Dr. Elson Lai, MD
- Medicare services, 2024
- 1,357
- Medicare patients, 2024
- 453
- Part D claims, 2024
- 1,725
- MIPS score, 2024
- 71
- Industry payments
- $89,568
- Practice address
- 9428 Valley Blvd, Rosemead, CA 91770
- Practice phone
- Call (626) 921-2889
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rosemead Surgical Services LLC
Rosemead, California
Find Dr. 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.
Dr. Elson Lai is an ophthalmologist in Rosemead, California
Dr. Lai practices at Rosemead Surgical Services LLC in Rosemead, California.
Dr. Lai's NPI, 1750549192, was assigned on May 31, 2008. Dr. Lai graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2007. Dr. Lai holds California license A116241.
- NPI
- 1750549192NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890972764
- NPI enumeration date
- May 31, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 921-2889
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Elson Lai practices at Rosemead Surgical Services LLC in Rosemead, California
Dr. Lai's primary practice is Rosemead Surgical Services LLC, at 9428 Valley Blvd, Rosemead, CA 91770 in Los Angeles County. The practice phone is (626) 921-2889.
- Rosemead Surgical Services LLC9428 Valley Blvd, Rosemead, CA 91770 · Los Angeles CountyPhone(626) 921-2889
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Elson Lai is affiliated with 2 sites of care and 1 medical group
Dr. Lai's primary practice is Rosemead Surgical Services LLC in Rosemead, California. Dmand AI also links Dr. 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 Dr. Elson Lai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lai practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rosemead Surgical Services LLC | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Elson Lai is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Lai's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Lai is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Lai's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- New York license
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eye infection or inflammation, eyelid inflammation and glaucoma among the conditions Dr. Lai treats.
Ophthalmologists near Dr. Lai
Counts of ophthalmologists 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. Elson Lai billed Medicare for 1,357 services in 2024
CMS data shows 1,357 Medicare services from Dr. Lai across 17 procedure codes in 2024, for 453 Medicare patients. Medicare paid $120,830 for them.
Dr. Lai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 8722024: 875No change
- Office and hospital visits
- 2023: 2692024: 2651%
- Surgery
- 2023: 862024: 11534%
- Imaging
- 2023: 932024: 10210%
Where Dr. Lai's Medicare services took place, 2024
- In an office1,30196%
- In a facility564%
Dr. Lai compared with the California median for ophthalmologists, 2024
- Dr. Lai
- California median
- Medicare services
- 1,357vs 1,07926% above
- Medicare patients
- 453vs 4218% above
- Part D claims
- 1,681vs 6182.7 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Lai'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Elson Lai treated 453 Medicare patients in 2024, average age 75
CMS counts 453 Medicare patients who saw Dr. Lai in 2024. The largest group is 65 to 74, with 242 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 51% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lai's median patient age at 68, with 56% women.
Dr. Lai's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lai's Medicare patients by sex, 2024
- Women27661%
- Men17739%
Chronic conditions among Dr. Lai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes43%
- Arthritis39%
- Osteoporosis36%
- Chronic kidney disease33%
- Ischemic heart disease25%
- COPD14%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 68
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Elson Lai wrote 1,725 Medicare Part D claims in 2024
In 2024, Dr. Lai wrote 1,725 Medicare Part D claims for 396 patients. 55% of them were for generic drugs. CMS names the drug for 1,681 of them, across 18 drugs with 11 or more claims each, at $238,765 in total drug cost. In 2023, CMS named 1,795 claims across 17 drugs.
Dr. Lai's Part D claims by kind of drug, 2024
- Generic951 claims55%
- Brand-name774 claims45%
Dr. Lai's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,7952024: 1,6816%
Drugs named by CMS: 18 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Elson Lai scored 71 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 71 out of 100 for Dr. Lai for performance year 2024, reported individually. Dr. Lai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 100 procedures of cataract surgery by Dr. Lai, more than 74% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Lai's MIPS scores, performance year 2024
- 71of 100Final score
- 44.4of 100Quality
- 88of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Lai ranks in Medicare procedure volume
- Cataract surgery
- 74th percentile100 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Elson Lai received $89,568 in industry payments from 2016 to 2025
CMS Open Payments shows 502 general payments to Dr. Lai from 38 drug and device companies from 2016 to 2025. Charitable contributions make up the largest share, 35% of the total. Valeant Pharmaceuticals International paid the most, $31,429.
General payments to Dr. Lai by program year, 2016 to 2025
General payments to Dr. Lai by kind, 2016 to 2025
- Charitable contributions$31,03035%
- Food and beverage$26,27029%
- Speaker and faculty fees$16,15018%
- Consulting fees$12,16214%
- Other$3,8654%
Companies that paid Dr. Lai 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. Elson Lai has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Lai.
Awards and honors for Dr. Lai
- Undated
- AOA
- Phi Betta Kappa
Source: Dmand AI Professional Profile Data
Dr. Elson Lai graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Lai graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2007. Dr. Lai is a member of American Academy of Ophthalmology.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Elson Lai accepts plans from 18 insurance carriers
Dr. Lai is in network with 18 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Humana
- Alliant Health Plans
- +10 more carriersWith a free account
Plan types Dr. Lai accepts, by number of carriers
- HMO12
- PPO10
- Medicare8
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Elson 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 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 and Drug (CMS) (opens in a new tab)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)Clinician Public Reporting: Overall MIPS Performance (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. Elson 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 Dr. Elson Lai's NPI number?
Dr. Elson Lai's NPI number is 1750549192. It was assigned on May 31, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Elson Lai?
Dr. Elson Lai is an ophthalmologist in Rosemead, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Elson Lai practice?
Dr. Lai practices at 9428 Valley Blvd, Rosemead, CA 91770. Dr. Lai's primary practice is Rosemead Surgical Services LLC in Rosemead, California. Dmand AI also links Dr. Lai to 1 group practice or clinic and 1 medical group.
What is Dr. Elson Lai's office phone number?
The practice phone on file for Dr. Lai is (626) 921-2889.
What is Dr. Elson Lai's medical license number?
Dr. Lai holds California license A116241, one of the licenses on file in 2 states.
Which states has Dr. Elson Lai been licensed in?
Dmand AI has state licenses on file for Dr. Lai in California (2011 to 2026) and New York (2014 to 2015).
Does Dr. Elson Lai accept Medicare?
Yes. CMS data shows Dr. Lai billed Medicare for 1,357 services in 2024, and Dr. Lai accepts Medicare assignment.
What is Dr. Elson Lai's MIPS score?
Dr. Lai's MIPS final score for performance year 2024 is 71 out of 100, reported individually.
How many Medicare patients does Dr. Elson Lai see?
CMS counts 453 Medicare patients who saw Dr. Lai in 2024, with an average age of 75.
Is Dr. Elson Lai board certified?
Yes. Dr. Lai is board certified in ophthalmology by the American Board of Ophthalmology.
Show 6 more questionsShow fewer questions
What services does Dr. Elson Lai bill to Medicare?
In 2024, Dr. Lai's most billed Medicare services were eye exam or test (92014), office visit, established patient (99214) and eye exam or test (92250).
Where did Dr. Elson Lai go to medical school?
Dr. Lai graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2007.
What drugs does Dr. Elson Lai prescribe most?
In 2024 Medicare Part D data, Dr. Lai's most prescribed drugs by claims were Latanoprost, Prednisolone Acetate and Dorzolamide-Timolol.
Has Dr. Elson Lai received payments from drug or device companies?
CMS Open Payments shows $89,568 in general payments to Dr. Lai from 38 companies from 2016 to 2025. The largest total came from Valeant Pharmaceuticals International.
How long has Dr. Elson Lai been practicing?
Dr. Lai graduated from medical school in 2007, 19 years ago.
What insurance does Dr. Elson Lai accept?
Dr. Lai is in network with 18 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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