John Davis, MD PHD
NPI 1306689823 · Internal Medicine Physician · St. Louis, MO
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Davis, MD PHD is a Internal Medicine Physician provider in St. Louis, MO (NPI 1306689823).
Provider details
- NPI number
- 1306689823
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 2024022103 (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
100% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 19 | 11 |
| Pantoprazole Sodium | 14 | — |
| Amlodipine Besylate | 13 | — |
| Fluticasone Propionate | 13 | — |
| Losartan Potassium | 13 | — |
| Lisinopril | 12 | — |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-06-13
- Last updated
- 2024-06-13
- Certified
- 2024-06-13
Frequently asked questions
- What is John Davis's NPI number?
- John Davis's National Provider Identifier (NPI) is 1306689823, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Davis's specialty?
- John Davis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Davis located?
- John Davis's practice location on file with NPPES is 1 Barnes Jewish Hospital Plaza, St. Louis, MO 63110.
- What is John Davis's phone number?
- The practice phone number listed in the NPPES registry for John Davis is (314) 747-3000.
- Does John Davis accept Medicare?
- John Davis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Davis's NPI active?
- Yes — John Davis's NPI (1306689823) is active in the NPPES registry as of the last update on 2024-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.