Adelaide Willis, MD
Family Medicine Physician · West Covina, CA
Adelaide Willis, MD is a family medicine physician with a practice address in West Covina, California, and NPI 1073561346, issued on May 5, 2006. Check the license (California A44131, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Adelaide Willis
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A44131 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 W West Covina Pkwy, West Covina, CA 91790
- Phone
- (626) 960-8614
- Enumerated
- May 5, 2006
- Record last updated
- Apr 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (626) 960-8624
- Medicaid ID
- 00A441310 CA
- Medicare enrollment
- Enrolled (PECOS I20100513001044); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1500 W West Covina Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Suneetha Ali, M.D.Obstetrics & Gynecology Physician1679523682
- Kamel Azmy, M.D.Pediatrics Physician1679522270
- Darrell Carter, P.A.Physician Assistant1407047756
- Justine Cruz, NP-CNurse Practitioner1932817897
- Van Duong, M.D.Family Medicine Physician1497705289
- Clara Edobor, NPNurse Practitioner1477561496
Verify Adelaide Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A44131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% more Medicare Part D claims than the average family medicine physician in 2024
4,919 Medicare Part D claims for 427 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 74 claims were for opioids.
Most prescribed
- Atorvastatin Calcium275 claims
- Losartan Potassium251 claims
- Amlodipine Besylate235 claims
- Metformin Hcl227 claims
- Levothyroxine Sodium198 claims
- Simvastatin186 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.
Industry payments in 2024: $815.64
31 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mayflower Medical Group IncCovina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adelaide Willis among 17,133 family medicine physician records in California
Adelaide Willis, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1981 · median 2005 among the 10,652 with a school on file
- Record last updated2011 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
69 family medicine physician records list a practice address in West Covina
They are 69 of the 2,450 NPPES records with a practice address in West Covina, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in West Covina → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Fe Advincula, M.D.West Covina, CA 917901235162272
- Melody Angeles-Riparip, M.D.West Covina, CA 917901093752248
- Van Duong, M.D.West Covina, CA 917901497705289
- Teresita Belen Gan, MDWest Covina, CA 917901114028727
- John Koumas, D.O.West Covina, CA 917901134111958
- Zaida Obeso, M.D.West Covina, CA 917901881790616
- Jose Pilpa, MDWest Covina, CA 917901760439012
- Adriana Pollak Lazzaro, DOWest Covina, CA 917901306923974
Common questions
What is Adelaide Willis, MD's NPI number?
Adelaide Willis, MD's National Provider Identifier (NPI) is 1073561346, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Adelaide Willis, MD located?
The NPPES record lists a practice address at 1500 W West Covina Pkwy, West Covina, CA, 91790. Phone: (626) 960-8614. Providers update this record themselves, so call before visiting.
How can I verify Adelaide Willis, MD's license?
NPPES lists California license number A44131, 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 Adelaide Willis, MD prescribe under Medicare Part D?
In 2024, Adelaide Willis, MD had 4,919 Medicare Part D claims for 427 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.