DR. SIAN E LIEM (OD) – Optometrist, NPI 1275522948
Optometrist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
219 OPTOMETRY in ME
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Provider Addresses for DR. SIAN E LIEM (OD)
Southeast Cesar Chavez Boulevard & Steele, Southeast César E. Chávez Boulevard, Woodstock, Portland, Metro, Multnomah County, Oregon, 97202, United States
PORTLAND, ME 041127487
Phone: (207) 885-8686
Fax: (207) 883-7154
Type: Mailing
7, Portland Farms Road, Cumberland County, Maine, 04074, United States
SCARBOROUGH, ME 040745301
Phone: (207) 883-2809
Fax: (207) 885-5607
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $71.
Total Amount is formed as General ($71) + Research ($0) + Ownership ($0) = $71.
Last reported payment date: 2024-04-29 • Largest payer in this snapshot: CooperVision Inc. ($42).
Total Amount
$71
General + Research + Ownership
Payments
2
Total payment records
General Amount
$71
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| CooperVision Inc. | $42 |
| Novartis Pharmaceuticals Corporation | $30 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2005-06-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20050624000361 | I | Optometry | ME | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 66984 | Removal of cataract with insertion of prosthetic lens | 1,535 | 18 | $0 |
| 92014 | Established patient complete exam of visual system | 300 | 299 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 54 | 44 | $0 |
| 92004 | New patient complete exam of visual system | 46 | 46 | $0 |
| 92250 | Photography of the retina | 40 | 40 | $0 |
Insurance plans in this area (ZIP 04112)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OPTOMETRY | ME | 92083 | Measurement of field of vision during daylight conditions | 12 | 12 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O P T O M E T R Y | ME | |
| O P T O M E T R Y | ME | |
| O P T O M E T R Y | ME | |
| - | ME | |
| O P T O M E T R Y | ME | |
| O P T O M E T R Y | ME | |
| O P T O M E T R Y | ME | |
| O P T O M E T R Y | ME | |
| O P T O M E T R Y | ME |
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