Brent Leong Lum, M.D.
Ophthalmology Physician · Modesto, CA
Brent Leong Lum, M.D. is an ophthalmology physician with a practice address in Modesto, California, and NPI 1891954772, issued on Jun 5, 2008. Check the license (California A116550, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brent Leong Lum
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- A116550 CA
BP1-0032047 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4601 Dale RD, Modesto, CA 95356
- Phone
- (209) 476-3484
- Enumerated
- Jun 5, 2008
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (209) 476-3012
- Medicare enrollment
- Enrolled (PECOS I20110902000111); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 4601 Dale RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angela Abe, OPTOptometrist1336108885
- Seth Ackuayi, MDHospitalist Physician1154409985
- Laith Al-Najjar, D.O.Emergency Medicine Physician1932801768
- Zaid Alazawi, DOStudent in an Organized Health Care Education/Training Program1295583102
- Brandi AlbrittonCertified Respiratory Therapist1326503541
- Hilda Alcala, MDAnesthesiology Physician1467644427
Verify Brent Leong Lum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A116550Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average ophthalmology physician in 2024
2,058 Medicare Part D claims for 695 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Latanoprost729 claims
- Prednisolone Acetate274 claims
- Moxifloxacin230 claims
- Dorzolamide-Timolol190 claims
- Timolol Maleate154 claims
- Cyclosporine131 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brent Leong Lum among 2,899 ophthalmology physician records in California
Brent Leong Lum, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 67% of them.
- NPI issued2008 · 67% of these records are older, 28% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2007 · median 2001 among the 1,907 with a school on file
- Record last updated2021 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Modesto → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Rangram Chandran, MDModesto, CA 953561194714642
- Hany Michail, MDModesto, CA 953561275673709
- James Gammon, MDModesto, CA 953551598800062
- Brian Lenser, MDModesto, CA 953551275504524
- Charles McBride, MDModesto, CA 953551114940301
- Kevin Craig, MDModesto, CA 953501912089061
- Keith Davis, MDModesto, CA 953501639268089
- Brian Fechter, MDModesto, CA 953501225181399
Common questions
What is Brent Leong Lum, M.D.'s NPI number?
Brent Leong Lum, M.D.'s National Provider Identifier (NPI) is 1891954772, issued on Jun 5, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Brent Leong Lum, M.D. located?
The NPPES record lists a practice address at 4601 Dale RD, Modesto, CA, 95356. Phone: (209) 476-3484. Providers update this record themselves, so call before visiting.
How can I verify Brent Leong Lum, M.D.'s license?
NPPES lists California license number A116550, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brent Leong Lum, M.D. prescribe under Medicare Part D?
In 2024, Brent Leong Lum, M.D. had 2,058 Medicare Part D claims for 695 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.