DR. AVIAN CHIEN LEONG VINCENT CHANG (M.D.) – Surgery Physician, NPI 1700271178
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
785 GENERAL SURGERY in MO
Provider Addresses for DR. AVIAN CHIEN LEONG VINCENT CHANG (M.D.)
660 S EUCLID AVE
CAMPUS BOX 8109
ST LOUIS, MO 631101010
Phone: (314) 362-5000
Type: Mailing
1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 631101003
Phone: (314) 362-5000
Type: Location
417 STATE ST STE 340
BANGOR, ME 044016634
Phone: (207) 973-4949
Type: Location
43 WHITING HILL RD STE 300
BREWER, ME 044121006
Phone: (207) 973-5000
Fax: (207) 973-5042
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $20.
Total Amount is formed as General ($20) + Research ($0) + Ownership ($0) = $20.
Last reported payment date: 2024-02-16 • Largest payer in this snapshot: CSL Behring ($20).
Total Amount
$20
General + Research + Ownership
Payments
1
Total payment records
General Amount
$20
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| CSL Behring | $20 |
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: 2021-07-20
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 |
|---|---|---|---|---|
| I20210720002205 | I | General Surgery | ME | 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 |
|---|---|---|---|---|
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 24 | 24 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 24 | 15 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 20 | 18 | $0 |
| 99291 | Critical care, first 30-74 minutes | 20 | 16 | $0 |
Insurance plans in this area (ZIP 63110)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | ME | |
| Nurse Practitioner | ME | |
| Certified Registered Nurse Anesthetist (Crna) | ME | |
| Cardiovascular Disease (Cardiology) | ME | |
| Endocrinology, Internal Medicine | ME | |
| - | ME | |
| Nurse Practitioner | ME | |
| Thoracic Surgery | ME | |
| H O S P I T A L I S T | ME | |
| - | NJ |
Reviews
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