Doctor profile · Federal record
Dr. William to, OD
Optometrist (CMS: Optometry) · San Mateo, CA
- NPI 1952756678
- Accepts Medicare
- 10 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
194 Hillsdale Shopping Center
San Mateo, CA 944033409
(650) 341-8080
fax (650) 341-8565 - Additional location
-
377 Santana Row Ste 1115
San Jose, CA 951282058
(408) 502-5020
fax (408) 389-8261 - Additional location
-
6000 Bollinger Canyon RD Ste 1104
San Ramon, CA 945832305
(925) 725-1745
fax (925) 725-7922 - Additional location
-
9309 Glacier Hwy Ste A103
Juneau, AK 998019300
(907) 789-3175
fax (844) 903-4362 - Mailing address
-
1750 Lundy Ave Unit 612899
San Jose, CA 951617117
Show 1 more location
Credentials & registration
- NPI registered
- May 2016 — 10 yrs on file
- Profile last updated
- September 3, 2025
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 152W00000X — NUCC code
- State license (1)
- California #34153TLG
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1952756678. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
734
Distinct HCPCS
10
Medicare allowed
$72,239
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92250 |
Photography of the retina | 210 | 197 | $45 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 161 | 131 | $161 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 104 | 86 | $112 | |
92133 |
Imaging of optic nerve | 55 | 50 | $42 | |
92083 |
Exam of visual field with extended testing | 51 | 50 | $73 | |
92014 |
Established patient complete exam of visual system | 43 | 43 | $156 | |
92134 |
Imaging of retina | 39 | 35 | $48 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 29 | 19 | $133 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 16 | 16 | $213 | |
66821 |
Removal of recurring cataract in lens capsule using a laser | 15 | 15 | $88 |
In context: peer comparison
Among 9 peers in San Mateo Optometrist, average services per provider: 52. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$2,010
Transactions
19
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Alcon Vision LLC | 11 | $1,539.94 | |
| Johnson & Johnson Vision Care, INC. | 4 | $228.50 | |
| Bausch & Lomb Americas INC. | 2 | $159.79 | |
| Optos, INC. | 1 | $50.15 | |
| Abb Con-Cise Optical Group LLC | 1 | $32.11 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
347
Patients
85
Total drug cost
$66,994
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 70 | 20 | $1,530 |
| Lumigan (Bimatoprost) | Brand | 53 | 11 | $22,059 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 46 | 0 | $1,270 |
| Neomycin-Polymyxin-Dexameth (Neomycin/Polymyxin B/Dexametha) | Brand | 28 | 26 | $447 |
| Brimonidine Tartrate-Timolol (Brimonidine Tartrate/Timolol) | Brand | 23 | 0 | $4,113 |
| Vyzulta (Latanoprostene Bunod) | Brand | 22 | 0 | $8,678 |
| Fluorometholone | Generic | 20 | 16 | $1,353 |
| Prednisolone Acetate | Generic | 20 | 12 | $795 |
| Timolol Maleate | Generic | 19 | 0 | $161 |
| Xiidra (Lifitegrast) | Brand | 18 | 0 | $19,017 |
Frequently asked questions
What is Dr. William to's medical specialty?
Dr. William to practices Optometrist in San Mateo, CA.
Where does Dr. William to practice?
Dr. William to practices at 194 Hillsdale Shopping Center, San Mateo, CA 944033409. Office phone: 6503418080.
What is Dr. William to's NPI?
Dr. William to's National Provider Identifier (NPI) is 1952756678, issued by NPPES.
Does Dr. William to accept Medicare assignment?
Yes. Dr. William to accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William to commonly perform?
Top Medicare-reported procedures in 2023: Photography of the retina (HCPCS 92250); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.