CYNTHIA LLERENA SERSHEN (F.N.P.) – Nurse Practitioner, NPI 1366614497
Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,971 NURSE PRACTITIONER in MA
Provider Addresses for CYNTHIA LLERENA SERSHEN (F.N.P.)
441 STUART ST STE 404
BOSTON, MA 021165019
Phone: (857) 317-2057
Type: Mailing
PROVIDER ENROLLMENT 41 MALL ROAD
BURLINGTON, MA 018050001
Phone:
Type: Mailing
441 Stuart St Ste 404
Boston, MA 021165019
Phone: (857) 317-2057
Type: Location
495 Western Ave
Brighton, MA 021351007
Phone: (617) 783-0500
Fax: (617) 562-1398
Type: Location
41 MALL RD
BURLINGTON, MA 018055019
Phone: (781) 744-8000
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 $136.
Total Amount is formed as General ($136) + Research ($0) + Ownership ($0) = $136.
Last reported payment date: 2024-05-08 • Largest payer in this snapshot: Janssen Biotech, Inc. ($95).
Total Amount
$136
General + Research + Ownership
Payments
3
Total payment records
General Amount
$136
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Biotech, Inc. | $95 |
| Incyte Corporation | $26 |
| ABBVIE INC. | $15 |
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: 2009-10-19
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 |
|---|---|---|---|---|
| I20091019000606 | I | Nurse Practitioner | 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 |
|---|---|---|---|---|
| 17003 | Destruction of precancer skin growth, 2-14 growths | 1,334 | 257 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 809 | 692 | $0 |
| 17000 | Destruction of precancer skin growth, 1 growth | 384 | 332 | $0 |
| 17110 | Destruction of skin growth, 1-14 growths | 204 | 181 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 140 | 125 | $0 |
Insurance plans in this area (ZIP 02116)
Loading plans...
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 |
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.