ELEFTHERIA TSAVOUSSIS (PMHCNS-BC) – Adult Psychiatric/Mental Health Clinical Nurse Specialist, NPI 1821073586
Adult Psychiatric/Mental Health Clinical Nurse Specialist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
199 CERTIFIED CLINICAL NURSE SPECIALIST (CNS) in MA
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Provider Addresses for ELEFTHERIA TSAVOUSSIS (PMHCNS-BC)
210, Bear Hill Road, Waltham, Middlesex County, Massachusetts, 02451, United States
SUITE 202
WALTHAM, MA 02451
Phone: (781) 966-0070
Fax: (781) 915-0755
Mailing address matches the actual address.
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: 2016-09-09
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20050727000642 | I | Nurse Practitioner | MA | TBD |
| I20160909001224 | I | Certified Clinical Nurse Specialist (Cns) | 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 |
|---|---|---|---|---|
| 90836 | Psychotherapy with evaluation and management visit, 45 minutes | 124 | 29 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 102 | 29 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 22 | 14 | $0 |
Insurance plans in this area (ZIP 02451)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CERTIFIED CLINICAL NURSE SPECIALIST | MA | 90836 | Psychotherapy, 45 minutes with patient and/or family member | 72 | 21 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Clinical Social Worker | MA | |
| - | MA | |
| Certified Clinical Nurse Specialist (Cns) | MA | |
| Nurse Practitioner | MA | |
| Clinical Social Worker | MA | |
| Nurse Practitioner | MA | |
| Clinical Social Worker | MA | |
| - | MA |
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