MS. TAMMY L RISTAU (CRNP) – Nurse Practitioner, NPI 1730144122
Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
11,473 NURSE PRACTITIONER in PA
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Provider Addresses for MS. TAMMY L RISTAU (CRNP)
2, Crescent Park, Warren, Warren County, Pennsylvania, 16365, United States
WARREN, PA 163652111
Phone: (814) 723-3300
Type: Mailing
511 SOUTH MAIN STREET
SHEFFIELD, PA 16347
Phone: (814) 584-1130
Fax: (814) 584-1133
Type: Mailing
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: 2006-01-09
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 |
|---|---|---|---|---|
| I20060109000264 | I | Nurse Practitioner | PA | 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 | 294 | 123 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 37 | 33 | $0 |
Insurance plans in this area (ZIP 16365)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Gastroenterology | PA | |
| - | NV | |
| Certified Registered Nurse Anesthetist (Crna) | PA | |
| General Surgery | PA | |
| Physician Assistant | PA | |
| - | PA | |
| Internal Medicine | PA | |
| - | PA | |
| P O D I A T R Y | KY | |
| Nurse Practitioner | PA |
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