Derrick Lai
- Medicare patients, 2024
- 18
- Part D claims, 2024
- 33
- Industry payments
- $224
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 4605 Brockton Ave, Riverside, CA 92506
- Practice phone
- Call (951) 686-4911
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverside Eye Specialists Medical Group Inc.
Riverside, California
Find Derrick Lai'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.
Derrick Lai is an optometrist in Riverside, California
Derrick Lai practices at Riverside Eye Specialists Medical Group Inc. in Riverside, California.
Derrick Lai's NPI, 1235825886, was assigned on April 17, 2023. Derrick Lai graduated from University of California - School of Optometry in 2023. Derrick Lai holds California license OPT35491-TLG.
- NPI
- 1235825886NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305387481
- NPI enumeration date
- April 17, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 686-4911
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Derrick Lai practices at Riverside Eye Specialists Medical Group Inc. in Riverside, California
Derrick Lai's primary practice is Riverside Eye Specialists Medical Group Inc., at 4605 Brockton Ave, Riverside, CA 92506 in Riverside County. The practice phone is (951) 686-4911.
- Riverside Eye Specialists Medical Group Inc.4605 Brockton Ave, Riverside, CA 92506 · Riverside CountyPhone(951) 686-4911
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Derrick Lai is affiliated with 2 sites of care and 1 medical group
Derrick Lai's primary practice is Riverside Eye Specialists Medical Group Inc. in Riverside, California. Dmand AI also links Derrick Lai to 1 group practice or clinic and 1 medical group, 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 Derrick Lai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Derrick Lai practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Eye Specialists Medical Group Inc. | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Derrick Lai is one of 7,206 optometrists in California
Optometrist is Derrick Lai's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Derrick Lai is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Derrick Lai
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
Derrick Lai treated 18 Medicare patients in 2024, average age 75
CMS counts 18 Medicare patients who saw Derrick Lai in 2024. 72% of them have high blood pressure, and 67% have high cholesterol. Their average risk score is 1.81, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Derrick Lai's median patient age at 70, with 60% women.
Chronic conditions among Derrick Lai's Medicare patients, 2024
- High blood pressure72%
- High cholesterol67%
Share of Medicare patients with each condition. A patient can have several.
Derrick Lai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Derrick Lai wrote 33 Medicare Part D claims in 2024
In 2024, Derrick Lai wrote 33 Medicare Part D claims for 21 patients. 48% of them were for generic drugs.
Derrick Lai's Part D claims by kind of drug, 2024
- Generic16 claims48%
- Brand-name17 claims52%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Derrick Lai takes part in Medicare
Derrick Lai 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)
For MedTech and pharma teams
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Derrick Lai received $224 in industry payments in 2025
CMS Open Payments shows 4 general payments to Derrick Lai from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $125.
Companies that paid Derrick Lai the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Derrick Lai graduated from University of California - School of Optometry
Derrick Lai graduated from University of California - School of Optometry in 2023.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Derrick Lai'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 (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) |
| 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 Derrick Lai
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Derrick Lai's NPI number?
Derrick Lai's NPI number is 1235825886. It was assigned on April 17, 2023, and it is active in the NPI Registry.
What does Derrick Lai specialize in?
Derrick Lai is an optometrist in Riverside, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Derrick Lai practice?
Derrick Lai practices at 4605 Brockton Ave, Riverside, CA 92506. Derrick Lai's primary practice is Riverside Eye Specialists Medical Group Inc. in Riverside, California. Dmand AI also links Derrick Lai to 1 group practice or clinic and 1 medical group.
What is Derrick Lai's office phone number?
The practice phone on file for Derrick Lai is (951) 686-4911.
What is Derrick Lai's medical license number?
Derrick Lai holds California license OPT35491-TLG.
Does Derrick Lai accept Medicare?
Yes. CMS lists Derrick Lai as accepting Medicare assignment.
How many Medicare patients does Derrick Lai see?
CMS counts 18 Medicare patients who saw Derrick Lai in 2024, with an average age of 75.
Where did Derrick Lai go to medical school?
Derrick Lai graduated from University of California - School of Optometry in 2023.
Has Derrick Lai received payments from drug or device companies?
CMS Open Payments shows $224 in general payments to Derrick Lai from 4 companies from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has Derrick Lai been practicing?
Derrick Lai graduated from medical school in 2023, 3 years ago.
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