James Willis, D.O.
NPI 1154322915 · Hospitalist Physician · Tavares, FL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Willis, D.O. is a Hospitalist Physician provider in Tavares, FL (NPI 1154322915).
Provider details
- NPI number
- 1154322915
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- OS8915 (FL)
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 tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
825 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 582 | $116 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 169 | $111 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 48 | $170 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 26 | $77 |
Typical Medicare-allowed amounts for these services range $77–$170 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 26 | 24 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 21 | 15 |
| Cefdinir | 20 | 20 |
| Amlodipine Besylate | 15 | 11 |
| Apixabanbrand: Eliquis | 15 | 11 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-02
- Last updated
- 2016-08-22
Frequently asked questions
- What is James Willis's NPI number?
- James Willis's National Provider Identifier (NPI) is 1154322915, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Willis's specialty?
- James Willis is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is James Willis located?
- James Willis's practice location on file with NPPES is 1741 David Walker Dr, Tavares, FL 32778-5745.
- What is James Willis's phone number?
- The practice phone number listed in the NPPES registry for James Willis is (352) 742-8836.
- Does James Willis accept Medicare?
- James Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Willis's NPI active?
- Yes — James Willis's NPI (1154322915) is active in the NPPES registry as of the last update on 2016-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.