DR. MARK WILLIAM JENNINGS (M.D.) – Anesthesiology Physician, NPI 1396124988
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,323 ANESTHESIOLOGY in MA
Provider Addresses for DR. MARK WILLIAM JENNINGS (M.D.)
133 SEAPORT BLVD UNIT 1819
BOSTON, MA 022102674
Phone:
Type: Mailing
330 BROOKLINE AVE # FD-221
BOSTON, MA 022155491
Phone: (607) 426-8112
Type: Mailing
2800 MAIN ST
BRIDGEPORT, CT 066064201
Phone: (203) 576-6000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $113.
Total Amount is formed as General ($113) + Research ($0) + Ownership ($0) = $113.
Last reported payment date: 2024-09-05 • Largest payer in this snapshot: Heron Therapeutics, Inc. ($99).
Total Amount
$113
General + Research + Ownership
Payments
2
Total payment records
General Amount
$113
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-05
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Heron Therapeutics, Inc. | $99 |
| Rayner Intraocular Lenses Limited | $14 |
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: 2022-01-29
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 |
|---|---|---|---|---|
| I20190806001436 | I | Anesthesiology | HI | TBD |
| I20220129000005 | I | Anesthesiology | 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 |
|---|---|---|---|---|
| 00142 | Anesthesia for lens surgery | 525 | 483 | $0 |
| 00140 | Anesthesia for other procedure on eye | 51 | 46 | $0 |
| 01938 | Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance | 25 | 25 | $0 |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 21 | 21 | $0 |
| 00812 | Anesthesia for exam of colon using an endoscope | 21 | 21 | $0 |
Insurance plans in this area (ZIP 02210)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | NJ | |
| A N E S T H E S I O L O G Y | MA | |
| - | VT | |
| Certified Registered Nurse Anesthetist (Crna) | NY | |
| Certified Registered Nurse Anesthetist (Crna) | RI | |
| A N E S T H E S I O L O G Y | CT | |
| Pain Management | MA | |
| A N E S T H E S I O L O G Y | MA | |
| A N E S T H E S I O L O G Y | MA | |
| A N E S T H E S I O L O G Y | NY |
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