, ND 58501-4530.
- What is Gregory Iwaasa's phone number?
- The practice phone number listed in the NPPES registry for Gregory Iwaasa is (701) 530-6000.
- Does Gregory Iwaasa accept Medicare?
- Gregory Iwaasa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Iwaasa's NPI active?
- Yes — Gregory Iwaasa's NPI (1215244041) is active in the NPPES registry as of the last update on 2013-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.