Doctor profile · Federal record
Dr. William Tsiaras, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · Providence, RI
- NPI 1376609180
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 51 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
78 Baker St
Providence, RI 029054417
(401) 831-4592
fax (401) 831-4643
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- July 18, 2016
- Year of graduation
- 1975 — 51 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- Rhode Island #4952
- Medicaid
- RI #9000834
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1376609180. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,305
Distinct HCPCS
6
Medicare allowed
$127,464
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92014 |
Established patient complete exam of visual system | 795 | 555 | $129 | |
92134 |
Imaging of retina | 333 | 238 | $41 | |
92133 |
Imaging of optic nerve | 104 | 98 | $38 | |
92012 |
Established patient problem focused exam of visual system | 39 | 33 | $92 | |
92004 |
New patient complete exam of visual system | 17 | 17 | $153 | |
92083 |
Exam of visual field with extended testing | 17 | 17 | $64 |
In context: peer comparison
Among 14 peers in Providence Ophthalmology Physician, average services per provider: 342. This provider delivers 3.8× the peer median.Open Payments
Industry payments received
All-time total
$139
Transactions
6
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 3 | $59.55 | |
| Alcon Vision LLC | 2 | $45.95 | |
| Oyster Point Pharma, INC. | 1 | $33.55 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
737
Patients
203
Total drug cost
$73,882
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 285 | 77 | $7,874 |
| Timolol Maleate | Generic | 133 | 40 | $4,246 |
| Lumigan (Bimatoprost) | Brand | 89 | 20 | $34,564 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 48 | 11 | $1,422 |
| Brimonidine Tartrate | Generic | 44 | 11 | $372 |
| Prednisolone Acetate | Generic | 36 | 23 | $1,287 |
| Neomycin-Polymyxin-Dexameth (Neomycin/Polymyxin B/Dexametha) | Brand | 26 | 21 | $305 |
| Alphagan P (Brimonidine Tartrate) | Brand | 24 | 0 | $13,052 |
| Rocklatan (Netarsudil Mesylat/Latanoprost) | Brand | 19 | 0 | $6,761 |
| Travoprost | Generic | 19 | 0 | $3,313 |
Frequently asked questions
What is Dr. William Tsiaras's medical specialty?
Dr. William Tsiaras practices Ophthalmology Physician in Providence, RI.
Where does Dr. William Tsiaras practice?
Dr. William Tsiaras practices at 78 Baker St, Providence, RI 029054417. Office phone: 4018314592.
What is Dr. William Tsiaras's NPI?
Dr. William Tsiaras's National Provider Identifier (NPI) is 1376609180, issued by NPPES.
Does Dr. William Tsiaras accept Medicare assignment?
Yes. Dr. William Tsiaras accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Tsiaras commonly perform?
Top Medicare-reported procedures in 2023: Established patient complete exam of visual system (HCPCS 92014); Imaging of retina (HCPCS 92134); Imaging of optic nerve (HCPCS 92133). Source: CMS Medicare Physician & Other Practitioners file.