MS. MARY C. CHANG (D.O.) – Obstetrics & Gynecology Physician, NPI 1407870389
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for MS. MARY C. CHANG (D.O.)
24 MORRILL PL STE 2
AMESBURY, MA 019133530
Phone: (978) 834-8074
Fax: (978) 834-8077
Type: Mailing
600 PRIMROSE ST STE 202
HAVERHILL, MA 018302659
Phone: (978) 556-1000
Fax: (978) 556-0094
Type: Location
Market Basket, 2, Water Street, Highlands, Haverhill, Essex County, Massachusetts, 01830, United States
CENTRAL PLAZA
HAVERHILL, MA 018306229
Phone: (978) 556-0100
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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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: 2011-03-12
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 |
|---|---|---|---|---|
| I20110312000028 | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 01913)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| Nurse Practitioner | NH | |
| Nurse Practitioner | MA | |
| Certified Nurse Midwife (Cnm) | MA | |
| General Surgery | MA | |
| Nurse Practitioner | MA | |
| Infectious Disease | NH | |
| - | MA | |
| Nurse Practitioner | MA | |
| Certified Nurse Midwife (Cnm) | TN |
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