STACEY M DONEGAN (M.D.) – Emergency Medicine Physician, NPI 1174546709
Emergency Medicine Physician
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Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
839 EMERGENCY MEDICINE in CT
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Provider Addresses for STACEY M DONEGAN (M.D.)
Greenwich Hospital, 5, Perryridge Road, Greenwich, Western Connecticut Planning Region, Connecticut, 06830, United States
EMERGENCY DEPARTMENT
GREENWICH, CT 068304608
Phone: (203) 863-3637
Fax: (203) 863-3821
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: 2025-03-31
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 |
|---|---|---|---|---|
| I20060303000136 | I | Emergency Medicine | CT | TBD |
| I20250331001121 | I | Emergency Medicine | KY | 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 |
|---|---|---|---|---|
| 99284 | Emergency department visit with moderate level of medical decision making | 120 | 118 | $0 |
| 99285 | Emergency department visit with high level of medical decision making | 85 | 84 | $0 |
| 99291 | Critical care, first 30-74 minutes | 34 | 33 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 21 | 20 | $0 |
Insurance plans in this area (ZIP 06830)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiovascular Disease (Cardiology), Internal Medicine | CT | |
| Nuclear Medicine, Cardiovascular Disease (Cardiology), Internal Medicine | NY | |
| Emergency Medicine | NY | |
| - | CT | |
| Psychiatry, Neurology, Psychiatry | CT | |
| Emergency Medicine | NY | |
| - | CT | |
| Internal Medicine | CT | |
| - | CT | |
| - | CT |
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