Dr. Rex Chiu, MD
- Part D claims, 2024
- 426
- Hospital affiliations
- 2
- Industry payments
- $445
- Insurance carriers
- 1
- State licenses
- 2
- 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. Chiu'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. Rex Chiu is an internist in Stanford, California
Dr. Chiu practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Chiu's NPI, 1366580011, was assigned on February 2, 2007. Dr. Chiu graduated from The Warren Alpert Medical School of Brown University in 1994. Dr. Chiu holds California license G84116.
- NPI
- 1366580011NPI Registry (opens in a new tab)
- NPI enumeration date
- February 2, 2007
- NPI status
- Active
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Rex Chiu practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Chiu'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. Rex Chiu is affiliated with 2 sites of care
Dr. Chiu's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Chiu to 1 hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Rex Chiu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chiu 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
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Stanford University and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Rex Chiu is one of 16,751 internists in California
Internal medicine is Dr. Chiu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chiu is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Chiu's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- New York license
Internists near Dr. Chiu
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. Rex Chiu's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Chiu's median patient age at 60, with 38% women.
Dr. Chiu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women38%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Rex Chiu wrote 426 Medicare Part D claims in 2024
In 2024, Dr. Chiu wrote 426 Medicare Part D claims for 24 patients. 83% of them were for generic drugs. CMS names the drug for 141 of them, across 11 drugs with 11 or more claims each, at $9,290 in total drug cost. In 2023, CMS named 79 claims across 6 drugs.
Dr. Chiu's Part D claims by kind of drug, 2024
- Generic354 claims83%
- Brand-name and other72 claims17%
Dr. Chiu'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 792024: 14178%
Drugs named by CMS: 11 in 2024, 6 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Rex Chiu received $445 in industry payments from 2017 to 2025
CMS Open Payments shows 5 general payments to Dr. Chiu from 3 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $279.
General payments to Dr. Chiu by program year, 2017 to 2025
Companies that paid Dr. Chiu the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Rex Chiu graduated from The Warren Alpert Medical School of Brown University
Dr. Chiu graduated from The Warren Alpert Medical School of Brown University in 1994.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Rex Chiu accepts plans from 1 insurance carrier
Dr. Chiu is in network with 1 carrier, including Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
Plan types Dr. Chiu accepts, by number of carriers
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Rex Chiu'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) |
| 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. Rex Chiu
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. Rex Chiu's NPI number?
Dr. Rex Chiu's NPI number is 1366580011. It was assigned on February 2, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Rex Chiu?
Dr. Rex Chiu is an internist in Stanford, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Rex Chiu practice?
Dr. Chiu practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Chiu's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Chiu to 1 hospital.
What is Dr. Rex Chiu's office phone number?
The practice phone on file for Dr. Chiu is (650) 723-4000.
What is Dr. Rex Chiu's medical license number?
Dr. Chiu holds California license G84116, one of the licenses on file in 2 states.
Which states has Dr. Rex Chiu been licensed in?
Dmand AI has state licenses on file for Dr. Chiu in California (1997 to 2026) and New York (1995 to 1997).
Which hospitals is Dr. Rex Chiu affiliated with?
Dr. Chiu practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Chiu to 1 more hospital.
Is Dr. Rex Chiu board certified?
Yes. Dr. Chiu is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Rex Chiu go to medical school?
Dr. Chiu graduated from The Warren Alpert Medical School of Brown University in 1994.
What drugs does Dr. Rex Chiu prescribe most?
In 2024 Medicare Part D data, Dr. Chiu's most prescribed drugs by claims were Rosuvastatin Calcium, Zolpidem Tartrate and Amlodipine Besylate.
Show 3 more questionsShow fewer questions
Has Dr. Rex Chiu received payments from drug or device companies?
CMS Open Payments shows $445 in general payments to Dr. Chiu from 3 companies from 2017 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Rex Chiu been practicing?
Dr. Chiu graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Rex Chiu accept?
Dr. Chiu is in network with 1 carrier, including Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card