DR. MARK A GREGORIO (DNP, APRN, CNP, NP-C) – Adult Health Nurse Practitioner, NPI 1598066698
Adult Health Nurse Practitioner
Main info
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. MARK A GREGORIO (DNP, APRN, CNP, NP-C)
816 BROAD ST
MERIDEN, CT 064504350
Phone: (860) 823-0645
Type: Location
42 CONCORD ST
NEW HAVEN, CT 065124005
Phone: (860) 823-0645
Fax: (203) 469-9925
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $264.
Total Amount is formed as General ($264) + Research ($0) + Ownership ($0) = $264.
Last reported payment date: 2024-11-05 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($142).
Total Amount
$264
General + Research + Ownership
Payments
5
Total payment records
General Amount
$264
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-05
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $142 |
| ABBVIE INC. | $86 |
| Mylan Specialty L.P. | $20 |
| AstraZeneca Pharmaceuticals LP | $16 |
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: 2023-09-15
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20120127000001 | I | Nurse Practitioner | CT | TBD |
| I20220818000724 | I | Nurse Practitioner | MA | TBD |
| I20230915001152 | I | Nurse Practitioner | NH | 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 06450)
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