Walter Igawa-Silva, M.D.
NPI 1437593688 · Internal Medicine Physician · Honolulu, HI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Igawa-Silva, M.D. is a Internal Medicine Physician provider in Honolulu, HI (NPI 1437593688).
Provider details
- NPI number
- 1437593688
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A136674 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
600 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 399 | $78 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 93 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 89 | $118 |
| Advance Care Planning, First 30 Minutes99497 | 19 | $75 |
Typical Medicare-allowed amounts for these services range $75–$118 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 20 | 19 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 13 | 13 |
| Prednisone | 13 | 13 |
| Apixabanbrand: Eliquis | 12 | — |
| Cefdinir | 12 | 12 |
| Pantoprazole Sodium | 11 | 11 |
| Metoprolol Tartrate |
Practice location
Mailing address
Additional practice locations (2)
- 888 S King StHonolulu, HI 96813-3097Phone: (808) 522-4000
- 459 Patterson RdHonolulu, HI 96819Phone: (808) 433-0360Fax: (808) 433-0327
Registry dates
- Enumerated
- 2013-04-18
- Last updated
- 2019-07-27
Frequently asked questions
- What is Walter Igawa-Silva's NPI number?
- Walter Igawa-Silva's National Provider Identifier (NPI) is 1437593688, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Igawa-Silva's specialty?
- Walter Igawa-Silva is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Igawa-Silva located?
- Walter Igawa-Silva's practice location on file with NPPES is 459 Patterson Rd, Honolulu, HI 96819.
- What is Walter Igawa-Silva's phone number?
- The practice phone number listed in the NPPES registry for Walter Igawa-Silva is (808) 433-0360.
- Does Walter Igawa-Silva accept Medicare?
- Walter Igawa-Silva is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Igawa-Silva's NPI active?
- Yes — Walter Igawa-Silva's NPI (1437593688) is active in the NPPES registry as of the last update on 2019-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.