BONNIE CATHERINE CALLAHAN (M.D.) – Internal Medicine Physician, NPI 1073728218
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
777 INTERNAL MEDICINE in DE
Provider Addresses for BONNIE CATHERINE CALLAHAN (M.D.)
4755 OGLETOWN STANTON ROAD
SUITE 5A43
NEWARK, DE 197182200
Phone: (302) 623-0188
Fax: (302) 733-5640
Type: Location
1011, West Baltimore Pike, Penn Township, Chester County, Pennsylvania, 19352, United States
SUITE 301
WEST GROVE, PA 193909446
Phone: (610) 869-3620
Type: Location
1232R, South Street, Bella Vista, South Philadelphia, Philadelphia, Philadelphia County, Pennsylvania, 19146, United States
PHILADELPHIA, PA 19147
Phone: (215) 514-0521
Type: Mailing
1601 KIRKWOOD HWY
WILMINGTON, DE 198054917
Phone: (302) 994-2511
Type: Mailing
1601 Kirkwood Hwy
Wilmington, DE 198054917
Phone: (302) 994-2511
Type: Location
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: 2024-09-24
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 |
|---|---|---|---|---|
| I20240924000721 | I | Internal Medicine | DE | 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 19718)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | DE | |
| - | DE | |
| - | DE | |
| - | PA | |
| Internal Medicine | DE | |
| Physician Assistant | DE | |
| Nurse Practitioner | PA | |
| General Surgery | IL | |
| Diagnostic Radiology | NY | |
| Internal Medicine | NY |
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