KATHERINE SIOBHAN RIVEST (PA-C) – Medical Physician Assistant, NPI 1164766226
Medical Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,091 PHYSICIAN ASSISTANT in MA
Provider Addresses for KATHERINE SIOBHAN RIVEST (PA-C)
6 PARC PL
SUITE A
SOUTHAMPTON, MA 010739277
Phone: (413) 529-9282
Fax: (413) 527-7526
Type: Mailing
2 MECHANIC ST
SUITE A
EASTHAMPTON, MA 010271562
Phone: (413) 529-9282
Fax: (413) 527-7526
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $16.
Total Amount is formed as General ($16) + Research ($0) + Ownership ($0) = $16.
Last reported payment date: 2023-02-07 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($16).
Total Amount
$16
General + Research + Ownership
Payments
1
Total payment records
General Amount
$16
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-02-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $16 |
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: 2014-04-17
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 |
|---|---|---|---|---|
| I20140417002043 | I | Physician Assistant | MA | 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 | 48 | 47 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 01073)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | FL | |
| Emergency Medicine | AL | |
| Physician Assistant | MA | |
| Physician Assistant | IL | |
| Physician Assistant | MA | |
| Physician Assistant | MA | |
| Internal Medicine | MA | |
| Nurse Practitioner | CT | |
| Internal Medicine | MA | |
| Nurse Practitioner | MA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.