DR. KATHERINE CHIA-HSIN YANG-WILLIAMS (O.D) – Optometrist, NPI 1699774844
Optometrist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,098 OPTOMETRY in WA
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Provider Addresses for DR. KATHERINE CHIA-HSIN YANG-WILLIAMS (O.D)
Delta Dental Building, 9706, 4th Avenue Northeast, Maple Leaf, Seattle, King County, Washington, 98115, United States
STE 100
SEATTLE, WA 981152199
Phone: (206) 527-2987
Fax: (206) 527-1208
Type: Mailing
7001, Roosevelt Way Northeast, Green Lake, Seattle, King County, Washington, 98115, United States
SEATTLE, WA 98115
Phone: (206) 527-2987
Fax: (206) 526-8076
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 23 Open Payments records for all available years, with a total value of $758.
Total Amount is formed as General ($758) + Research ($0) + Ownership ($0) = $758.
Last reported payment date: 2024-11-26 • Largest payer in this snapshot: Thea Pharma Inc. ($229).
Total Amount
$758
General + Research + Ownership
Payments
23
Total payment records
General Amount
$758
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Thea Pharma Inc. | $229 |
| SUN PHARMACEUTICAL INDUSTRIES INC. | $156 |
| CooperVision Inc. | $120 |
| Bausch & Lomb Americas Inc. | $119 |
| Sun Pharmaceutical Industries Inc. | $27 |
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: 2007-09-12
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 |
|---|---|---|---|---|
| I20070912000016 | I | Optometry | WA | 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 |
|---|---|---|---|---|
| 92014 | Established patient complete exam of visual system | 221 | 197 | $0 |
| 92250 | Photography of the retina | 175 | 172 | $0 |
| 92083 | Exam of visual field with extended testing | 103 | 83 | $0 |
| 92133 | Imaging of optic nerve | 87 | 76 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 71 | 58 | $0 |
Insurance plans in this area (ZIP 98115)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O P T O M E T R Y | WA | |
| O P T O M E T R Y | WA | |
| O P T O M E T R Y | WA | |
| O P T O M E T R Y | OR | |
| - | WA | |
| O P T O M E T R Y | WA |
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