SHAUNA WILLIAMS (CRNA) – Certified Registered Nurse Anesthetist, NPI 1104991132
Certified Registered Nurse Anesthetist
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Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,311 CERTIFIED REGISTERED NURSE ANESTHETIST (CRNA) in MA
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Provider Addresses for SHAUNA WILLIAMS (CRNA)
Charlestown Post Office (mobile), Pattern Close, St Austell Bay, Charlestown, Cornwall, England, PL25 3FQ, United Kingdom
MASS GENERAL PHYSICIANS ORGANIZATION INC
CHARLESTOWN, MA 021299142
Phone: (617) 724-0287
Fax: (617) 726-2894
Type: Mailing
Massachusetts General Hospital, 55, Fruit Street, Beacon Hill, Boston, Suffolk County, Massachusetts, 02114, United States
CLN 309
BOSTON, MA 021142696
Phone: (617) 726-3030
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: 2006-12-29
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 |
|---|---|---|---|---|
| I20061229000040 | I | Certified Registered Nurse Anesthetist (Crna) | 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 |
|---|---|---|---|---|
| 00104 | Anesthesia for electroshock therapy | 109 | 78 | $0 |
| 00537 | Anesthesia for procedure to assess heart electrical activity | 17 | 17 | $0 |
| 00530 | Anesthesia for insertion of permanent heart pacemaker | 14 | 14 | $0 |
| 00670 | Anesthesia for extensive surgery on spine | 14 | 14 | $0 |
| 01402 | Anesthesia for procedure for total knee joint replacement | 13 | 13 | $0 |
Insurance plans in this area (ZIP 02129)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | MA | |
| Diagnostic Radiology | MA | |
| Nephrology, Internal Medicine | MA | |
| Nurse Practitioner | MA | |
| P A T H O L O G Y | NY | |
| P A T H O L O G Y | MA | |
| P S Y C H I A T R Y | MA | |
| Cardiac Electrophysiology, Internal Medicine, Cardiovascular Disease (Cardiology) | MA | |
| H E M A T O L O G Y/ O N C O L O G Y | MA | |
| N E U R O L O G Y | MA |
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