Dr. William N. Chu, MD
- Part D claims, 2024
- 2,369
- Hospital affiliations
- 2
- Industry payments
- $7,545
- Medical group
- 1
- State license
- 1
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chu'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 N. Chu is an internist in Stanford, California
Dr. Chu practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Chu's NPI, 1194875054, was assigned on January 11, 2007. Dr. Chu holds California license G76717.
- NPI
- 1194875054NPI Registry (opens in a new tab)
- NPI enumeration date
- January 11, 2007
- NPI status
- Active
- Practice phone
- (650) 723-4000
- 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 N. Chu practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Chu's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. William N. Chu is affiliated with 2 sites of care and 1 medical group
Dr. Chu's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Chu to 1 more hospital, named with a free account. Dr. Chu's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William N. Chu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chu practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | 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 N. Chu is one of 16,751 internists in California
Internal medicine is Dr. Chu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chu is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Chu
Counts of internists 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 N. Chu's patients have a median age of 78
Across all payers, Dmand AI patient panel data puts Dr. Chu's median patient age at 78, with 44% women.
Dr. Chu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women44%
- Men54%
Source: Dmand AI Patient Panel Data
Dr. William N. Chu wrote 2,369 Medicare Part D claims in 2024
In 2024, Dr. Chu wrote 2,369 Medicare Part D claims for 198 patients. 86% of them were for generic drugs. CMS names the drug for 1,883 of them, across 59 drugs with 11 or more claims each, at $170,477 in total drug cost. In 2023, CMS named 1,694 claims across 51 drugs.
Dr. Chu's Part D claims by kind of drug, 2024
- Generic2,037 claims86%
- Brand-name and other332 claims14%
Dr. Chu's 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. Chu's Part D claims, 2024
- Opioids3%69 of 2,369 claims
- Antibiotics4%103 of 2,369 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: 1,6942024: 1,88311%
Drugs named by CMS: 59 in 2024, 51 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
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Dr. William N. Chu received $7,545 in industry payments from 2016 to 2025
CMS Open Payments shows 401 general payments to Dr. Chu from 44 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Pfizer Inc. paid the most, $1,380.
General payments to Dr. Chu by program year, 2016 to 2025
General payments to Dr. Chu by kind, 2016 to 2025
- Food and beverage$7,50799%
- Education$190%
- Speaker and faculty fees$190%
Companies that paid Dr. Chu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William N. Chu'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 |
| 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) |
| 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 N. Chu
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 N. Chu's NPI number?
Dr. William N. Chu's NPI number is 1194875054. It was assigned on January 11, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. William N. Chu?
Dr. William N. Chu is an internist in Stanford, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William N. Chu practice?
Dr. Chu practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Chu's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Chu to 1 hospital.
What is Dr. William N. Chu's office phone number?
The practice phone on file for Dr. Chu is (650) 723-4000.
What is Dr. William N. Chu's medical license number?
Dr. Chu holds California license G76717.
Which hospitals is Dr. William N. Chu affiliated with?
Dr. Chu practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Chu to 1 more hospital.
What medical group is Dr. William N. Chu part of?
Dr. Chu is linked to Stanford Health Care.
What drugs does Dr. William N. Chu prescribe most?
In 2024 Medicare Part D data, Dr. Chu's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. William N. Chu received payments from drug or device companies?
CMS Open Payments shows $7,545 in general payments to Dr. Chu from 44 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. William N. Chu been practicing?
Dr. Chu's NPI was assigned in 2007.
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