Doctor profile · Federal record
Dr. William Yang, MD
Ophthalmology Physician (CMS: Ophthalmology) · Ophthalmology Physician · Springfield, IL
- NPI 1790979011
- Accepts Medicare
- MIPS 77.7 / 100 · 2023
- 22 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2020 W Iles Ave
Springfield, IL 627047015
(217) 698-3030
fax (217) 698-4729 - Additional location
-
299 W Tietan St
Walla Walla, WA 993624363
(509) 525-2100
fax (509) 522-0313 - Mailing address
-
299 W Tietan St
Walla Walla, WA 993624363
Credentials & registration
- NPI registered
- August 2007 — 19 yrs on file
- Profile last updated
- February 22, 2026
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State licenses (2)
- Illinois #036126329 · Washington #70002214
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1790979011. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,055
Distinct HCPCS
8
Medicare allowed
$184,412
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92136 |
Measurement of corneal curvature and depth of eye | 268 | 125 | $32 | |
92014 |
Established patient complete exam of visual system | 207 | 203 | $120 | |
92012 |
Established patient problem focused exam of visual system | 203 | 153 | $86 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 163 | 102 | $515 | |
92004 |
New patient complete exam of visual system | 108 | 108 | $143 | |
66984 |
Removal of cataract with insertion of prosthetic lens | 43 | 27 | $505 | |
66821 |
Removal of recurring cataract in lens capsule using a laser | 39 | 36 | $312 | |
83861 |
Microfluid analysis of tears | 24 | 12 | $22 |
In context: peer comparison
Among 8 peers in this city , average services per provider: 155. This provider delivers 6.8× the peer median.Open Payments
Industry payments received
All-time total
$2,386
Transactions
16
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Vifor Pharma, Inc. | 2 | $2,141.02 | |
| Bausch & Lomb Americas Inc. | 9 | $138.80 | |
| Tarsus Pharmaceuticals, Inc. | 2 | $56.30 | |
| Rayner Intraocular Lenses Limited | 1 | $19.21 | |
| ABBVIE INC. | 1 | $16.25 | |
| SUN PHARMACEUTICAL INDUSTRIES INC. | 1 | $14.64 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,871
Patients
944
Total drug cost
$811,143
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisolone Acetate | Generic | 630 | 334 | $20,001 |
| Ofloxacin | Generic | 434 | 271 | $5,434 |
| Ketorolac Tromethamine | Generic | 427 | 268 | $8,116 |
| Cyclosporine | Generic | 58 | 29 | $68,822 |
| Xiidra (Lifitegrast) | Brand | 54 | 19 | $77,017 |
| Restasis (Cyclosporine) | Brand | 45 | 23 | $73,112 |
| Acyclovir | Generic | 41 | 0 | $471 |
| Lumigan (Bimatoprost) | Brand | 36 | 0 | $15,196 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 36 | 0 | $3,893 |
| Latanoprost | Generic | 27 | 0 | $423 |
Frequently asked questions
What is Dr. William Yang's medical specialty?
Dr. William Yang practices Ophthalmology Physician in Springfield, IL.
Where does Dr. William Yang practice?
Dr. William Yang practices at 2020 W Iles Ave, Springfield, IL 627047015. Office phone: 2176983030.
What is Dr. William Yang's NPI?
Dr. William Yang's National Provider Identifier (NPI) is 1790979011, issued by NPPES.
Does Dr. William Yang accept Medicare assignment?
Yes. Dr. William Yang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Yang commonly perform?
Top Medicare-reported procedures in 2023: Measurement of corneal curvature and depth of eye (HCPCS 92136); Established patient complete exam of visual system (HCPCS 92014); Established patient problem focused exam of visual system (HCPCS 92012). Source: CMS Medicare Physician & Other Practitioners file.