STACEY ANN WILLIAMSON (PA-C) – Physician Assistant, NPI 1457667891
Physician Assistant
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
2,876 PHYSICIAN ASSISTANT in OR
Provider Addresses for STACEY ANN WILLIAMSON (PA-C)
PO BOX 3158
PORTLAND, OR 972083158
Phone:
Type: Mailing
12442 SW SCHOLLS FERRY RD STE 100
TIGARD, OR 972230803
Phone: (503) 216-9200
Type: Location
2122 Troy Rd Ste 130
Edwardsville, IL 620252540
Phone: (618) 692-9876
Type: Location
11155 Dunn Rd Ste 109N
Saint Louis, MO 631366148
Phone: (314) 953-8799
Type: Location
9155 SW Barnes Rd Ste 638
Portland, OR 972256633
Phone: (503) 216-7000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 112 Open Payments records for all available years, with a total value of $1,955.
Total Amount is formed as General ($1,955) + Research ($0) + Ownership ($0) = $1,955.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: Novo Nordisk Inc ($459).
Total Amount
$1,955
General + Research + Ownership
Payments
112
Total payment records
General Amount
$1,955
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Novo Nordisk Inc | $459 |
| Dexcom, Inc. | $197 |
| Lilly USA, LLC | $179 |
| Corcept Therapeutics | $105 |
| Mannkind Corporation | $91 |
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: 2021-07-30
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20210722001154 | I | Physician Assistant | MO | TBD |
| I20210730001813 | I | Physician Assistant | IL | 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 | 235 | 160 | $0 |
| 82962 | Blood glucose (sugar) test performed by hand-held instrument | 218 | 144 | $0 |
| 83036 | Hemoglobin a1c level | 206 | 141 | $0 |
| 95251 | Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 69 | 47 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 23 | 19 | $0 |
Insurance plans in this area (ZIP 97208)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Physician Assistant | IL | |
| Family Practice | IL | |
| - | MO | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MO | |
| G A S T R O E N T E R O L O G Y | GA | |
| Physician Assistant | IL | |
| - | MO | |
| Gastroenterology, Gastroenterology, Internal Medicine | OH |
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