Doctor profile · Federal record

Dr. Michael Naillon, MD

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Longview, WA

  • NPI 1881649994
  • Accepts Medicare
  • 23 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1615 Delaware St
Longview, WA 986322367
(360) 414-2000
Mailing address
1230 7Th Ave
Longview, WA 986323166

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
February 4, 2022
Year of graduation
2003 — 23 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Washington #MD00046545 · Oregon #MD25719
Medicaid (2)
WA #8455321 · OR #026536

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1881649994. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
43
Distinct HCPCS
2
Medicare allowed
$3,216
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 32 16 $75
99238 Hospital discharge day management, 30 minutes or less 11 11 $74

In context: peer comparison

Among 10 peers in this city , average services per provider: 116. This provider delivers 0.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
128
Patients
97
Total drug cost
$1,446
Drug Type Claims Patients Total cost
Cefdinir Generic 20 20 $313
Furosemide Generic 20 17 $198
Potassium Chloride Generic 18 17 $437
Atorvastatin Calcium Generic 16 16 $131
Metoprolol Succinate Generic 16 13 $157
Losartan Potassium Generic 15 14 $103
Simvastatin Generic 12 0 $52
Oxycodone Hcl Generic 11 0 $55

Frequently asked questions

Auto-generated from federal data
What is Dr. Michael Naillon's medical specialty?
Dr. Michael Naillon practices Internal Medicine Physician in Longview, WA.
Where does Dr. Michael Naillon practice?
Dr. Michael Naillon practices at 1615 Delaware St, Longview, WA 986322367. Office phone: 3604142000.
What is Dr. Michael Naillon's NPI?
Dr. Michael Naillon's National Provider Identifier (NPI) is 1881649994, issued by NPPES.
Does Dr. Michael Naillon accept Medicare assignment?
Yes. Dr. Michael Naillon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Naillon commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99238). Source: CMS Medicare Physician & Other Practitioners file.