MRS. MARILYN R GEBEL-SITTS (LCSW) – Clinical Social Worker, NPI 1437135639
Clinical Social Worker
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,023 CLINICAL SOCIAL WORKER in VA
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Provider Addresses for MRS. MARILYN R GEBEL-SITTS (LCSW)
McWhorter Place, Annandale, Fairfax County, Virginia, 22003, United States
ANNANDALE, VA 220035605
Phone: (703) 916-9010
Fax: (703) 642-6082
Type: Mailing
4705 PICKETT RD
FAIRFAX, VA 220322027
Phone: (703) 728-4095
Fax: (703) 642-6082
Type: Mailing
1091 MARKET ST
FORT MILL, SC 297086496
Phone: (703) 728-4095
Fax: (703) 642-6082
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: 2011-02-17
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 |
|---|---|---|---|---|
| I20110217000162 | I | Clinical Social Worker | DC | 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 |
|---|---|---|---|---|
| 90837 | Psychotherapy, 1 hour | 252 | 19 | $0 |
Insurance plans in this area (ZIP 22003)
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