James L. Willis, D.O.
Hospitalist Physician · Tavares, FL
James L. Willis, D.O. is a hospitalist physician with a practice address in Tavares, Florida, and NPI 1154322915, issued on Aug 2, 2005. Check the license (Florida OS8915, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- James L. Willis
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- OS8915 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1741 David Walker Dr, Tavares, FL 32778
- Phone
- (352) 742-8836
- Enumerated
- Aug 2, 2005
- Record last updated
- Aug 22, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (352) 742-8829
- Medicaid ID
- 268324500 FL
- Medicare enrollment
- Enrolled (PECOS I20040207000228); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 1,817 in Florida → Look up another NPI →
Also registered at 1741 David Walker Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aji Achuthan, ARNPFamily Nurse Practitioner1023489309
- Mark Britton, MDHospitalist Physician1497795959
- Shaik Ejazuddin, MDInternal Medicine Physician1073501185
- Shannon Martin, ARNPNurse Practitioner1558805838
- Diana Moldoveanu, M.D.Hospitalist Physician1396716528
- Feras Toumeh, M.D.Hospitalist Physician1174774046
Verify James L. Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license OS8915Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average hospitalist physician in 2024
491 Medicare Part D claims for 193 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 37 claims were for opioids.
Most prescribed
- Prednisone26 claims
- Clopidogrel21 claims
- Cefdinir20 claims
- Amlodipine Besylate15 claims
- Eliquis15 claims
- Atorvastatin Calcium13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- A Helping Hands Physicians Group LLCSanford, FL
- Florida Hospital Healthcare Partners, IncPalm Coast, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James L. Willis among 1,817 hospitalist physician records in Florida
James L. Willis, D.O. is one of 1,817 hospitalist physician records with a practice address in Florida. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 85% of these records are
- Graduated1998 · median 2010 among the 1,549 with a school on file
- Record last updated2016 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 hospitalist physician records list a practice address in Tavares
They are 9 of the 607 NPPES records with a practice address in Tavares, and 1,817 hospitalist physician records in Florida.
All 1,817 in Florida → Every provider in Tavares → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Mark Britton, MDTavares, FL 327781497795959
- Gineen Cudjoe, M.D.Tavares, FL 327781992180483
- Bibi Eoonous, D.O.Tavares, FL 327781457540288
- Haseeb Kazim, MDTavares, FL 327781346273786
- David Koo, M.D.Tavares, FL 327781306841044
- Mary Lane, M.D.Tavares, FL 327781922325794
- Diana Moldoveanu, M.D.Tavares, FL 327781396716528
- Feras Toumeh, M.D.Tavares, FL 327781174774046
Common questions
What is James L. Willis, D.O.'s NPI number?
James L. Willis, D.O.'s National Provider Identifier (NPI) is 1154322915, issued on Aug 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James L. Willis, D.O. located?
The NPPES record lists a practice address at 1741 David Walker Dr, Tavares, FL, 32778. Phone: (352) 742-8836. Providers update this record themselves, so call before visiting.
How can I verify James L. Willis, D.O.'s license?
NPPES lists Florida license number OS8915, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James L. Willis, D.O. prescribe under Medicare Part D?
In 2024, James L. Willis, D.O. had 491 Medicare Part D claims for 193 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.