Michael Naillon, MD
NPI 1881649994 · Internal Medicine Physician · Longview, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Naillon, MD is a Internal Medicine Physician provider in Longview, WA (NPI 1881649994).
Provider details
- NPI number
- 1881649994
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD25719 (OR)
Specialties & taxonomies
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
68 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 | 46 | $77 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 22 | $79 |
Typical Medicare-allowed amounts for these services range $77–$79 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 27 | 26 |
| Cefdinir | 18 | 18 |
| Metoprolol Succinate | 17 | 17 |
| Potassium Chloride | 17 | 16 |
| Prednisone | 15 | 15 |
| Atorvastatin Calcium | 12 | — |
| Amlodipine Besylate | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-24
- Last updated
- 2022-02-04
Frequently asked questions
- What is Michael Naillon's NPI number?
- Michael Naillon's National Provider Identifier (NPI) is 1881649994, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Naillon's specialty?
- Michael Naillon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Naillon located?
- Michael Naillon's practice location on file with NPPES is 1615 Delaware St, Longview, WA 98632-2367.
- What is Michael Naillon's phone number?
- The practice phone number listed in the NPPES registry for Michael Naillon is (360) 414-2000.
- Does Michael Naillon accept Medicare?
- Michael Naillon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Naillon's NPI active?
- Yes — Michael Naillon's NPI (1881649994) is active in the NPPES registry as of the last update on 2022-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.