DR. MARK DAVID DEXTER (M.D.) – Pediatric Critical Care Medicine Physician, NPI 1033408513
Pediatric Critical Care Medicine Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
782 CRITICAL CARE (INTENSIVISTS) in MA
Provider Addresses for DR. MARK DAVID DEXTER (M.D.)
800 Washington St
Boston, MA 021111552
Phone: (617) 636-8100
Fax: (617) 636-8391
Type: Location
282 Washington St
Hartford, CT 061063322
Phone: (860) 545-9850
Fax: (860) 545-8812
Type: Location
PO BOX 28302
NEW YORK, NY 100878302
Phone: (617) 636-5000
Type: Mailing
800 WASHINGTON ST
BOSTON, MA 021111552
Phone: (617) 636-8100
Fax: (617) 636-8391
Type: Location
300 LONGWOOD AVE
BOSTON, MA 021155737
Phone: (617) 355-6000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
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: 2023-01-12
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 |
|---|---|---|---|---|
| I20200115003026 | I | Critical Care (Intensivists) | MA | TBD |
| I20230112001045 | I | Pediatric Medicine | CT | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 02111)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| Nurse Practitioner | MA | |
| - | MA | |
| - | MA | |
| Allergy/Immunology, Pediatric Medicine | MA | |
| Hematology/Oncology, Pediatric Medicine | MA | |
| - | MA | |
| G A S T R O E N T E R O L O G Y | MA | |
| - | MA | |
| Pediatric Medicine, Infectious Disease | MA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.