James Mcilwaine, M.D.
NPI 1558352443 · Otolaryngology Physician · Washington, MO
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Mcilwaine, M.D. is a Otolaryngology Physician provider in Washington, MO (NPI 1558352443).
Provider details
- NPI number
- 1558352443
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2002002082 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
410 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) |
|---|---|---|
| Removal of Impacted Ear Wax69210 | 96 | $44 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 62 | $102 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 62 | $116 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 60 | $154 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 53 | $81 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 195 | 34 |
| Ipratropium Bromide | 98 | 29 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 53 | 43 |
| Omeprazole | 35 | — |
| Cephalexin | 29 | 28 |
| Cefdinir | 28 | 26 |
| Prednisone | 28 | 25 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$365 across 13 records (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
- 2005-10-31
- Last updated
- 2012-01-23
Frequently asked questions
- What is James Mcilwaine's NPI number?
- James Mcilwaine's National Provider Identifier (NPI) is 1558352443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Mcilwaine's specialty?
- James Mcilwaine is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is James Mcilwaine located?
- James Mcilwaine's practice location on file with NPPES is 901 Patients First Dr, Washington, MO 63090-4700.
- What is James Mcilwaine's phone number?
- The practice phone number listed in the NPPES registry for James Mcilwaine is (636) 390-1570.
- Does James Mcilwaine accept Medicare?
- James Mcilwaine is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Mcilwaine's NPI active?
- Yes — James Mcilwaine's NPI (1558352443) is active in the NPPES registry as of the last update on 2012-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.