Doctor profile · Federal record
Dr. William Ko, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · San Gabriel, CA
- NPI 1548268873
- Accepts Medicare
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
117 S Mission Dr
San Gabriel, CA 917761101
(626) 284-2168
fax (626) 284-7980
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- February 22, 2008
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- California #G73648
- Medicaid
- CA #00G736480
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548268873. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,726
Distinct HCPCS
10
Medicare allowed
$320,870
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92012 |
Established patient problem focused exam of visual system | 1,074 | 653 | $101 | |
92014 |
Established patient complete exam of visual system | 610 | 570 | $141 | |
92020 |
Exam of the internal drainage system of eye | 426 | 421 | $31 | |
92133 |
Imaging of optic nerve | 416 | 415 | $39 | |
92083 |
Exam of visual field with extended testing | 375 | 375 | $71 | |
92250 |
Photography of the retina | 358 | 357 | $40 | |
92134 |
Imaging of retina | 198 | 192 | $45 | |
92004 |
New patient complete exam of visual system | 82 | 82 | $167 | |
76514 |
Ultrasound scan of cornea to determine thickness | 52 | 52 | $12 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 49 | 40 | $62 |
In context: peer comparison
Among 4 peers in San Gabriel Ophthalmology Physician, average services per provider: 190. This provider delivers 20× the peer median.Open Payments
Industry payments received
All-time total
$17
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Sun Pharmaceutical Industries INC. | 1 | $16.60 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,367
Patients
1,476
Total drug cost
$885,703
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 1,920 | 396 | $36,571 |
| Azelastine Hcl | Generic | 755 | 278 | $25,070 |
| Lumigan (Bimatoprost) | Brand | 404 | 78 | $170,885 |
| Restasis (Cyclosporine) | Brand | 402 | 85 | $356,784 |
| Timolol Maleate | Generic | 398 | 102 | $10,725 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 369 | 88 | $16,143 |
| Cyclosporine | Generic | 172 | 63 | $103,673 |
| Dorzolamide Hcl | Generic | 169 | 39 | $6,777 |
| Brimonidine Tartrate | Generic | 161 | 47 | $29,921 |
| Moxifloxacin (Moxifloxacin Hcl) | Brand | 126 | 81 | $4,085 |
Frequently asked questions
What is Dr. William Ko's medical specialty?
Dr. William Ko practices Ophthalmology Physician in San Gabriel, CA.
Where does Dr. William Ko practice?
Dr. William Ko practices at 117 S Mission Dr, San Gabriel, CA 917761101. Office phone: 6262842168.
What is Dr. William Ko's NPI?
Dr. William Ko's National Provider Identifier (NPI) is 1548268873, issued by NPPES.
Does Dr. William Ko accept Medicare assignment?
Yes. Dr. William Ko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Ko commonly perform?
Top Medicare-reported procedures in 2023: Established patient problem focused exam of visual system (HCPCS 92012); Established patient complete exam of visual system (HCPCS 92014); Exam of the internal drainage system of eye (HCPCS 92020). Source: CMS Medicare Physician & Other Practitioners file.