Dr. William K.y. Chen, MD
- Medicare services, 2024
- 985
- Medicare patients, 2024
- 366
- Part D claims, 2024
- 17
- Hospital affiliations
- 2
- Industry payments
- $91
- Practice address
- One Medical Plaza, Roseville, CA 95661
- Practice phone
- Call (916) 781-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chen'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. William K.y. Chen is a gastroenterologist in Roseville, California
Dr. Chen practices at Sutter Roseville Medical Center in Roseville, California, part of Sutter Health.
Dr. Chen's NPI, 1982744942, was assigned on February 7, 2007. Dr. Chen graduated from Vagelos College of Physicians and Surgeons in 1983. Dr. Chen holds California license G57578.
- NPI
- 1982744942NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991782641
- NPI enumeration date
- February 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 781-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William K.y. Chen practices at 2 locations in Roseville, California
Dr. Chen's primary practice is Sutter Roseville Medical Center, at One Medical Plaza, Roseville, CA 95661 in Placer County. The practice phone is (916) 781-1000. Dr. Chen also practices at Sutter Roseville Medical Center, 1 Medical Plz, Roseville, CA 95661.
- Sutter Roseville Medical CenterPrimaryOne Medical Plaza, Roseville, CA 95661 · Placer CountyPhone(916) 781-1000
- Sutter Roseville Medical Center1 Medical Plz, Roseville, CA 95661 · Placer CountyPhone(800) 353-3369
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. William K.y. Chen is affiliated with 3 sites of care and 1 medical group
Dr. Chen's primary practice is Sutter Roseville Medical Center in Roseville, California, part of Sutter Health. Dr. Chen is also affiliated with Sutter Amador Hospital. The medical group on file is SGMF Radiology. Dmand AI also links Dr. Chen to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William K.y. Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter Roseville Medical Center | Available with a free account |
| +2 more affiliated sites | 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 Sutter Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William K.y. Chen is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Chen is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Chen is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists esophagus, stomach, or upper small intestine surgery, gastrointestinal bleeding, liver disease, pancreas or bile duct endoscopy (ERCP) and upper GI endoscopy among the conditions Dr. Chen treats.
Gastroenterologists near Dr. Chen
Counts of gastroenterologists 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. William K.y. Chen billed Medicare for 985 services in 2024
CMS data shows 985 Medicare services from Dr. Chen across 20 procedure codes in 2024, for 366 Medicare patients. Medicare paid $94,032 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chen's Medicare services by type, 2024
- Surgery482
- Office and hospital visits465
- Imaging38
Dr. Chen compared with the California median for gastroenterologists, 2024
- Dr. Chen
- California median
- Medicare services
- 985vs 58668% above
- Medicare patients
- 366vs 30221% above
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Chen'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.
Need commercial claims for Dr. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William K.y. Chen treated 366 Medicare patients in 2024, average age 76
CMS counts 366 Medicare patients who saw Dr. Chen in 2024. The largest group is 75 to 84, with 127 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.35, 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. Chen's median patient age at 62, with 52% women.
Dr. Chen's Medicare patients by age, 2024
Dr. Chen's Medicare patients by sex, 2024
- Women19052%
- Men17648%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Chronic kidney disease50%
- Ischemic heart disease48%
- Mood disorders47%
- Diabetes46%
- Depression44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen'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
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William K.y. Chen wrote 17 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 17 Medicare Part D claims.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William K.y. Chen ranks in the 98th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 516 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Chen, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Chen ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 98th percentile516 procedures
- Colonoscopy
- 87th percentile140 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. William K.y. Chen received $91 in industry payments from 2024 to 2025
CMS Open Payments shows 4 general payments to Dr. Chen from 3 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $57.
General payments to Dr. Chen by program year, 2024 to 2025
Companies that paid Dr. Chen the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William K.y. Chen has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chen, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Chen
- 2014
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. William K.y. Chen graduated from Vagelos College of Physicians and Surgeons
Dr. Chen graduated from Vagelos College of Physicians and Surgeons in 1983.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. William K.y. Chen accepts plans from 13 insurance carriers
Dr. Chen is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Chen accepts, by number of carriers
- PPO9
- HMO6
- Medicare6
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. William K.y. Chen'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 Affiliation DataDmand AI Practice 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 (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. William K.y. Chen
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. William K.y. Chen's NPI number?
Dr. William K.y. Chen's NPI number is 1982744942. It was assigned on February 7, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. William K.y. Chen?
Dr. William K.y. Chen is a gastroenterologist in Roseville, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. William K.y. Chen practice?
Dr. Chen practices at One Medical Plaza, Roseville, CA 95661. Dr. Chen also practices at 1 Medical Plz, Roseville, CA 95661. Dr. Chen's primary practice is Sutter Roseville Medical Center in Roseville, California, part of Sutter Health. Dmand AI also links Dr. Chen to 1 group practice or clinic.
What is Dr. William K.y. Chen's office phone number?
The practice phone on file for Dr. Chen is (916) 781-1000.
What is Dr. William K.y. Chen's medical license number?
Dr. Chen holds California license G57578.
Which hospitals is Dr. William K.y. Chen affiliated with?
Dr. Chen practices at Sutter Roseville Medical Center in Roseville, California. Dr. Chen is also affiliated with Sutter Amador Hospital.
What medical group is Dr. William K.y. Chen part of?
Dr. Chen is linked to SGMF Radiology.
Does Dr. William K.y. Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 985 services in 2024, and Dr. Chen accepts Medicare assignment.
How many Medicare patients does Dr. William K.y. Chen see?
CMS counts 366 Medicare patients who saw Dr. Chen in 2024, with an average age of 76.
Is Dr. William K.y. Chen board certified?
Yes. Dr. Chen is board certified in gastroenterology by the American Board of Internal Medicine.
Show 5 more questionsShow fewer questions
What services does Dr. William K.y. Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were hospital inpatient care (99222), hospital inpatient care (99232) and surgery: digestive system (43239).
Where did Dr. William K.y. Chen go to medical school?
Dr. Chen graduated from Vagelos College of Physicians and Surgeons in 1983.
Has Dr. William K.y. Chen received payments from drug or device companies?
CMS Open Payments shows $91 in general payments to Dr. Chen from 3 companies from 2024 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. William K.y. Chen been practicing?
Dr. Chen graduated from medical school in 1983, 43 years ago.
What insurance does Dr. William K.y. Chen accept?
Dr. Chen is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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