John Davis, M.D.
NPI 1154363372 · Adolescent Medicine (Internal Medicine) Physician · Oak Brook, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Davis, M.D. is a Adolescent Medicine (Internal Medicine) Physician provider in Oak Brook, IL (NPI 1154363372).
Provider details
- NPI number
- 1154363372
- Entity type
- Individual
- Primary specialty
- Adolescent Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01073739A (IN)
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 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
1,270 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 508 | $109 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 216 | $105 |
| Advance Care Planning, First 30 Minutes99497 | 204 | $70 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 185 | $73 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 92 | $160 |
| Critical Care, First 30-74 Minutes99291 | 65 | $196 |
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 | 23 | 19 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 14 | 12 |
| Apixabanbrand: Eliquis | 14 | — |
| Furosemide | 14 | — |
| Amlodipine Besylate | 12 | 11 |
| Sucralfate | 12 | — |
| Doxycycline Hyclate | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$180 across 3 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
- 2006-06-12
- Last updated
- 2022-11-16
- Certified
- 2022-11-16
Frequently asked questions
- What is John Davis's NPI number?
- John Davis's National Provider Identifier (NPI) is 1154363372, 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 Adolescent Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is John Davis located?
- John Davis's practice location on file with NPPES is 900 Jorie Blvd, Oak Brook, IL 60523-2213.
- What is John Davis's phone number?
- The practice phone number listed in the NPPES registry for John Davis is (630) 954-6700.
- 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 (1154363372) is active in the NPPES registry as of the last update on 2022-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.