Warren Chen
- Industry payments
- $76
- Affiliated sites
- 3
- Medical groups
- 4
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 111 E 4th St, Alton, IL 62002
- Practice phone
- Call (830) 896-2600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aeg Texas Professional
Alton, Illinois
Find Warren 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.
Warren Chen is an optometrist in Alton, Illinois
Warren Chen practices at Aeg Texas Professional in Alton, Illinois.
Warren Chen's NPI, 1275193468, was assigned on June 19, 2019. Warren Chen graduated from University of Houston - College of Optometry in 2019. Warren Chen holds Texas license 9694.
- NPI
- 1275193468NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789011347
- NPI enumeration date
- June 19, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (830) 896-2600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Warren Chen practices at Aeg Texas Professional in Alton, Illinois
Warren Chen's primary practice is Aeg Texas Professional, at 111 E 4th St, Alton, IL 62002 in Madison County. The practice phone is (830) 896-2600.
- Aeg Texas Professional111 E 4th St, Alton, IL 62002 · Madison CountyPhone(830) 896-2600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Warren Chen is affiliated with 4 sites of care and 4 medical groups
Warren Chen's primary practice is Aeg Texas Professional in Alton, Illinois. Dmand AI also links Warren Chen to 4 medical groups and 3 group practices and clinics, 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 Warren Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Warren Chen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aeg Texas Professional | Available with a free account |
| +3 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Warren Chen is one of 2,194 optometrists in Illinois
Optometrist is Warren Chen's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Warren Chen is licensed in Texas.
Specialties and state licenses
- Optometrist, TexasPrimary
Optometrists near Warren Chen
Counts of optometrists 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
Warren Chen's patients have a median age of 45
Across all payers, Dmand AI patient panel data puts Warren Chen's median patient age at 45, with 57% women.
Warren 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 45
Patient panel by sex, all payers
- Women57%
- Men43%
Source: Dmand AI Patient Panel Data
How Warren Chen takes part in Medicare
Warren Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Warren Chen received $76 in industry payments in 2025
CMS Open Payments shows 2 general payments to Warren Chen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $76.
Companies that paid Warren Chen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Warren Chen graduated from University of Houston - College of Optometry
Warren Chen graduated from University of Houston - College of Optometry in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Warren 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 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 Data |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Warren 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 Warren Chen's NPI number?
Warren Chen's NPI number is 1275193468. It was assigned on June 19, 2019, and it is active in the NPI Registry.
What does Warren Chen specialize in?
Warren Chen is an optometrist in Alton, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Warren Chen practice?
Warren Chen practices at 111 E 4th St, Alton, IL 62002. Warren Chen's primary practice is Aeg Texas Professional in Alton, Illinois. Dmand AI also links Warren Chen to 4 medical groups and 3 group practices and clinics.
What is Warren Chen's office phone number?
The practice phone on file for Warren Chen is (830) 896-2600.
What is Warren Chen's medical license number?
Warren Chen holds Texas license 9694.
Does Warren Chen accept Medicare?
Yes. CMS lists Warren Chen as accepting Medicare assignment.
Where did Warren Chen go to medical school?
Warren Chen graduated from University of Houston - College of Optometry in 2019.
Has Warren Chen received payments from drug or device companies?
CMS Open Payments shows $76 in general payments to Warren Chen from 1 company from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Warren Chen been practicing?
Warren Chen graduated from medical school in 2019, 7 years ago.
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