CASSANDRA LYNN WILLIAMSON (PA) – Physician Assistant, NPI 1457565392
Physician Assistant
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
5,032 PHYSICIAN ASSISTANT in OH
Provider Addresses for CASSANDRA LYNN WILLIAMSON (PA)
4340 CLYO RD STE 200
DAYTON, OH 454597000
Phone: (937) 396-2602
Fax: (937) 395-3682
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 160 Open Payments records for all available years, with a total value of $2,691.
Total Amount is formed as General ($2,691) + Research ($0) + Ownership ($0) = $2,691.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: ABBVIE INC. ($827).
Total Amount
$2,691
General + Research + Ownership
Payments
160
Total payment records
General Amount
$2,691
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2017-11-15
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 |
|---|---|---|---|---|
| I20171115003362 | I | Physician Assistant | OH | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 208 | 132 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 70 | 68 | $0 |
| 91200 | Measurement of liver stiffness | 61 | 61 | $0 |
Insurance plans in this area (ZIP 45459)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | IL | |
| G A S T R O E N T E R O L O G Y | OH | |
| - | OH | |
| P A T H O L O G Y | OH | |
| - | OH | |
| - | OH | |
| G A S T R O E N T E R O L O G Y | OH | |
| G A S T R O E N T E R O L O G Y | OH | |
| Physician Assistant | OH | |
| P A T H O L O G Y | OH |
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