DR. ERIN SIENKIEWICZ (MD) – Obstetrics & Gynecology Physician, NPI 1073930392
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,231 OBSTETRICS/GYNECOLOGY in MA
Provider Addresses for DR. ERIN SIENKIEWICZ (MD)
131 ORNAC
STE 830
CONCORD, MA 017424191
Phone: (617) 636-5000
Type: Mailing
800 WASHINGTON ST
BOSTON, MA 021111552
Phone: (617) 636-5000
Type: Location
131 ORNAC STE 830
CONCORD, MA 017424191
Phone: (617) 636-5000
Fax: (978) 371-8277
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 15 Open Payments records for all available years, with a total value of $2,652.
Total Amount is formed as General ($2,652) + Research ($0) + Ownership ($0) = $2,652.
Last reported payment date: 2024-11-16 • Largest payer in this snapshot: Hologic Sales and Service, LLC ($1,598).
Total Amount
$2,652
General + Research + Ownership
Payments
15
Total payment records
General Amount
$2,652
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Hologic Sales and Service, LLC | $1,598 |
| Bolder Surgical, LLC | $675 |
| Gynesonics, Inc. | $138 |
| Astellas Pharma US Inc | $104 |
| Organon LLC | $25 |
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: 2018-10-05
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 |
|---|---|---|---|---|
| I20181005002154 | I | Obstetrics/Gynecology | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 22 | 18 | $0 |
| G0101 | Cervical or vaginal cancer screening; pelvic and clinical breast examination | 11 | 11 | $0 |
Insurance plans in this area (ZIP 01742)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Nurse Midwife (Cnm) | MA | |
| - | MA | |
| Nurse Practitioner | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MA | |
| Nurse Practitioner | MA | |
| Certified Nurse Midwife (Cnm) | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | PA | |
| Nurse Practitioner | MA | |
| Certified Nurse Midwife (Cnm) | MA |
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