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Dr. Jeff W. Chiu, DO
NPI1104279348
- Medicare services, 2022
- 313
- Part D claims, 2024
- 143
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $259
- Practice address
- 2500 Alhambra Avenue, Martinez, CA 94553
- Practice phone
- Call (925) 370-5000
- 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
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Dr. Jeff W. Chiu is an emergency medicine physician in Martinez, California
Dr. Chiu practices at Contra Costa Regional Medical Center in Martinez, California, part of State of California.
Dr. Chiu's NPI, 1104279348, was assigned on July 22, 2016. Dr. Chiu graduated from Touro University California - Vallejo in 2016. Dr. Chiu holds California license 20A15789.
NPI and contact details
- NPI
- 1104279348NPI Registry (opens in a new tab)
- NPI enumeration date
- July 22, 2016
- NPI status
- Active
- Practice phone
- (925) 370-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jeff W. Chiu practices at Contra Costa Regional Medical Center in Martinez, California
Dr. Chiu's primary practice is Contra Costa Regional Medical Center, at 2500 Alhambra Avenue, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5000.
- Contra Costa Regional Medical Center2500 Alhambra Avenue, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5000
Source: Dmand AI Affiliation Data
Dr. Jeff W. Chiu is affiliated with 1 site of care and 4 medical groups
Dr. Chiu's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. The medical group on file is West County Adult Mental Health Services. Dmand AI also links Dr. Chiu to 3 more medical groups, each named with a free account. Dr. Chiu's employer is on file too: a hospital.
West County Adult Mental Health Services3 medical groupsNames with a free accountEmployer: hospitalName with a free account
See all 5 affiliations for Dr. ChiuSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jeff W. Chiu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chiu practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Contra Costa Regional Medical Center | Available with a free account |
| +3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jeff W. Chiu is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Chiu's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chiu is board certified in family medicine by the American Board of Family Medicine. Dr. Chiu is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Chiu
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
7,423emergency medicine physicians in California18emergency medicine physicians in Martinez16emergency medicine physicians at Contra Costa Regional Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jeff W. Chiu billed Medicare for 313 services in 2022
CMS data shows 313 Medicare services from Dr. Chiu across 5 procedure codes in 2022. Medicare paid $28,690 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2022313
Paid by Medicare$28,690
Procedure codes5
Dr. Chiu's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1272022: 23988%
- Tests and treatments
- 2021: 392022: 7490%
Dr. Chiu compared with the California median for emergency medicine physicians, 2022
- Dr. Chiu
- California median
- Medicare services
- 313vs 26518% above
- Part D claims
- 52vs 6216% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Chiu's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chiu?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chiu and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeff W. Chiu's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Dr. Chiu's median patient age at 62, with 53% 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 62
Patient panel by sex, all payers
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Jeff W. Chiu wrote 143 Medicare Part D claims in 2024
In 2024, Dr. Chiu wrote 143 Medicare Part D claims for 87 patients. 87% of them were for generic drugs. CMS names the drug for 52 of them, across 4 drugs with 11 or more claims each, at $403 in total drug cost. In 2019, CMS named 134 claims across 7 drugs.
Part D claims, 2024143
Drugs named by CMS4
Total drug cost$403
Part D patients87
Dr. Chiu's Part D claims by kind of drug, 2024
- Generic124 claims87%
- Brand-name19 claims13%
Dr. Chiu's most prescribed drugs by claims, 2022
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. Chiu's Part D claims, 2024
- Antibiotics34%48 of 143 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, 2019 to 2022
- 2019
- 2022
- Claims for drugs CMS names
- 2019: 1342022: 5261%
Drugs named by CMS: 4 in 2022, 7 in 2019.
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. Jeff W. Chiu has 1 publication on record
Dmand AI links 1 paper to Dr. Chiu. Dr. Chiu's most frequent co-author is Jay H. Shubrook, DO.
Papers1
Dr. Chiu's most frequent co-authors
Recent publications by Dr. Chiu
See who Dr. Chiu researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chiu works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jeff W. Chiu received $259 in industry payments from 2021 to 2024
CMS Open Payments shows 7 general payments to Dr. Chiu from 2 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 72% of the total. Intuitive Surgical, Inc. paid the most, $138.
General payments to Dr. Chiu by program year, 2021 to 2024
General payments to Dr. Chiu by kind, 2021 to 2024
$259in total
- Food and beverage$18672%
- Education$7228%
Companies that paid Dr. Chiu the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jeff W. Chiu graduated from Touro University California - Vallejo
Dr. Chiu graduated from Touro University California - Vallejo in 2016.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Jeff W. Chiu accepts plans from 4 insurance carriers
Dr. Chiu is in network with 4 carriers, including Aetna, United Healthcare and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- HCSC
Plan types Dr. Chiu accepts, by number of carriers
- PPO3
- EPO2
- HMO2
- Medicare2
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Jeff W. 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 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 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) |
| 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) |
| 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. Jeff W. 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. Jeff W. Chiu's NPI number?
Dr. Jeff W. Chiu's NPI number is 1104279348. It was assigned on July 22, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeff W. Chiu?
Dr. Jeff W. Chiu is an emergency medicine physician in Martinez, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Jeff W. Chiu practice?
Dr. Chiu practices at 2500 Alhambra Avenue, Martinez, CA 94553. Dr. Chiu's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. Dmand AI also links Dr. Chiu to 3 medical groups.
What is Dr. Jeff W. Chiu's office phone number?
The practice phone on file for Dr. Chiu is (925) 370-5000.
What is Dr. Jeff W. Chiu's medical license number?
Dr. Chiu holds California license 20A15789.
Which hospitals is Dr. Jeff W. Chiu affiliated with?
Dr. Chiu practices at Contra Costa Regional Medical Center in Martinez, California.
What medical group is Dr. Jeff W. Chiu part of?
Dr. Chiu is linked to West County Adult Mental Health Services. Dmand AI links Dr. Chiu to 3 more medical groups.
Does Dr. Jeff W. Chiu accept Medicare?
Yes. CMS data shows Dr. Chiu billed Medicare for 313 services in 2022.
Is Dr. Jeff W. Chiu board certified?
Yes. Dr. Chiu is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Jeff W. Chiu bill to Medicare?
In 2022, Dr. Chiu's most billed Medicare services were emergency department visit (99284), heart test or procedure (93010) and emergency department visit (99285).
Show 7 more questionsShow fewer questions
Where did Dr. Jeff W. Chiu go to medical school?
Dr. Chiu graduated from Touro University California - Vallejo in 2016.
What drugs does Dr. Jeff W. Chiu prescribe most?
In 2022 Medicare Part D data, Dr. Chiu's most prescribed drugs by claims were Ibuprofen, Hydrocodone-Acetaminophen and Nitrofurantoin Mono-Macro.
Has Dr. Jeff W. Chiu received payments from drug or device companies?
CMS Open Payments shows $259 in general payments to Dr. Chiu from 2 companies from 2021 to 2024. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Jeff W. Chiu been practicing?
Dr. Chiu graduated from medical school in 2016, 10 years ago.
Does Dr. Jeff W. Chiu do research?
Dmand AI links 1 publication to Dr. Chiu.
Who does Dr. Jeff W. Chiu publish with?
Dr. Chiu's most frequent co-authors are Jay H. Shubrook, DO (1 shared paper).
What insurance does Dr. Jeff W. Chiu accept?
Dr. Chiu is in network with 4 carriers, including Aetna, United Healthcare and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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