Quick answers
- Does Gregory B. Iwaasa accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory B. Iwaasa accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Gregory B. Iwaasa see?
- In 2024, CMS data shows 395 Original Medicare patients and 1,427 services for Gregory B. Iwaasa. This counts Original Medicare only and measures volume, not quality.
- What is Gregory B. Iwaasa's NPI number?
- 1215244041. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Gregory B. Iwaasa, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 395 |
|---|---|
| Services billed to Medicare | 1,427 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)683 services
- Removal of fingernails or toenails, 6 or more nails (11721)275 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)143 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)76 services
- Removal of noncancer thickened skin growth, 2-4 growths (11056)39 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure73%
- Arthritis47%
- Diabetes42%
- Ischemic heart disease23%
- Heart failure22%
Hospitals where Gregory B. Iwaasa works
Medicare's Facility Affiliation Data lists Gregory B. Iwaasa at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Gila Regional Medical CenterSilver City, NM · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 321311
Practice locations
Addresses where Gregory B. Iwaasa is enrolled with Medicare (CMS data updated October 2, 2026).
- 1264 E 32nd St, Lamontana Plz Gila Surg SerSilver City, NM 88061 (575) 538‑4187
- 1302 E 32nd St Lamontana Plz, Gila Card/gila PainSilver City, NM 88061 (575) 538‑4112
- 1313 E 32nd StSilver City, NM 88061 (505) 537‑4953
- 3185 N Leslie Rd, Gila Family MedicineSilver City, NM 88061 (575) 534‑0400
- 3185 N Leslie Rd, Gila Regional PediatricsSilver City, NM 88061 (575) 534‑0400
Group practices
Medicare enrollment lists Gregory B. Iwaasa as a member of this group (CMS data updated October 2, 2026).
- Gila Regional Medical Center19 clinicians in the group
Specialties
- Podiatryprimary
Other podiatrists in New Mexico
Clinicians with the same Medicare primary specialty in New Mexico — not a recommendation.
Other clinicians in Gila Regional Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DPM |
|---|---|
| Graduation year | 2010 (16 years since podiatric medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215244041 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians