DR. MARK ANTHONY GENDREAU (M.D.) – Emergency Medicine Physician, NPI 1184666315
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. MARK ANTHONY GENDREAU (M.D.)
Lahey Hospital & Medical Center, 41, Burlington Mall Road, Burlington, Middlesex County, Massachusetts, 01805, United States
41 MALL RD
BURLINGTON, MA 018050001
Phone: (978) 538-4600
Fax: (978) 538-4707
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)
CMS reports 1 Open Payments records for all available years, with a total value of $144.
Total Amount is formed as General ($144) + Research ($0) + Ownership ($0) = $144.
Last reported payment date: 2023-03-29 • Largest payer in this snapshot: Relievant Medsystems, Inc. ($144).
Total Amount
$144
General + Research + Ownership
Payments
1
Total payment records
General Amount
$144
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-03-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Relievant Medsystems, Inc. | $144 |
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: 2010-04-23
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 |
|---|---|---|---|---|
| I20100423000471 | I | Emergency Medicine | 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 |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 26 | 26 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 21 | 21 | $0 |
Insurance plans in this area (ZIP 01805)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MA | |
| - | MA | |
| G A S T R O E N T E R O L O G Y | NY | |
| Physician Assistant | MA | |
| A N E S T H E S I O L O G Y | MA |
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