Paul S. Willis, MD
Hospitalist Physician · Panorama City, CA
Paul S. Willis, MD is a hospitalist physician with a practice address in Panorama City, California, and NPI 1649603390, issued on Aug 16, 2013. Check the license (California A121277, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Paul S. Willis
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A121277 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13652 Cantara St, Panorama City, CA 91402
- Phone
- (971) 563-5315
- Enumerated
- Aug 16, 2013
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140122001978); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 13652 Cantara St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Paul S. Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A121277Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average hospitalist physician in 2024
545 Medicare Part D claims for 206 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil40 claims
- Furosemide30 claims
- Atorvastatin Calcium26 claims
- Pantoprazole Sodium17 claims
- Metronidazole16 claims
- Clopidogrel15 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 one group practice
- Southern California Permanente Medical GroupPanorama City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Paul S. Willis among 3,099 hospitalist physician records in California
Paul S. Willis, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 56% of them.
- NPI issued2013 · 56% of these records are older, 39% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2010 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 49% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Panorama City → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Nana Barseghian, MDPanorama City, CA 914021245401819
- Jeffrey HalperinPanorama City, CA 914021841752649
- Menna Seifu, M.D.Panorama City, CA 914021174773683
- Amar Charugundla, DOSherman Oaks, CA 914031558999789
- Jigar Kadakia, M.D.Sherman Oaks, CA 914031144502618
- Susan Tamale, NPSherman Oaks, CA 914031073475216
- Jun Ma, M.D.Woodland Hills, CA 913671861752321
- Michael Nguyen, DOWoodland Hills, CA 913671285376392
Common questions
What is Paul S. Willis, MD's NPI number?
Paul S. Willis, MD's National Provider Identifier (NPI) is 1649603390, issued on Aug 16, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Paul S. Willis, MD located?
The NPPES record lists a practice address at 13652 Cantara St, Panorama City, CA, 91402. Phone: (971) 563-5315. Providers update this record themselves, so call before visiting.
How can I verify Paul S. Willis, MD's license?
NPPES lists California license number A121277, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Paul S. Willis, MD prescribe under Medicare Part D?
In 2024, Paul S. Willis, MD had 545 Medicare Part D claims for 206 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.