Dr. William T. Chen, MD
- Medicare services, 2020
- 13
- Part D claims, 2016
- 12
- Hospital affiliations
- 1
- Industry payments
- $675
- Insurance carriers
- 5
- Practice address
- 1200 B Gale Wilson Blvd, Fairfield, CA 94533
- Practice phone
- Call (707) 646-5000
- 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 T. Chen is an otolaryngology/facial plastic surgery physician in Fairfield, California
Dr. Chen practices at NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare.
Dr. Chen's NPI, 1780777292, was assigned on October 2, 2006. Dr. Chen graduated from University of Illinois College of Medicine - Chicago in 1977. Dr. Chen holds California license G42521.
- NPI
- 1780777292NPI Registry (opens in a new tab)
- NPI enumeration date
- October 2, 2006
- NPI status
- Active
- Practice phone
- (707) 646-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William T. Chen practices at NorthBay Medical Center in Fairfield, California
Dr. Chen's primary practice is NorthBay Medical Center, at 1200 B Gale Wilson Blvd, Fairfield, CA 94533 in Solano County. The practice phone is (707) 646-5000.
- NorthBay Medical Center1200 B Gale Wilson Blvd, Fairfield, CA 94533 · Solano CountyPhone(707) 646-5000
Source: Dmand AI Affiliation Data
Dr. William T. Chen is affiliated with 2 sites of care
Dr. Chen's primary practice is NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare. Dmand AI also links Dr. Chen to 1 physician office, 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 T. Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NorthBay Medical Center | Available with a free account |
| +1 more affiliated site | 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 NorthBay Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William T. Chen is one of 107 otolaryngology/facial plastic surgery physicians in California
Otolaryngology/facial plastic surgery is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207YX0905X. Dr. Chen is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery. Dr. Chen is licensed in California.
Specialties and state licenses
- Otolaryngology/facial plastic surgery, CaliforniaPrimary
Otolaryngology/facial plastic surgery physicians near Dr. Chen
Counts of otolaryngology/facial plastic surgery physicians 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 T. Chen billed Medicare for 13 services in 2020
CMS data shows 13 Medicare services from Dr. Chen across 1 procedure code in 2020. Medicare paid $217 for them. Every service was in an office.
Dr. Chen's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Tests and treatments
- 2019: 292020: 1355%
- Office and hospital visits
- 2019: 462020: 0100%
Dr. Chen compared with the California median for otolaryngology/facial plastic surgery physicians, 2020
- Dr. Chen
- California median
- Medicare services
- 13vs 47597% below
- Part D claims
- 12vs 8686% below
Medians across 98 otolaryngology/facial plastic surgery physicians in California with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2020
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 otolaryngology/facial plastic surgery physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William T. Chen's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 56, with 56% women.
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 56
Patient panel by sex, all payers
- Women56%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. William T. Chen wrote 12 Medicare Part D claims in 2016
In 2016, Dr. Chen wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $100 in total drug cost.
Dr. Chen's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William T. Chen received $675 in industry payments from 2016 to 2025
CMS Open Payments shows 15 general payments to Dr. Chen from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Allergan Inc. paid the most, $181.
General payments to Dr. Chen by program year, 2016 to 2025
General payments to Dr. Chen by kind, 2016 to 2025
- Food and beverage$66098%
- Education$142%
Companies that paid Dr. Chen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William T. Chen has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chen.
Awards and honors for Dr. Chen
- Undated
- AAO-HNS Fellow
Source: Dmand AI Professional Profile Data
Dr. William T. Chen graduated from University of Illinois College of Medicine - Chicago
Dr. Chen graduated from University of Illinois College of Medicine - Chicago in 1977. Dr. Chen is a member of NHS.
- Medical school
- Board certified in otolaryngology
Source: Dmand AI Professional Profile Data
Dr. William T. Chen accepts plans from 5 insurance carriers
Dr. Chen is in network with 5 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Chen accepts, by number of carriers
- Medicare5
- PPO5
- HMO2
- POS2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. William T. 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 | 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) |
| 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 T. 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 T. Chen's NPI number?
Dr. William T. Chen's NPI number is 1780777292. It was assigned on October 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William T. Chen?
Dr. William T. Chen is an otolaryngology/facial plastic surgery physician in Fairfield, California. The primary specialty in the NPI Registry is Otolaryngology/Facial Plastic Surgery Physician (taxonomy code 207YX0905X).
Where does Dr. William T. Chen practice?
Dr. Chen practices at 1200 B Gale Wilson Blvd, Fairfield, CA 94533. Dr. Chen's primary practice is NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare. Dmand AI also links Dr. Chen to 1 physician office.
What is Dr. William T. Chen's office phone number?
The practice phone on file for Dr. Chen is (707) 646-5000.
What is Dr. William T. Chen's medical license number?
Dr. Chen holds California license G42521.
Which hospitals is Dr. William T. Chen affiliated with?
Dr. Chen practices at NorthBay Medical Center in Fairfield, California.
Does Dr. William T. Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 13 services in 2020.
Is Dr. William T. Chen board certified?
Yes. Dr. Chen is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery.
What services does Dr. William T. Chen bill to Medicare?
In 2020, Dr. Chen's most billed Medicare services were ear, nose and throat service (92550).
Where did Dr. William T. Chen go to medical school?
Dr. Chen graduated from University of Illinois College of Medicine - Chicago in 1977.
Show 4 more questionsShow fewer questions
What drugs does Dr. William T. Chen prescribe most?
In 2016 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Cephalexin.
Has Dr. William T. Chen received payments from drug or device companies?
CMS Open Payments shows $675 in general payments to Dr. Chen from 7 companies from 2016 to 2025. The largest total came from Allergan Inc.
How long has Dr. William T. Chen been practicing?
Dr. Chen graduated from medical school in 1977, 49 years ago.
What insurance does Dr. William T. Chen accept?
Dr. Chen is in network with 5 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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