Dr. Chau Quynh Bui, DO
- Medicare services, 2024
- 24
- Medicare patients, 2024
- 29
- Part D claims, 2024
- 1,550
- Industry payments
- $8,531
- Affiliated sites
- 2
- Practice address
- 3400 Data Dr, Rancho Cordova, CA 95670
- Practice phone
- Call (818) 885-5480
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dignity Health Medical Group - Northridge, a Service of Dignity Health
Rancho Cordova, California
Find Dr. Bui'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. Chau Quynh Bui is a hospitalist in Rancho Cordova, California
Dr. Bui practices at Dignity Health Medical Group - Northridge, a Service of Dignity Health in Rancho Cordova, California.
Dr. Bui's NPI, 1194142562, was assigned on March 24, 2014. Dr. Bui graduated from Touro University California - Vallejo in 2014. Dr. Bui holds California license 20A14247.
- NPI
- 1194142562NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890086573
- NPI enumeration date
- March 24, 2014
- NPI status
- Active
- Practice phone
- (818) 885-5480
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Chau Quynh Bui practices at Dignity Health Medical Group - Northridge, a Service of Dignity Health in Rancho Cordova, California
Dr. Bui's primary practice is Dignity Health Medical Group - Northridge, a Service of Dignity Health, at 3400 Data Dr, Rancho Cordova, CA 95670 in Sacramento County. The practice phone is (818) 885-5480.
- Dignity Health Medical Group - Northridge, a Service of Dignity Health3400 Data Dr, Rancho Cordova, CA 95670 · Sacramento CountyPhone(818) 885-5480
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Chau Quynh Bui is affiliated with 3 sites of care and 2 medical groups
Dr. Bui's primary practice is Dignity Health Medical Group - Northridge, a Service of Dignity Health in Rancho Cordova, California. The medical group on file is Mercy Medical Group. Dmand AI also links Dr. Bui to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chau Quynh Bui's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bui practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health Medical Group - Northridge, a Service of Dignity Health | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chau Quynh Bui is one of 3,186 hospitalists in California
Hospitalist is Dr. Bui's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Bui is board certified in family medicine by the American Board of Family Medicine. Dr. Bui is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Clinical focus
Dmand AI lists conjunctivitis among the conditions Dr. Bui treats.
Hospitalists near Dr. Bui
Counts of hospitalists 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. Chau Quynh Bui billed Medicare for 24 services in 2024
CMS data shows 24 Medicare services from Dr. Bui across 2 procedure codes in 2024, all of them office visits, for 29 Medicare patients. Medicare paid $1,984 for them. Every service was in an office.
Dr. Bui's Medicare services by type, 2022 to 2024
- 2022
- 2024
- Office and hospital visits
- 2022: 782024: 2469%
Dr. Bui compared with the California median for hospitalists, 2024
- Dr. Bui
- California median
- Medicare services
- 24vs 43094% below
- Medicare patients
- 29vs 20186% below
- Part D claims
- 1,214vs 6917.6 times
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Bui'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. Bui and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chau Quynh Bui treated 29 Medicare patients in 2024, average age 72
CMS counts 29 Medicare patients who saw Dr. Bui in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. 62% are also on Medicaid. Their average risk score is 1.65, 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. Bui's median patient age at 36, with 70% women.
Dr. Bui's Medicare patients by sex, 2024
- Women1759%
- Men1241%
Chronic conditions among Dr. Bui's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis72%
- Ischemic heart disease59%
- Diabetes55%
- Chronic kidney disease48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bui's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women70%
- Men30%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chau Quynh Bui wrote 1,550 Medicare Part D claims in 2024
In 2024, Dr. Bui wrote 1,550 Medicare Part D claims for 191 patients. 84% of them were for generic drugs. CMS names the drug for 1,214 of them, across 38 drugs with 11 or more claims each, at $183,890 in total drug cost. In 2020, CMS named 36 claims across 3 drugs.
Dr. Bui's Part D claims by kind of drug, 2024
- Generic1,297 claims84%
- Brand-name237 claims15%
- Other16 claims1%
Dr. Bui'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. Bui's Part D claims, 2024
- Antibiotics5%79 of 1,550 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, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 362024: 1,2143272%
Drugs named by CMS: 38 in 2024, 3 in 2020.
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. Chau Quynh Bui received $8,531 in industry payments from 2018 to 2025
CMS Open Payments shows 107 general payments to Dr. Bui from 28 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 97% of the total. AstraZeneca Pharmaceuticals LP paid the most, $2,169.
General payments to Dr. Bui by program year, 2018 to 2025
General payments to Dr. Bui by kind, 2018 to 2025
- Food and beverage$8,25697%
- Speaker and faculty fees$2753%
Companies that paid Dr. Bui the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chau Quynh Bui graduated from Touro University California - Vallejo
Dr. Bui graduated from Touro University California - Vallejo in 2014. Dr. Bui is a member of AOA.
- Medical school
- Board certified in family medicine
- Board certified in sports medicine
Source: Dmand AI Professional Profile Data
Dr. Chau Quynh Bui accepts plans from 14 insurance carriers
Dr. Bui is in network with 14 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- Aetna
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Bui accepts, by number of carriers
- PPO9
- HMO7
- Medicare6
- EPO3
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Chau Quynh Bui'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Chau Quynh Bui
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. Chau Quynh Bui's NPI number?
Dr. Chau Quynh Bui's NPI number is 1194142562. It was assigned on March 24, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Chau Quynh Bui?
Dr. Chau Quynh Bui is a hospitalist in Rancho Cordova, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Chau Quynh Bui practice?
Dr. Bui practices at 3400 Data Dr, Rancho Cordova, CA 95670. Dr. Bui's primary practice is Dignity Health Medical Group - Northridge, a Service of Dignity Health in Rancho Cordova, California. Dmand AI also links Dr. Bui to 2 group practices and clinics and 1 medical group.
What is Dr. Chau Quynh Bui's office phone number?
The practice phone on file for Dr. Bui is (818) 885-5480.
What is Dr. Chau Quynh Bui's medical license number?
Dr. Bui holds California license 20A14247.
What medical group is Dr. Chau Quynh Bui part of?
Dr. Bui is linked to Mercy Medical Group. Dmand AI links Dr. Bui to 1 more medical group.
Does Dr. Chau Quynh Bui accept Medicare?
Yes. CMS data shows Dr. Bui billed Medicare for 24 services in 2024.
How many Medicare patients does Dr. Chau Quynh Bui see?
CMS counts 29 Medicare patients who saw Dr. Bui in 2024, with an average age of 72.
Is Dr. Chau Quynh Bui board certified?
Yes. Dr. Bui is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Chau Quynh Bui bill to Medicare?
In 2024, Dr. Bui's most billed Medicare services were office visit, established patient (99213) and office visit, new patient (99203).
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Where did Dr. Chau Quynh Bui go to medical school?
Dr. Bui graduated from Touro University California - Vallejo in 2014.
What drugs does Dr. Chau Quynh Bui prescribe most?
In 2024 Medicare Part D data, Dr. Bui's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Chau Quynh Bui received payments from drug or device companies?
CMS Open Payments shows $8,531 in general payments to Dr. Bui from 28 companies from 2018 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Chau Quynh Bui been practicing?
Dr. Bui graduated from medical school in 2014, 12 years ago.
What insurance does Dr. Chau Quynh Bui accept?
Dr. Bui is in network with 14 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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