Dr. Paul William Willis Jr., DO
- Part D claims, 2018
- 149
- Industry payments
- $148
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1305 W Arrow Hwy, San Dimas, CA 91773-2336
- Practice phone
- Call (909) 592-9246
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
West Arrow Family Medicine
Physician office · San Dimas, 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. Paul William Willis Jr. is a family medicine physician in San Dimas, California
Dr. Willis practices at West Arrow Family Medicine in San Dimas, California.
Dr. Willis' NPI, 1518909761, was assigned on June 12, 2006. Dr. Willis graduated from WesternU College of Osteopathic Medicine of the Pacific in 1993. Dr. Willis' California license number on file is 20A6753.
- NPI
- 1518909761NPI Registry (opens in a new tab)
- NPI enumeration date
- June 12, 2006
- NPI status
- Active
- Practice phone
- (909) 592-9246
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Paul William Willis Jr. practices at West Arrow Family Medicine in San Dimas, California
Dr. Willis' primary practice is West Arrow Family Medicine, at 1305 W Arrow Hwy, San Dimas, CA 91773-2336. The practice phone is (909) 592-9246.
- West Arrow Family Medicine1305 W Arrow Hwy, San Dimas, CA 91773-2336Phone(909) 592-9246
Source: Dmand AI Affiliation Data
Dr. Paul William Willis Jr. is affiliated with 1 site of care
Dr. Willis' primary practice is West Arrow Family Medicine in San Dimas, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Paul William Willis Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Willis practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| West Arrow Family Medicine | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Paul William Willis Jr. 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 is board certified in family medicine by the American Osteopathic Board of Family Medicine. Dr. Willis has a license on file in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
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. Paul William Willis Jr.'s patients have a median age of 88
Across all payers, Dmand AI patient panel data puts Dr. Willis' median patient age at 88, with 100% women.
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 88
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Paul William Willis Jr. wrote 149 Medicare Part D claims in 2018
In 2018, Dr. Willis wrote 149 Medicare Part D claims. Every claim was for a generic drug. They cover 8 drugs, with $4,432 in total drug cost. In 2017, CMS named 206 claims across 9 drugs.
Dr. Willis' most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 2062018: 14928%
Drugs named by CMS: 8 in 2018, 9 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Paul William Willis Jr. received $148 in industry payments from 2016 to 2018
CMS Open Payments shows 2 general payments to Dr. Willis from 2 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $125.
General payments to Dr. Willis by program year, 2016 to 2018
Companies that paid Dr. Willis the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Paul William Willis Jr. graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Willis graduated from WesternU College of Osteopathic Medicine of the Pacific in 1993. Dr. Willis is a member of AOA.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Paul William Willis Jr.'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Paul William Willis Jr.
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. Paul William Willis Jr.'s NPI number?
Dr. Paul William Willis Jr.'s NPI number is 1518909761. It was assigned on June 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Paul William Willis Jr.?
Dr. Paul William Willis Jr. is a family medicine physician in San Dimas, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Paul William Willis Jr. practice?
Dr. Willis practices at 1305 W Arrow Hwy, San Dimas, CA 91773-2336. Dr. Willis' primary practice is West Arrow Family Medicine in San Dimas, California.
What is Dr. Paul William Willis Jr.'s office phone number?
The practice phone on file for Dr. Willis is (909) 592-9246.
What is Dr. Paul William Willis Jr.'s medical license number?
Dr. Willis' California license number on file is 20A6753.
Is Dr. Paul William Willis Jr. board certified?
Yes. Dr. Willis is board certified in family medicine by the American Osteopathic Board of Family Medicine.
Where did Dr. Paul William Willis Jr. go to medical school?
Dr. Willis graduated from WesternU College of Osteopathic Medicine of the Pacific in 1993.
What drugs does Dr. Paul William Willis Jr. prescribe most?
In 2018 Medicare Part D data, Dr. Willis' most prescribed drugs by claims were Oxycodone HCl, Alprazolam and Celecoxib.
Has Dr. Paul William Willis Jr. received payments from drug or device companies?
CMS Open Payments shows $148 in general payments to Dr. Willis from 2 companies from 2016 to 2018. The largest total came from Gilead Sciences, Inc.
How long has Dr. Paul William Willis Jr. been practicing?
Dr. Willis graduated from medical school in 1993, 33 years ago.
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