DR. JOHN V. CHANG (D.O.) – Emergency Medicine Physician, NPI 1679557326
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,899 FAMILY PRACTICE in MA
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Provider Addresses for DR. JOHN V. CHANG (D.O.)
1, Castle Drive, Wilmington, Middlesex County, Massachusetts, 01887, United States
WILMINGTON, MA 018873188
Phone: (978) 302-7300
Type: Mailing
Greater Lawrence Family Health Center, 34, Haverhill Street, Lawrence, Essex County, Massachusetts, 01841, United States
LAWRENCE, MA 018412884
Phone: (978) 686-0090
Fax: (978) 681-5963
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $69.
Total Amount is formed as General ($69) + Research ($0) + Ownership ($0) = $69.
Last reported payment date: 2024-09-19 • Largest payer in this snapshot: Keystone Dental Inc. ($69).
Total Amount
$69
General + Research + Ownership
Payments
2
Total payment records
General Amount
$69
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Keystone Dental Inc. | $69 |
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: 2005-04-05
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 |
|---|---|---|---|---|
| I20050405000273 | I | Emergency Medicine | 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 01887)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Registered Dietitian Or Nutrition Professional | MA | |
| Family Practice | MA | |
| Family Practice, Sports Medicine | MA | |
| Internal Medicine | MA | |
| Family Practice | MA | |
| Clinical Social Worker | MA | |
| Registered Dietitian Or Nutrition Professional | MA | |
| Family Practice | MA | |
| Family Practice | MA | |
| Family Practice | MA |
Reviews
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