William Johnson, MD
NPI 1669476495 · Pediatric Allergy/Immunology Physician · Saint Louis, MO
William Johnson, MD is a Pediatric Allergy/Immunology Physician provider in Saint Louis, MO (NPI 1669476495).
Provider details
- NPI number
- 1669476495
- Entity type
- Individual
- Primary specialty
- Pediatric Allergy/Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R1F19 (MO)
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 tenure33% of score
21 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 41 | 12 |
| Montelukast Sodium | 37 | 25 |
| Fluticasone Propionate | 23 | 18 |
| Azelastine Hcl | 20 | — |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 19 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 15 | 11 |
| Fluticasone Furoate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$175 across 1 record (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
- 2005-06-09
- Last updated
- 2018-01-24
Frequently asked questions
- What is William Johnson's NPI number?
- William Johnson's National Provider Identifier (NPI) is 1669476495, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Johnson's specialty?
- William Johnson is listed in the NPPES registry with a primary specialty of Pediatric Allergy/Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is William Johnson located?
- William Johnson's practice location on file with NPPES is 1 Childrens Pl, Saint Louis, MO 63110-1002.
- What is William Johnson's phone number?
- The practice phone number listed in the NPPES registry for William Johnson is (314) 454-2694.
- Is William Johnson's NPI active?
- Yes — William Johnson's NPI (1669476495) is active in the NPPES registry as of the last update on 2018-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.