DR. LOUIS H. JR. GUERNSEY (MD) – Pediatric Pulmonology Physician, NPI 1134211014
Pediatric Pulmonology Physician
Main info
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. LOUIS H. JR. GUERNSEY (MD)
A.I. DUPONT HOSPITAL FOR CHILDREN
1600 ROCKLAND ROAD
WILMINGTON, DE 198033607
Phone: (302) 651-4000
Fax: (302) 651-4945
Type: Location
191, Mill Street, Rockport, Knox County, Maine, 04856, United States
PROVIDER ENROLLMENT DEPT
ROCKLAND, DE 197320191
Phone: (302) 651-6212
Fax: (302) 651-4945
Type: Mailing
PO BOX 115
CHESTER SPRINGS, PA 194250115
Phone: (610) 529-9595
Type: Mailing
6095 DURHAM RD
PIPERSVILLE, PA 189471215
Phone: (610) 844-8611
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: 2017-07-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20141021002454 | I | Pulmonary Disease | NJ | TBD |
| I20170717000949 | I | Pulmonary Disease | 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 19803)
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