DR. ARON FLAGG (M.D.) – Pediatric Hematology & Oncology Physician, NPI 1255534855
Pediatric Hematology & Oncology Physician
Main info
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. ARON FLAGG (M.D.)
141, Wildcat Road, Wildcat, Madison Township, Clarion County, Pennsylvania, 16248, United States
MADISON, CT 064432471
Phone: (216) 633-2476
Type: Mailing
Smilow Cancer Hospital, 35, Park Street, New Haven, New Haven County, Connecticut, 06511, United States
PEDIATRIC HEM ONC SUITE 7TH FL
NEW HAVEN, CT 06511
Phone: (203) 785-4640
Fax: (203) 737-2228
Type: Location
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 $32.
Total Amount is formed as General ($32) + Research ($0) + Ownership ($0) = $32.
Last reported payment date: 2023-02-17 • Largest payer in this snapshot: JAZZ PHARMACEUTICALS INC. ($32).
Total Amount
$32
General + Research + Ownership
Payments
1
Total payment records
General Amount
$32
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-02-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| JAZZ PHARMACEUTICALS INC. | $32 |
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: 2019-01-28
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 |
|---|---|---|---|---|
| I20190128001983 | I | Pediatric Medicine | CT | 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 06443)
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Reviews
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