LARISSA UMBERGER (PA-S3) – Physician Assistant, NPI 1093564932
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,161 PHYSICIAN ASSISTANT in CO
Provider Addresses for LARISSA UMBERGER (PA-S3)
PO BOX 529
OLATHE, CO 814250529
Phone: (703) 236-1419
Type: Mailing
1250 VALLEY VIEW DR
DELTA, CO 814163138
Phone: (970) 874-8981
Type: Location
308 Main St
Olathe, CO 81425
Phone: (970) 323-6141
Type: Location
PO Box 25221
Belfast, ME 049152003
Phone: (970) 323-6141
Type: Location
PO Box 529
Olathe, CO 814250529
Phone: (970) 323-6141
Type: Location
1010 S Rio Grande Ave
Montrose, CO 814014831
Phone: (970) 497-3333
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2025-09-18
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 |
|---|---|---|---|---|
| I20250918002874 | I | Physician Assistant | CO | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 81425)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | CO | |
| Clinical Social Worker | CO | |
| Physician Assistant | CO | |
| Physician Assistant | CO | |
| Physician Assistant | CO | |
| Physician Assistant | CO | |
| Family Practice | CO | |
| Nurse Practitioner | CO | |
| Mental Health Counselor | CO | |
| Family Practice | OR |
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