NICOLA CLARKE WALLEN (PMHNP) – Psychiatric/Mental Health Nurse Practitioner, NPI 1659413615
Psychiatric/Mental Health Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
6,767 NURSE PRACTITIONER in MD
Provider Addresses for NICOLA CLARKE WALLEN (PMHNP)
3307 DUNWOOD RIDGE TER
BOWIE, MD 207211259
Phone: (202) 569-2638
Type: Mailing
3261 OLD WASHINGTON RD STE 2020
WALDORF, MD 206023231
Phone: (301) 960-8930
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: 2020-08-28
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 |
|---|---|---|---|---|
| I20200828000015 | I | Nurse Practitioner | MD | 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 |
|---|---|---|---|---|
| 90833 | Psychotherapy with evaluation and management visit, 30 minutes | 79 | 35 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 76 | 37 | $0 |
Insurance plans in this area (ZIP 20721)
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