Doctor profile · Federal record
Dr. Sian Liem, OD
Optometrist (CMS: Optometry) · Scarborough, ME
- NPI 1275522948
- Accepts Medicare
- 30 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
7 Portland Farms RD
Scarborough, ME 040745301
(207) 883-2809
fax (207) 885-5607 - Mailing address
-
Po Box 7487
Portland, ME 041127487
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- January 6, 2012
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 152W00000X — NUCC code
- State license (1)
- Maine #OPT811
- Medicaid
- ME #237970099
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275522948. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,078
Distinct HCPCS
9
Medicare allowed
$58,676
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
66984 |
Removal of cataract with insertion of prosthetic lens | 1,535 | 18 | $1 | |
92014 |
Established patient complete exam of visual system | 300 | 299 | $125 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 54 | 44 | $89 | |
92004 |
New patient complete exam of visual system | 46 | 46 | $148 | |
92250 |
Photography of the retina | 40 | 40 | $37 | |
92083 |
Exam of visual field with extended testing | 35 | 33 | $62 | |
92133 |
Imaging of optic nerve | 35 | 35 | $34 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 16 | $125 | |
92134 |
Imaging of retina | 16 | 16 | $40 |
In context: peer comparison
Among 2 peers in Scarborough Optometrist, average services per provider: 224. This provider delivers 9.3× the peer median.Open Payments
Industry payments received
All-time total
$42
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| CooperVision INC. | 1 | $41.54 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
220
Patients
62
Total drug cost
$23,654
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 57 | 22 | $2,355 |
| Timolol Maleate | Generic | 39 | 13 | $981 |
| Lumigan (Bimatoprost) | Brand | 26 | 0 | $15,738 |
| Dorzolamide Hcl | Generic | 23 | 0 | $1,061 |
| Tobramycin-Dexamethasone (Tobramycin/Dexamethasone) | Brand | 18 | 12 | $958 |
| Azithromycin | Generic | 16 | 15 | $127 |
| Brimonidine Tartrate | Generic | 15 | 0 | $199 |
| Loteprednol Etabonate | Generic | 14 | 0 | $1,955 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 12 | 0 | $281 |
Frequently asked questions
What is Dr. Sian Liem's medical specialty?
Dr. Sian Liem practices Optometrist in Scarborough, ME.
Where does Dr. Sian Liem practice?
Dr. Sian Liem practices at 7 Portland Farms RD, Scarborough, ME 040745301. Office phone: 2078832809.
What is Dr. Sian Liem's NPI?
Dr. Sian Liem's National Provider Identifier (NPI) is 1275522948, issued by NPPES.
Does Dr. Sian Liem accept Medicare assignment?
Yes. Dr. Sian Liem accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sian Liem commonly perform?
Top Medicare-reported procedures in 2023: Removal of cataract with insertion of prosthetic lens (HCPCS 66984); Established patient complete exam of visual system (HCPCS 92014); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.