Dr. Edwin Jonathan Chiu, MD
- Medicare services, 2024
- 52
- Medicare patients, 2024
- 24
- Part D claims, 2024
- 1,330
- Hospital affiliations
- 2
- Industry payments
- $200
- Practice address
- 1 Quality Drive, Vacaville, CA 95688
- Practice phone
- Call (707) 624-4000
- 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
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Dr. Edwin Jonathan Chiu is a nephrologist in Vacaville, California
Dr. Chiu practices at Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente.
Dr. Chiu's NPI, 1659392223, was assigned on July 21, 2006. Dr. Chiu graduated from University of Rochester Medical Center in 2001. Dr. Chiu holds California license A96262.
- NPI
- 1659392223NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597767020
- NPI enumeration date
- July 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (707) 624-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Edwin Jonathan Chiu practices at Vacaville Medical Center in Vacaville, California
Dr. Chiu's primary practice is Vacaville Medical Center, at 1 Quality Drive, Vacaville, CA 95688 in Solano County. The practice phone is (707) 624-4000.
- Vacaville Medical Center1 Quality Drive, Vacaville, CA 95688 · Solano CountyPhone(707) 624-4000
Source: Dmand AI Affiliation Data
Dr. Edwin Jonathan Chiu is affiliated with 6 sites of care and 2 medical groups
Dr. Chiu's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. Dr. Chiu is also affiliated with Vallejo Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chiu to 2 more dialysis centers, 1 clinical lab, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Edwin Jonathan Chiu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chiu practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vacaville Medical Center | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Edwin Jonathan Chiu is one of 1,401 nephrologists in California
Nephrology is Dr. Chiu's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. 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 Texas.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Texas license
Clinical focus
Dmand AI lists chronic kidney disease and kidney disease among the conditions Dr. Chiu treats.
Nephrologists near Dr. Chiu
Counts of nephrologists 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. Edwin Jonathan Chiu billed Medicare for 52 services in 2024
CMS data shows 52 Medicare services from Dr. Chiu across 1 procedure code in 2024, for 24 Medicare patients. Medicare paid $3,466 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chiu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 532024: 522%
Dr. Chiu compared with the California median for nephrologists, 2024
- Dr. Chiu
- California median
- Medicare services
- 52vs 1,08495% below
- Medicare patients
- 24vs 30792% below
- Part D claims
- 1,132vs 95519% above
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Chiu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chiu and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Edwin Jonathan Chiu treated 24 Medicare patients in 2024, average age 61
CMS counts 24 Medicare patients who saw Dr. Chiu in 2024. 75% of them have chronic kidney disease, and 75% have high blood pressure. 50% are also on Medicaid. Their average risk score is 6.07, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chiu's median patient age at 69, with 44% women.
Chronic conditions among Dr. Chiu's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- Diabetes63%
- High cholesterol54%
- Heart failure46%
- Mood disorders46%
Share of Medicare patients with each condition. A patient can have several.
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 69
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Edwin Jonathan Chiu wrote 1,330 Medicare Part D claims in 2024
In 2024, Dr. Chiu wrote 1,330 Medicare Part D claims for 254 patients. 90% of them were for generic drugs. CMS names the drug for 1,132 of them, across 34 drugs with 11 or more claims each, at $159,344 in total drug cost. In 2023, CMS named 1,132 claims across 31 drugs.
Dr. Chiu's Part D claims by kind of drug, 2024
- Generic1,196 claims90%
- Brand-name and other134 claims10%
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.
Drug classes CMS tracks in Dr. Chiu's Part D claims, 2024
- Antibiotics2%22 of 1,330 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: 1,1322024: 1,132No change
Drugs named by CMS: 34 in 2024, 31 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
Dr. Edwin Jonathan Chiu offers telehealth to Medicare patients
Dr. Chiu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chiu as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Edwin Jonathan Chiu received $200 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Chiu from 1 drug or device company in 2021. Speaker and faculty fees make up the largest share, 100% of the total. Relypsa, Inc. paid the most, $200.
Companies that paid Dr. Chiu the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Edwin Jonathan Chiu has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Chiu, most recently CMS Stage 1 2012 in 2012.
Awards and honors for Dr. Chiu
- 2012
- CMS Stage 1 2012
- Undated
- ASN Fellow
Source: Dmand AI Professional Profile Data
Dr. Edwin Jonathan Chiu graduated from University of Rochester Medical Center
Dr. Chiu graduated from University of Rochester Medical Center in 2001. Dr. Chiu is a member of ACP and ASN.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Edwin Jonathan Chiu accepts plans from 2 insurance carriers
Dr. Chiu is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Chiu accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Edwin Jonathan 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Edwin Jonathan 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. Edwin Jonathan Chiu's NPI number?
Dr. Edwin Jonathan Chiu's NPI number is 1659392223. It was assigned on July 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Edwin Jonathan Chiu?
Dr. Edwin Jonathan Chiu is a nephrologist in Vacaville, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Edwin Jonathan Chiu practice?
Dr. Chiu practices at 1 Quality Drive, Vacaville, CA 95688. Dr. Chiu's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. Dmand AI also links Dr. Chiu to 2 dialysis centers, 1 clinical lab, 1 group practice or clinic and 1 medical group.
What is Dr. Edwin Jonathan Chiu's office phone number?
The practice phone on file for Dr. Chiu is (707) 624-4000.
What is Dr. Edwin Jonathan Chiu's medical license number?
Dr. Chiu holds California license A96262, one of the licenses on file in 2 states.
Which states has Dr. Edwin Jonathan Chiu been licensed in?
Dmand AI has state licenses on file for Dr. Chiu in California (2006 to 2026) and Texas (2004 to 2007).
Which hospitals is Dr. Edwin Jonathan Chiu affiliated with?
Dr. Chiu practices at Vacaville Medical Center in Vacaville, California. Dr. Chiu is also affiliated with Vallejo Medical Center.
What medical group is Dr. Edwin Jonathan Chiu part of?
Dr. Chiu is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Chiu to 1 more medical group.
Does Dr. Edwin Jonathan Chiu accept Medicare?
Yes. CMS data shows Dr. Chiu billed Medicare for 52 services in 2024, and Dr. Chiu accepts Medicare assignment.
Does Dr. Edwin Jonathan Chiu offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chiu as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Edwin Jonathan Chiu see?
CMS counts 24 Medicare patients who saw Dr. Chiu in 2024, with an average age of 61.
Is Dr. Edwin Jonathan Chiu board certified?
Yes. Dr. Chiu is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Edwin Jonathan Chiu bill to Medicare?
In 2024, Dr. Chiu's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Edwin Jonathan Chiu go to medical school?
Dr. Chiu graduated from University of Rochester Medical Center in 2001.
What drugs does Dr. Edwin Jonathan Chiu prescribe most?
In 2024 Medicare Part D data, Dr. Chiu's most prescribed drugs by claims were Amlodipine Besylate, Losartan Potassium and Furosemide.
Has Dr. Edwin Jonathan Chiu received payments from drug or device companies?
CMS Open Payments shows $200 in general payments to Dr. Chiu from 1 company from 2021 to 2021. The largest total came from Relypsa, Inc.
How long has Dr. Edwin Jonathan Chiu been practicing?
Dr. Chiu graduated from medical school in 2001, 25 years ago.
What insurance does Dr. Edwin Jonathan Chiu accept?
Dr. Chiu is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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