Dr. William Weng Ping Ko, MD
- Medicare services, 2024
- 4,628
- Medicare patients, 2024
- 902
- Part D claims, 2024
- 5,863
- Industry payments
- $1,345
- Affiliated sites
- 1
- Practice address
- 117 S Mission Dr, San Gabriel, CA 91776
- Practice phone
- Call (626) 284-2168
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
William Weng-Ping Ko, M.D. a Professional Corp
San Gabriel, California
Find Dr. Ko'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. William Weng Ping Ko is an ophthalmologist in San Gabriel, California
Dr. Ko practices at William Weng-Ping Ko, M.D. a Professional Corp in San Gabriel, California.
Dr. Ko's NPI, 1548268873, was assigned on July 11, 2005. Dr. Ko graduated from Boston University School Of Medicine in 1988. Dr. Ko's California license number on file is G73648.
- NPI
- 1548268873NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981639614
- NPI enumeration date
- July 11, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 284-2168
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Weng Ping Ko practices at William Weng-Ping Ko, M.D. a Professional Corp in San Gabriel, California
Dr. Ko's primary practice is William Weng-Ping Ko, M.D. a Professional Corp, at 117 S Mission Dr, San Gabriel, CA 91776 in Los Angeles County. The practice phone is (626) 284-2168.
- William Weng-Ping Ko, M.D. a Professional Corp117 S Mission Dr, San Gabriel, CA 91776 · Los Angeles CountyPhone(626) 284-2168
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Weng Ping Ko is affiliated with 2 sites of care and 1 medical group
Dr. Ko's primary practice is William Weng-Ping Ko, M.D. a Professional Corp in San Gabriel, California. Dmand AI also links Dr. Ko 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. William Weng Ping Ko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ko practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| William Weng-Ping Ko, M.D. a Professional Corp | 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
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Weng Ping Ko is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Ko's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Ko is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Ko has a license on file in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
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. Ko treats.
Ophthalmologists near Dr. Ko
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. William Weng Ping Ko billed Medicare for 4,628 services in 2024
CMS data shows 4,628 Medicare services from Dr. Ko across 14 procedure codes in 2024, for 902 Medicare patients. Medicare paid $295,677 for them.
Dr. Ko's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 3,5842024: 4,46024%
- Office and hospital visits
- 2023: 492024: 7757%
- Imaging
- 2023: 522024: 52No change
- Surgery
- 2023: 412024: 395%
Where Dr. Ko's Medicare services took place, 2024
- In an office4,60299%
- In a facility261%
Dr. Ko compared with the California median for ophthalmologists, 2024
- Dr. Ko
- California median
- Medicare services
- 4,628vs 1,0794.3 times
- Medicare patients
- 902vs 4212.1 times
- Part D claims
- 5,738vs 6189.3 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Ko'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. Ko?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ko and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Weng Ping Ko treated 902 Medicare patients in 2024, average age 77
CMS counts 902 Medicare patients who saw Dr. Ko in 2024. The largest group is 75 to 84, with 364 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 50% are also on Medicaid. Their average risk score is 1.26, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ko's median patient age at 73, with 62% women.
Dr. Ko's Medicare patients by age, 2024
Dr. Ko's Medicare patients by sex, 2024
- Women59366%
- Men30934%
Chronic conditions among Dr. Ko's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes54%
- Arthritis45%
- Chronic kidney disease41%
- Osteoporosis38%
- Ischemic heart disease29%
- COPD18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ko's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Weng Ping Ko wrote 5,863 Medicare Part D claims in 2024
In 2024, Dr. Ko wrote 5,863 Medicare Part D claims for 1,032 patients. 61% of them were for generic drugs. CMS names the drug for 5,738 of them, across 27 drugs with 11 or more claims each, at $922,504 in total drug cost. In 2023, CMS named 5,783 claims across 27 drugs.
Dr. Ko's Part D claims by kind of drug, 2024
- Generic3,588 claims61%
- Brand-name2,275 claims39%
Dr. Ko'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. Ko's Part D claims, 2024
- Antibiotics0%13 of 5,863 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: 5,7832024: 5,7381%
Drugs named by CMS: 27 in 2024, 27 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. William Weng Ping Ko ranks in the 50th percentile for cataract surgery in Medicare
Dr. Ko accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 26 procedures of cataract surgery by Dr. Ko, more than 50% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Ko ranks in Medicare procedure volume
- Cataract surgery
- 50th percentile26 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. William Weng Ping Ko received $1,345 in industry payments from 2016 to 2025
CMS Open Payments shows 28 general payments to Dr. Ko from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 86% of the total. Alcon Laboratories Inc paid the most, $327.
General payments to Dr. Ko by program year, 2016 to 2025
General payments to Dr. Ko by kind, 2016 to 2025
- Food and beverage$1,16386%
- Speaker and faculty fees$15011%
- Gifts$191%
- Education$131%
Companies that paid Dr. Ko 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. William Weng Ping Ko graduated from Boston University School Of Medicine
Dr. Ko graduated from Boston University School Of Medicine in 1988.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. William Weng Ping Ko accepts plans from 20 insurance carriers
Dr. Ko is in network with 20 carriers, including Aetna, HCSC and United Healthcare. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.
- Aetna
- HCSC
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Humana
- LA Care
- Alliant Health Plans
- +12 more carriersWith a free account
Plan types Dr. Ko accepts, by number of carriers
- HMO13
- PPO11
- Medicare9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. William Weng Ping Ko'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)Doctors and Clinicians Utilization Data (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 |
| 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. William Weng Ping Ko
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. William Weng Ping Ko's NPI number?
Dr. William Weng Ping Ko's NPI number is 1548268873. It was assigned on July 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William Weng Ping Ko?
Dr. William Weng Ping Ko is an ophthalmologist in San Gabriel, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. William Weng Ping Ko practice?
Dr. Ko practices at 117 S Mission Dr, San Gabriel, CA 91776. Dr. Ko's primary practice is William Weng-Ping Ko, M.D. a Professional Corp in San Gabriel, California. Dmand AI also links Dr. Ko to 1 group practice or clinic and 1 medical group.
What is Dr. William Weng Ping Ko's office phone number?
The practice phone on file for Dr. Ko is (626) 284-2168.
What is Dr. William Weng Ping Ko's medical license number?
Dr. Ko's California license number on file is G73648.
Does Dr. William Weng Ping Ko accept Medicare?
Yes. CMS data shows Dr. Ko billed Medicare for 4,628 services in 2024, and Dr. Ko accepts Medicare assignment.
How many Medicare patients does Dr. William Weng Ping Ko see?
CMS counts 902 Medicare patients who saw Dr. Ko in 2024, with an average age of 77.
Is Dr. William Weng Ping Ko board certified?
Yes. Dr. Ko is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. William Weng Ping Ko bill to Medicare?
In 2024, Dr. Ko's most billed Medicare services were eye exam or test (92012), eye exam or test (92014) and eye exam or test (92133).
Where did Dr. William Weng Ping Ko go to medical school?
Dr. Ko graduated from Boston University School Of Medicine in 1988.
Show 4 more questionsShow fewer questions
What drugs does Dr. William Weng Ping Ko prescribe most?
In 2024 Medicare Part D data, Dr. Ko's most prescribed drugs by claims were Latanoprost, Azelastine HCl and Timolol Maleate.
Has Dr. William Weng Ping Ko received payments from drug or device companies?
CMS Open Payments shows $1,345 in general payments to Dr. Ko from 15 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. William Weng Ping Ko been practicing?
Dr. Ko graduated from medical school in 1988, 38 years ago.
What insurance does Dr. William Weng Ping Ko accept?
Dr. Ko is in network with 20 carriers, including Aetna, HCSC and United Healthcare. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.
Selling to ophthalmology practices?
See ophthalmologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card