Dr. William Dufficy, MD
- Publications
- 1
- Industry payments
- $41
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Practice address
- 750s Bascom Ave, San Jose, CA 95128
- Practice phone
- Call (408) 885-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Valley Health Center San Jose (Bascom Ave)
FQHC - Main Site · San Jose, California
Find Dr. Dufficy's 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. William Dufficy is a pediatrician in San Jose, California
Dr. Dufficy practices at Valley Health Center San Jose (Bascom Ave) in San Jose, California.
Dr. Dufficy's NPI, 1033615984, was assigned on March 31, 2018. Dr. Dufficy holds California license A180816.
- NPI
- 1033615984NPI Registry (opens in a new tab)
- NPI enumeration date
- March 31, 2018
- NPI status
- Active
- Practice phone
- (408) 885-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William Dufficy practices at Valley Health Center San Jose (Bascom Ave) in San Jose, California
Dr. Dufficy's primary practice is Valley Health Center San Jose (Bascom Ave), at 750s Bascom Ave, San Jose, CA 95128 in Santa Clara County. The practice phone is (408) 885-5000.
- Valley Health Center San Jose (Bascom Ave)750s Bascom Ave, San Jose, CA 95128 · Santa Clara CountyPhone(408) 885-5000
Source: Dmand AI Affiliation Data
Dr. William Dufficy is affiliated with 2 sites of care and 1 medical group
Dr. Dufficy's primary practice is Valley Health Center San Jose (Bascom Ave) in San Jose, California. The medical group on file is County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI also links Dr. Dufficy to 1 more urgent care center, named with a free account. Dr. Dufficy's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Dufficy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dufficy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Valley Health Center San Jose (Bascom Ave) | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Dufficy is one of 8,236 pediatricians in California
Pediatrics is Dr. Dufficy's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Dufficy is licensed in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Dr. Dufficy
Counts of pediatricians 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. William Dufficy's patients have a median age of 8
Across all payers, Dmand AI patient panel data puts Dr. Dufficy's median patient age at 8, with 35% women.
Dr. Dufficy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 8
Patient panel by sex, all payers
- Women35%
- Men65%
Source: Dmand AI Patient Panel Data
Dr. William Dufficy has 1 publication on record
Dmand AI links 1 paper to Dr. Dufficy in 2021. Dr. Dufficy's most frequent co-authors are Alexander Gipsman, MD and Jessica Helena Randa Goldstein, MD.
Dr. Dufficy's most frequent co-authors
Recent publications by Dr. Dufficy
See who Dr. Dufficy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Dufficy works with, so you can find a warm path to the right pediatricians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Dufficy received $41 in industry payments in 2022
CMS Open Payments shows 2 general payments to Dr. Dufficy from 1 drug or device company in 2022. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $41.
Companies that paid Dr. Dufficy the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William Dufficy'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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. William Dufficy
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. William Dufficy's NPI number?
Dr. William Dufficy's NPI number is 1033615984. It was assigned on March 31, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. William Dufficy?
Dr. William Dufficy is a pediatrician in San Jose, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. William Dufficy practice?
Dr. Dufficy practices at 750s Bascom Ave, San Jose, CA 95128. Dr. Dufficy's primary practice is Valley Health Center San Jose (Bascom Ave) in San Jose, California. Dmand AI also links Dr. Dufficy to 1 urgent care center.
What is Dr. William Dufficy's office phone number?
The practice phone on file for Dr. Dufficy is (408) 885-5000.
What is Dr. William Dufficy's medical license number?
Dr. Dufficy holds California license A180816.
What medical group is Dr. William Dufficy part of?
Dr. Dufficy is linked to County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic.
Has Dr. William Dufficy received payments from drug or device companies?
CMS Open Payments shows $41 in general payments to Dr. Dufficy from 1 company from 2022 to 2022. The largest total came from Abbvie Inc.
How long has Dr. William Dufficy been practicing?
Dr. Dufficy's NPI was assigned in 2018.
Does Dr. William Dufficy do research?
Dmand AI links 1 publication to Dr. Dufficy.
Who does Dr. William Dufficy publish with?
Dr. Dufficy's most frequent co-authors are Alexander Gipsman, MD (1 shared paper) and Jessica Helena Randa Goldstein, MD (1 shared paper).
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