Dr. Chun Ouyang, MD, PhD
- Medicare patients, 2024
- 16
- Part D claims, 2024
- 983
- Industry payments
- $22
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. Ouyang'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. Chun Ouyang is an internist in Richmond, California
Dr. Ouyang practices at Richmond Medical Center in Richmond, California.
Dr. Ouyang's NPI, 1336115328, was assigned on February 28, 2006. Dr. Ouyang graduated from Shanghai Jiao Tong University School of Medicine in 1992. Dr. Ouyang's Massachusetts license number on file is 217077.
- NPI
- 1336115328NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860393980
- NPI enumeration date
- February 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chun Ouyang practices at Richmond Medical Center in Richmond, California
Dr. Ouyang's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Chun Ouyang is affiliated with 1 site of care and 1 medical group
Dr. Ouyang's primary practice is Richmond Medical Center in Richmond, California. The medical group on file is The Permanente Medical Group, Inc.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chun Ouyang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ouyang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chun Ouyang is one of 16,751 internists in California
Internal medicine is Dr. Ouyang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ouyang is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Ouyang's licenses on file in 2 states: Massachusetts and California.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
- California license
Clinical focus
Dmand AI lists gastrointestinal bleeding among the conditions Dr. Ouyang treats.
Internists near Dr. Ouyang
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. Chun Ouyang treated 16 Medicare patients in 2024, average age 68
CMS counts 16 Medicare patients who saw Dr. Ouyang in 2024. 69% of them have high blood pressure. Their average risk score is 1.90, 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. Ouyang's median patient age at 60, with 57% women.
Chronic conditions among Dr. Ouyang's Medicare patients, 2024
- High blood pressure69%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ouyang'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
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chun Ouyang wrote 983 Medicare Part D claims in 2024
In 2024, Dr. Ouyang wrote 983 Medicare Part D claims for 477 patients. 87% of them were for generic drugs. CMS names the drug for 884 of them, across 23 drugs with 11 or more claims each, at $248,427 in total drug cost. In 2023, CMS named 928 claims across 17 drugs.
Dr. Ouyang's Part D claims by kind of drug, 2024
- Generic856 claims87%
- Brand-name127 claims13%
Dr. Ouyang'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. Ouyang's Part D claims, 2024
- Opioids3%25 of 983 claims
- Antibiotics4%42 of 983 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: 9282024: 8845%
Drugs named by CMS: 23 in 2024, 17 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
How Dr. Chun Ouyang takes part in Medicare
Dr. Ouyang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Chun Ouyang received $22 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Ouyang from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. CapsoVision, Inc. paid the most, $22.
Companies that paid Dr. Ouyang the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chun Ouyang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ouyang, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Ouyang
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Chun Ouyang graduated from Shanghai Jiao Tong University School of Medicine
Dr. Ouyang graduated from Shanghai Jiao Tong University School of Medicine in 1992.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Chun Ouyang accepts plans from 2 insurance carriers
Dr. Ouyang 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. Ouyang accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chun Ouyang'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 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)Doctors and Clinicians Utilization Data (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. Chun Ouyang
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. Chun Ouyang's NPI number?
Dr. Chun Ouyang's NPI number is 1336115328. It was assigned on February 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chun Ouyang?
Dr. Chun Ouyang is an internist in Richmond, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Chun Ouyang practice?
Dr. Ouyang practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Ouyang's primary practice is Richmond Medical Center in Richmond, California.
What is Dr. Chun Ouyang's office phone number?
The practice phone on file for Dr. Ouyang is (510) 307-1555.
What is Dr. Chun Ouyang's medical license number?
Dr. Ouyang's Massachusetts license number on file is 217077, one of the licenses on file in 2 states.
Which states has Dr. Chun Ouyang been licensed in?
Dmand AI has state licenses on file for Dr. Ouyang in Massachusetts (2003 to 2008) and California (2007 to 2027).
What medical group is Dr. Chun Ouyang part of?
Dr. Ouyang is linked to The Permanente Medical Group, Inc.
Does Dr. Chun Ouyang accept Medicare?
Yes. CMS lists Dr. Ouyang as accepting Medicare assignment.
How many Medicare patients does Dr. Chun Ouyang see?
CMS counts 16 Medicare patients who saw Dr. Ouyang in 2024, with an average age of 68.
Is Dr. Chun Ouyang board certified?
Yes. Dr. Ouyang is board certified in gastroenterology by the American Board of Internal Medicine.
Show 5 more questionsShow fewer questions
Where did Dr. Chun Ouyang go to medical school?
Dr. Ouyang graduated from Shanghai Jiao Tong University School of Medicine in 1992.
What drugs does Dr. Chun Ouyang prescribe most?
In 2024 Medicare Part D data, Dr. Ouyang's most prescribed drugs by claims were Gavilyte-C, Cholestyramine and Omeprazole.
Has Dr. Chun Ouyang received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Dr. Ouyang from 1 company from 2024 to 2024. The largest total came from CapsoVision, Inc.
How long has Dr. Chun Ouyang been practicing?
Dr. Ouyang graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Chun Ouyang accept?
Dr. Ouyang 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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