Diana Chen, OD
- Industry payments
- $18
- Affiliated sites
- 3
- Medical groups
- 2
- State licenses
- 2
- Year NPI issued
- 2018
- Practice address
- 1855 San Miguel Dr Ste 28 Suite 28, Walnut Creek, CA 94596-5298
- Practice phone
- Call (925) 935-8820
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Walnut Creek Eye Medical Group
Eye care practice · Walnut Creek, California
Find Diana 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.
Diana Chen is an optometrist in Long Beach, California
Diana Chen practices at Walnut Creek Eye Medical Group in Walnut Creek, California.
Diana Chen's NPI, 1962989863, was assigned on July 24, 2018. Diana Chen holds California license 34271.
- NPI
- 1962989863NPI Registry (opens in a new tab)
- NPI enumeration date
- July 24, 2018
- NPI status
- Active
- Practice phone
- (925) 935-8820
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Diana Chen practices in Walnut Creek and Long Beach
Diana Chen's primary practice is Walnut Creek Eye Medical Group, at 1855 San Miguel Dr Ste 28 Suite 28, Walnut Creek, CA 94596-5298. The practice phone is (925) 935-8820. The NPI Registry lists Diana Chen's practice address as 3800 Kilroy Airport Way, Long Beach, CA 90806.
- Walnut Creek Eye Medical GroupPrimary1855 San Miguel Dr Ste 28 Suite 28, Walnut Creek, CA 94596-5298Phone(925) 935-8820
- NPI Registry address3800 Kilroy Airport Way, Long Beach, CA 90806 · Los Angeles County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Diana Chen is affiliated with 3 sites of care and 2 medical groups
Diana Chen's primary practice is Walnut Creek Eye Medical Group in Walnut Creek, California. Dmand AI also links Diana Chen to 2 medical groups, 1 physician office and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Diana Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Diana Chen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Walnut Creek Eye Medical Group | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Diana Chen is one of 7,206 optometrists in California
Optometrist is Diana Chen's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Dmand AI has Diana Chen's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
- Texas license
Optometrists near Diana 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
Diana Chen's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Diana Chen's median patient age at 65, with 67% women.
Diana 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 65
Patient panel by sex, all payers
- Women67%
- Men0%
Source: Dmand AI Patient Panel Data
Diana Chen received $18 in industry payments in 2025
CMS Open Payments shows 1 general payment to Diana Chen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $18.
Companies that paid Diana 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
Sources for Diana 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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Diana 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 Diana Chen's NPI number?
Diana Chen's NPI number is 1962989863. It was assigned on July 24, 2018, and it is active in the NPI Registry.
What does Diana Chen specialize in?
Diana Chen is an optometrist in Long Beach, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Diana Chen practice?
Diana Chen practices at 1855 San Miguel Dr Ste 28 Suite 28, Walnut Creek, CA 94596-5298. Diana Chen also practices at 3800 Kilroy Airport Way, Long Beach, CA 90806. Diana Chen's primary practice is Walnut Creek Eye Medical Group in Walnut Creek, California. Dmand AI also links Diana Chen to 2 medical groups, 1 physician office and 1 group practice or clinic.
What is Diana Chen's office phone number?
The practice phone on file for Diana Chen is (925) 935-8820.
What is Diana Chen's medical license number?
Diana Chen holds California license 34271, one of the licenses on file in 2 states.
Which states has Diana Chen been licensed in?
Dmand AI has state licenses on file for Diana Chen in California and Texas.
Has Diana Chen received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Diana Chen from 1 company from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has Diana Chen been practicing?
Diana Chen graduated from medical school in 2018, 8 years ago.
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