GREGORY MARCELLIN (FNP-BC) – Family Nurse Practitioner, NPI 1881060861
Family Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for GREGORY MARCELLIN (FNP-BC)
14 DYER AVE
EVERETT, MA 021491201
Phone: (857) 869-0318
Type: Mailing
1601 WASHINGTON ST
BOSTON, MA 021181951
Phone: (617) 425-2000
Type: Location
1 Portsmouth Ave
Stratham, NH 038852585
Phone: (603) 772-3600
Fax: (603) 772-3601
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $64.
Total Amount is formed as General ($64) + Research ($0) + Ownership ($0) = $64.
Last reported payment date: 2023-12-19 • Largest payer in this snapshot: ABBVIE INC. ($27).
Total Amount
$64
General + Research + Ownership
Payments
3
Total payment records
General Amount
$64
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $27 |
| PFIZER INC. | $23 |
| Takeda Pharmaceuticals U.S.A., Inc. | $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: 2022-11-16
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 |
|---|---|---|---|---|
| I20161115000009 | I | Nurse Practitioner | MA | TBD |
| I20221116002862 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 16 | 16 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 15 | 15 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 02149)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| Physician Assistant | VT | |
| Physician Assistant | MA | |
| Physician Assistant | NH | |
| - | MA | |
| Nurse Practitioner | MA | |
| Internal Medicine, Pediatric Medicine | MA | |
| Physician Assistant | MA | |
| - | MA | |
| - | 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.