Anti-Inflammatory AgentsBiological AssayInhibitory Concentration 50
Dr. John William Davis, MD, PhD
NPI1306689823
- Part D claims, 2024
- 295
- Publications
- 1
- State license
- 1
- Year NPI issued
- 2024
- Practice address
- 1 Barnes Jewish Hospital Plaza, Saint Louis, MO 63110
- Practice phone
- Call (314) 747-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Davis' professional email, personal email and mobile number
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Dr. John William Davis is an internist in Saint Louis, Missouri
Dr. Davis practices in Saint Louis, Missouri.
Dr. Davis' NPI, 1306689823, was assigned on June 13, 2024. Dr. Davis holds Missouri license 2024022103.
NPI and contact details
- NPI
- 1306689823NPI Registry (opens in a new tab)
- NPI enumeration date
- June 13, 2024
- NPI status
- Active
- Practice phone
- (314) 747-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John William Davis' practice address is in Saint Louis, Missouri
Dr. Davis' practice address in the NPI Registry is 1 Barnes Jewish Hospital Plaza, Saint Louis, MO 63110. The practice phone is (314) 747-3000.
- NPI Registry address1 Barnes Jewish Hospital Plaza, Saint Louis, MO 63110Phone(314) 747-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John William Davis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Davis practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Davis' practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John William Davis is one of 2,114 internists in Missouri
Internal medicine is Dr. Davis' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Davis is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Davis
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John William Davis' patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Davis' median patient age at 61, with 50% women.
Dr. Davis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. John William Davis wrote 295 Medicare Part D claims in 2024
In 2024, Dr. Davis wrote 295 Medicare Part D claims for 42 patients. 80% of them were for generic drugs. CMS names the drug for 107 of them, across 8 drugs with 11 or more claims each, at $9,854 in total drug cost.
Part D claims, 2024295
Drugs named by CMS8
Total drug cost$9,854
Part D patients42
Dr. Davis' Part D claims by kind of drug, 2024
- Generic236 claims80%
- Brand-name and other59 claims20%
Dr. Davis' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. John William Davis has 1 publication on record
Dmand AI links 1 paper to Dr. Davis in 2011. Dr. Davis' most frequent co-author is Hao Feng, MD.
Papers1
Dr. Davis' most frequent co-authors
Recent publications by Dr. Davis
See who Dr. Davis researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Davis works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. John William Davis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John William Davis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John William Davis' NPI number?
Dr. John William Davis' NPI number is 1306689823. It was assigned on June 13, 2024, and it is active in the NPI Registry.
What kind of doctor is Dr. John William Davis?
Dr. John William Davis is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John William Davis practice?
Dr. Davis practices at 1 Barnes Jewish Hospital Plaza, Saint Louis, MO 63110.
What is Dr. John William Davis' office phone number?
The practice phone on file for Dr. Davis is (314) 747-3000.
What is Dr. John William Davis' medical license number?
Dr. Davis holds Missouri license 2024022103.
What drugs does Dr. John William Davis prescribe most?
In 2024 Medicare Part D data, Dr. Davis' most prescribed drugs by claims were Atorvastatin Calcium, Pantoprazole Sodium and Amlodipine Besylate.
How long has Dr. John William Davis been practicing?
Dr. Davis' NPI was assigned in 2024.
Does Dr. John William Davis do research?
Dmand AI links 1 publication to Dr. Davis.
Who does Dr. John William Davis publish with?
Dr. Davis' most frequent co-authors are Hao Feng, MD (1 shared paper).
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