Dr. Grant E. Lee, MD
- Medicare services, 2024
- 3,553
- Medicare patients, 2026
- 895
- Part D claims, 2026
- 12,732
- Publications
- 1
- MIPS score, 2026
- 100
- Practice address
- 18893-A Colima Road, Rowland Heights, CA 91748-2995
- Practice phone
- Call (626) 810-1001
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cornerstone Eye Center
Physician office · Rowland Heights, California
Find Dr. Lee'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. Grant E. Lee is an ophthalmologist in Rowland Heights, California
Dr. Lee practices at Cornerstone Eye Center in Rowland Heights, California.
Dr. Lee's NPI, 1700109501, was assigned on March 8, 2010. Dr. Lee graduated from David Geffen School of Medicine at UCLA in 2008. Dr. Lee's California license number on file is NOT RECEIVED YET.
- NPI
- 1700109501NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810150174
- NPI enumeration date
- March 8, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 810-1001
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Grant E. Lee practices at Cornerstone Eye Center in Rowland Heights, California
Dr. Lee's primary practice is Cornerstone Eye Center, at 18893-A Colima Road, Rowland Heights, CA 91748-2995. The practice phone is (626) 810-1001.
- Cornerstone Eye Center18893-A Colima Road, Rowland Heights, CA 91748-2995Phone(626) 810-1001
Source: Dmand AI Affiliation Data
Dr. Grant E. Lee is affiliated with 1 site of care
Dr. Lee's primary practice is Cornerstone Eye Center in Rowland Heights, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Grant E. Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cornerstone Eye Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Grant E. Lee is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Lee is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Lee has a license on file in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Clinical focus
Dmand AI lists cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eyelid inflammation, glaucoma, glaucoma surgery and hereditary corneal conditions among the conditions Dr. Lee treats.
Ophthalmologists near Dr. Lee
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. Grant E. Lee billed Medicare for 3,553 services in 2024
CMS data shows 3,553 Medicare services from Dr. Lee across 11 procedure codes in 2024, for 895 Medicare patients. Medicare paid $269,133 for them.
Dr. Lee's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 3,5322024: 3,4772%
- Surgery
- 2023: 1372024: 7645%
Where Dr. Lee's Medicare services took place, 2024
- In an office3,51199%
- In a facility421%
Dr. Lee compared with the California median for ophthalmologists, 2024
- Dr. Lee
- California median
- Medicare services
- 3,553vs 1,0793.3 times
- Medicare patients
- 895vs 4212.1 times
- Part D claims
- 12,633vs 61820.4 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Lee'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.
Need commercial claims for Dr. Lee?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lee and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Grant E. Lee treated 895 Medicare patients in 2026, average age 77
CMS counts 895 Medicare patients who saw Dr. Lee in 2026. The largest group is 75 to 84, with 364 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 58% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lee's median patient age at 70, with 57% women.
Dr. Lee's Medicare patients by age, 2026
Dr. Lee's Medicare patients by sex, 2026
- Women54261%
- Men35339%
Chronic conditions among Dr. Lee's Medicare patients, 2026
- High blood pressure75%
- High cholesterol75%
- Diabetes51%
- Arthritis42%
- Chronic kidney disease36%
- Osteoporosis30%
- Ischemic heart disease20%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lee'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
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. Grant E. Lee wrote 12,732 Medicare Part D claims in 2026
In 2026, Dr. Lee wrote 12,732 Medicare Part D claims for 2,219 patients. CMS names the drug for 12,633 of them, across 46 drugs with 11 or more claims each, at $3,128,405 in total drug cost. In 2023, CMS named 11,388 claims across 48 drugs.
Dr. Lee'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.
Drug classes CMS tracks in Dr. Lee's Part D claims, 2026
- Antibiotics0%48 of 12,732 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 11,3882024: 12,63311%
Drugs named by CMS: 46 in 2024, 48 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), 2026 data
Dr. Grant E. Lee scored 100 out of 100 in Medicare's MIPS program for 2026
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Lee for performance year 2026, reported individually. Dr. Lee accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 72 procedures of cataract surgery by Dr. Lee, more than 69% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Lee's MIPS scores, performance year 2026
- 100of 100Final score
- 98.9of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Lee ranks in Medicare procedure volume
- Cataract surgery
- 69th percentile72 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), 2026 data; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Grant E. Lee has 1 publication on record
Dmand AI links 1 paper to Dr. Lee.
Recent publications by Dr. Lee
See who Dr. Lee researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lee works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Grant E. Lee received $9,769 in industry payments from 2016 to 2025
CMS Open Payments shows 550 general payments to Dr. Lee from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Alcon Laboratories Inc paid the most, $2,127.
General payments to Dr. Lee by program year, 2016 to 2025
General payments to Dr. Lee by kind, 2016 to 2025
- Food and beverage$9,33696%
- Travel and lodging$2653%
- Education$1311%
- Gifts$190%
- Entertainment$180%
Companies that paid Dr. Lee 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. Grant E. Lee has 1 award and honors on record
Dmand AI lists 1 award for Dr. Lee, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Lee
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Grant E. Lee graduated from David Geffen School of Medicine at UCLA
Dr. Lee graduated from David Geffen School of Medicine at UCLA in 2008.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Grant E. Lee accepts plans from 16 insurance carriers
Dr. Lee is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Humana
- LA Care
- Blue Cross Blue Shield of Massachusetts
- +8 more carriersWith a free account
Plan types Dr. Lee accepts, by number of carriers
- Medicare11
- PPO10
- HMO9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Grant E. Lee'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Grant E. Lee
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. Grant E. Lee's NPI number?
Dr. Grant E. Lee's NPI number is 1700109501. It was assigned on March 8, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Grant E. Lee?
Dr. Grant E. Lee is an ophthalmologist in Rowland Heights, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Grant E. Lee practice?
Dr. Lee practices at 18893-A Colima Road, Rowland Heights, CA 91748-2995. Dr. Lee's primary practice is Cornerstone Eye Center in Rowland Heights, California.
What is Dr. Grant E. Lee's office phone number?
The practice phone on file for Dr. Lee is (626) 810-1001. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Grant E. Lee's email address?
Dmand AI checks professional and personal email addresses for Dr. Lee through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Grant E. Lee's medical license number?
Dr. Lee's California license number on file is NOT RECEIVED YET.
Does Dr. Grant E. Lee accept Medicare?
Yes. CMS data shows Dr. Lee billed Medicare for 3,553 services in 2024, and Dr. Lee accepts Medicare assignment.
What is Dr. Grant E. Lee's MIPS score?
Dr. Lee's MIPS final score for performance year 2026 is 100 out of 100, reported individually.
How many Medicare patients does Dr. Grant E. Lee see?
CMS counts 895 Medicare patients who saw Dr. Lee in 2026, with an average age of 77.
Is Dr. Grant E. Lee board certified?
Yes. Dr. Lee is board certified in ophthalmology by the American Board of Ophthalmology.
Show 8 more questionsShow fewer questions
What services does Dr. Grant E. Lee bill to Medicare?
In 2024, Dr. Lee's most billed Medicare services were eye exam or test (92012), eye exam or test (92250) and eye exam or test (92014).
Where did Dr. Grant E. Lee go to medical school?
Dr. Lee graduated from David Geffen School of Medicine at UCLA in 2008.
What drugs does Dr. Grant E. Lee prescribe most?
In 2024 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Latanoprost, Restasis and Cyclosporine.
Has Dr. Grant E. Lee received payments from drug or device companies?
CMS Open Payments shows $9,769 in general payments to Dr. Lee from 29 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Grant E. Lee been practicing?
Dr. Lee graduated from medical school in 2008, 18 years ago.
Does Dr. Grant E. Lee do research?
Dmand AI links 1 publication to Dr. Lee.
What EHR does Dr. Grant E. Lee's practice use?
Dmand AI tracks the EHR system at Cornerstone Eye Center. The vendor and product are available with a free Dmand AI account.
What insurance does Dr. Grant E. Lee accept?
Dr. Lee is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit. The full carrier list is available with a free Dmand AI account.
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