SHARON A SIWIEC (NP) – Adult Health Nurse Practitioner, NPI 1548226731
Adult Health Nurse Practitioner
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
8,972 NURSE PRACTITIONER in MA
Provider Addresses for SHARON A SIWIEC (NP)
133 BROOKLINE AVE
BOSTON, MA 022153904
Phone: (617) 421-1000
Type: Location
Harvard Vanguard, 147, Milk Street, Dock Square, Financial District, Boston, Suffolk County, Massachusetts, 02110, United States
PROVIDER ENROLLMENT - 9TH FLOOR
BOSTON, MA 021094806
Phone: (617) 559-8053
Fax: (617) 421-3487
Type: Mailing
Chestnut Hill-West Roxbury - Harvard Vanguard, 291, Independence Drive, Hancock Village, Brookline, Norfolk County, Massachusetts, 02467, United States
CHESTNUT HILL, MA 024673628
Phone: (617) 325-2800
Fax: (617) 541-7500
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: 2005-06-29
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 |
|---|---|---|---|---|
| I20050629000368 | I | Nurse Practitioner | 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 |
|---|---|---|---|---|
| 99441 | Telephone medical discussion with physician, 5-10 minutes | 20 | 20 | $0 |
Insurance plans in this area (ZIP 02215)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| Family Practice | MA | |
| D E R M A T O L O G Y | MA | |
| Emergency Medicine | MA | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | MA | |
| - | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MA | |
| - | MA | |
| Internal Medicine | MA | |
| O T O L A R Y N G O L O G Y | MA |
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