Dr. Adelaide B. Willis, MD
- Medicare services, 2024
- 233
- Medicare patients, 2024
- 103
- Part D claims, 2024
- 4,919
- Industry payments
- $2,689
- Affiliated sites
- 2
- Practice address
- 1433 N Hollenbeck Ave, Covina, CA 91722
- Practice phone
- Call (626) 331-2209
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mayflower Medical Group, Inc.
Covina, California
Find Dr. Willis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Adelaide B. Willis is a family medicine physician in Covina, California
Dr. Willis practices at Mayflower Medical Group, Inc. in Covina, California.
Dr. Willis' NPI, 1073561346, was assigned on May 5, 2006. Dr. Willis graduated from David Geffen School of Medicine at UCLA in 1985. Dr. Willis' California license number on file is A44131.
- NPI
- 1073561346NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103954003
- NPI enumeration date
- May 5, 2006
- NPI status
- Active
- Offers telehealth
- Yes
- Practice phone
- (626) 331-2209
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 71
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Adelaide B. Willis practices at Mayflower Medical Group, Inc. in Covina, California
Dr. Willis' primary practice is Mayflower Medical Group, Inc., at 1433 N Hollenbeck Ave, Covina, CA 91722 in Los Angeles County. The practice phone is (626) 331-2209.
- Mayflower Medical Group, Inc.1433 N Hollenbeck Ave, Covina, CA 91722 · Los Angeles CountyPhone(626) 331-2209
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Adelaide B. Willis is affiliated with 3 sites of care and 2 medical groups
Dr. Willis' primary practice is Mayflower Medical Group, Inc. in Covina, California. The medical group on file is Mayflower Medical Group. Dmand AI also links Dr. Willis to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Adelaide B. Willis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Willis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayflower Medical Group, Inc. | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Adelaide B. Willis is one of 15,680 family medicine physicians in California
Family medicine is Dr. Willis' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Willis has a license on file in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute skin infection, ankle or foot injury, asthma, chronic diabetes, chronic hypertension, chronic kidney disease, chronic obstructive pulmonary disease (COPD) and cirrhosis of the liver among the conditions Dr. Willis treats.
Family medicine physicians near Dr. Willis
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Adelaide B. Willis billed Medicare for 233 services in 2024
CMS data shows 233 Medicare services from Dr. Willis across 3 procedure codes in 2024, for 103 Medicare patients. Medicare paid $14,016 for them. Every service was in an office.
Dr. Willis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3352024: 22134%
- Other services
- 2023: 172024: 1229%
Dr. Willis compared with the California median for family medicine physicians, 2024
- Dr. Willis
- California median
- Medicare services
- 233vs 2465% below
- Medicare patients
- 103vs 11813% below
- Part D claims
- 4,203vs 8335.0 times
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Willis' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Willis and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Adelaide B. Willis treated 103 Medicare patients in 2024, average age 71
CMS counts 103 Medicare patients who saw Dr. Willis in 2024. The largest group is 65 to 74, with 59 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 53% are also on Medicaid. Their average risk score is 1.02, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Willis' median patient age at 58, with 73% women.
Dr. Willis' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Willis' Medicare patients by sex, 2024
- Women7270%
- Men3130%
Chronic conditions among Dr. Willis' Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Diabetes44%
- Arthritis43%
- Chronic kidney disease21%
- Ischemic heart disease21%
- Osteoporosis20%
- Anxiety15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Willis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women73%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Adelaide B. Willis wrote 4,919 Medicare Part D claims in 2024
In 2024, Dr. Willis wrote 4,919 Medicare Part D claims for 427 patients. 90% of them were for generic drugs. CMS names the drug for 4,203 of them, across 83 drugs with 11 or more claims each, at $138,770 in total drug cost. In 2023, CMS named 4,859 claims across 93 drugs.
Dr. Willis' Part D claims by kind of drug, 2024
- Generic4,427 claims90%
- Brand-name443 claims9%
- Other49 claims1%
Dr. Willis' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Willis' Part D claims, 2024
- Opioids2%74 of 4,919 claims
- Antibiotics2%98 of 4,919 claims
- Antipsychotics, patients 65 and over1%29 of 4,919 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,8592024: 4,20314%
Drugs named by CMS: 83 in 2024, 93 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Adelaide B. Willis offers telehealth to Medicare patients
CMS lists Dr. Willis as offering telehealth.
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Adelaide B. Willis received $2,689 in industry payments from 2016 to 2025
CMS Open Payments shows 123 general payments to Dr. Willis from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $353.
General payments to Dr. Willis by program year, 2016 to 2025
General payments to Dr. Willis by kind, 2016 to 2025
- Food and beverage$2,684100%
- Education$50%
Companies that paid Dr. Willis the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Adelaide B. Willis has 1 award and honors on record
Dmand AI lists 1 award for Dr. Willis, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Willis
- 2014
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Adelaide B. Willis graduated from David Geffen School of Medicine at UCLA
Dr. Willis graduated from David Geffen School of Medicine at UCLA in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Adelaide B. Willis accepts plans from 17 insurance carriers
Dr. Willis is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- LA Care
- Blue Cross Blue Shield of Massachusetts
- Molina
- +9 more carriersWith a free account
Plan types Dr. Willis accepts, by number of carriers
- HMO9
- Medicare9
- PPO9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Adelaide B. Willis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Adelaide B. Willis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Adelaide B. Willis' NPI number?
Dr. Adelaide B. Willis' NPI number is 1073561346. It was assigned on May 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Adelaide B. Willis?
Dr. Adelaide B. Willis is a family medicine physician in Covina, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Adelaide B. Willis practice?
Dr. Willis practices at 1433 N Hollenbeck Ave, Covina, CA 91722. Dr. Willis' primary practice is Mayflower Medical Group, Inc. in Covina, California. Dmand AI also links Dr. Willis to 2 group practices and clinics and 1 medical group.
What is Dr. Adelaide B. Willis' office phone number?
The practice phone on file for Dr. Willis is (626) 331-2209.
What is Dr. Adelaide B. Willis' medical license number?
Dr. Willis' California license number on file is A44131.
What medical group is Dr. Adelaide B. Willis part of?
Dr. Willis is linked to Mayflower Medical Group. Dmand AI links Dr. Willis to 1 more medical group.
Does Dr. Adelaide B. Willis accept Medicare?
Yes. CMS data shows Dr. Willis billed Medicare for 233 services in 2024.
Does Dr. Adelaide B. Willis offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Willis as offering telehealth services.
How many Medicare patients does Dr. Adelaide B. Willis see?
CMS counts 103 Medicare patients who saw Dr. Willis in 2024, with an average age of 71.
What services does Dr. Adelaide B. Willis bill to Medicare?
In 2024, Dr. Willis' most billed Medicare services were office visit, established patient (99213), office visit, established patient (99212) and medicare service (G0439).
Show 5 more questionsShow fewer questions
Where did Dr. Adelaide B. Willis go to medical school?
Dr. Willis graduated from David Geffen School of Medicine at UCLA in 1985.
What drugs does Dr. Adelaide B. Willis prescribe most?
In 2024 Medicare Part D data, Dr. Willis' most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Adelaide B. Willis received payments from drug or device companies?
CMS Open Payments shows $2,689 in general payments to Dr. Willis from 23 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Adelaide B. Willis been practicing?
Dr. Willis graduated from medical school in 1985, 41 years ago.
What insurance does Dr. Adelaide B. Willis accept?
Dr. Willis is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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