Mackenzie Johnson, MD
NPI 1487497251 · Emergency Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Order and Referring Only - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mackenzie Johnson, MD is a Emergency Medicine Physician provider in Saint Louis, MO (NPI 1487497251).
Provider details
- NPI number
- 1487497251
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2024022161 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-06-18
- Last updated
- 2024-06-18
- Certified
- 2024-06-18
Frequently asked questions
- What is Mackenzie Johnson's NPI number?
- Mackenzie Johnson's National Provider Identifier (NPI) is 1487497251, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mackenzie Johnson's specialty?
- Mackenzie Johnson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mackenzie Johnson located?
- Mackenzie Johnson's practice location on file with NPPES is 1 Barnes Jew Hosp Plz, Saint Louis, MO 63110-1003.
- Does Mackenzie Johnson accept Medicare?
- Mackenzie Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mackenzie Johnson's NPI active?
- Yes — Mackenzie Johnson's NPI (1487497251) is active in the NPPES registry as of the last update on 2024-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.