Doctor profile · Federal record
Dr. Yen Hsia, MD
Ophthalmology Physician (CMS: Ophthalmology) · Walnut Creek, CA
- NPI 1326468661
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 13 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
350 N Wiget Ln Ste 200
Walnut Creek, CA 945982448
(925) 934-7800
Credentials & registration
- NPI registered
- April 2014 — 12 yrs on file
- Profile last updated
- January 14, 2026
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- California #A133168
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326468661. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,183
Distinct HCPCS
10
Medicare allowed
$433,984
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92012 |
Established patient problem focused exam of visual system | 1,079 | 517 | $113 | |
92083 |
Exam of visual field with extended testing | 419 | 338 | $81 | |
92014 |
Established patient complete exam of visual system | 399 | 377 | $158 | |
92133 |
Imaging of optic nerve | 364 | 297 | $44 | |
92136 |
Measurement of corneal curvature and depth of eye | 140 | 96 | $50 | |
92020 |
Exam of the internal drainage system of eye | 132 | 130 | $34 | |
92134 |
Imaging of retina | 120 | 109 | $50 | |
76514 |
Ultrasound scan of cornea to determine thickness | 101 | 100 | $13 | |
92004 |
New patient complete exam of visual system | 97 | 97 | $186 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 94 | 67 | $609 |
In context: peer comparison
Among 6 peers in Walnut Creek Ophthalmology Physician, average services per provider: 168. This provider delivers 19× the peer median.Open Payments
Industry payments received
All-time total
$1,350
Transactions
26
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| New World Medical,INC. | 3 | $656.58 | |
| Alcon Vision LLC | 9 | $372.03 | |
| Sight Sciences, INC. | 5 | $97.40 | |
| Oyster Point Pharma, INC. | 2 | $63.38 | |
| Abbvie INC. | 2 | $60.50 | |
| Thea Pharma INC. | 2 | $42.02 | |
| Sun Pharmaceutical Industries INC. | 1 | $20.91 | |
| Bausch & Lomb Americas INC. | 1 | $19.00 | |
| Tarsus Pharmaceuticals, INC. | 1 | $18.61 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,858
Patients
869
Total drug cost
$139,391
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 392 | 151 | $8,488 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 294 | 89 | $9,128 |
| Prednisolone Acetate | Generic | 206 | 149 | $14,772 |
| Timolol Maleate | Generic | 205 | 85 | $2,915 |
| Ketorolac Tromethamine | Generic | 147 | 107 | $2,794 |
| Brimonidine Tartrate | Generic | 131 | 51 | $3,339 |
| Moxifloxacin (Moxifloxacin Hcl) | Brand | 112 | 77 | $2,833 |
| Lumigan (Bimatoprost) | Brand | 80 | 26 | $44,600 |
| Dorzolamide Hcl | Generic | 65 | 25 | $1,541 |
| Ofloxacin | Generic | 58 | 51 | $881 |
Frequently asked questions
What is Dr. Yen Hsia's medical specialty?
Dr. Yen Hsia practices Ophthalmology Physician in Walnut Creek, CA.
Where does Dr. Yen Hsia practice?
Dr. Yen Hsia practices at 350 N Wiget Ln Ste 200, Walnut Creek, CA 945982448. Office phone: 9259347800.
What is Dr. Yen Hsia's NPI?
Dr. Yen Hsia's National Provider Identifier (NPI) is 1326468661, issued by NPPES.
Does Dr. Yen Hsia accept Medicare assignment?
Yes. Dr. Yen Hsia accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Yen Hsia commonly perform?
Top Medicare-reported procedures in 2023: Established patient problem focused exam of visual system (HCPCS 92012); Exam of visual field with extended testing (HCPCS 92083); Established patient complete exam of visual system (HCPCS 92014). Source: CMS Medicare Physician & Other Practitioners file.