DR. WILLIAM MACLEOD KIRBY (MD) – Anatomic Pathology & Clinical Pathology Physician, NPI 1265438360
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. WILLIAM MACLEOD KIRBY (MD)
PO BOX 12210
WILMINGTON, DE 198502210
Phone: (302) 454-9830
Fax: (302) 454-1445
Type: Mailing
4755 OGLETOWN STANTON RD
NEWARK, DE 197180001
Phone: (302) 454-9830
Fax: (302) 454-1445
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
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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: 2011-05-27
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 |
|---|---|---|---|---|
| I20110527000556 | I | Pathology | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 695 | 392 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 444 | 134 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 315 | 259 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 259 | 175 | $0 |
| 88312 | Special stained specimen slides to identify organisms including interpretation and report | 163 | 136 | $0 |
Insurance plans in this area (ZIP 19850)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | DE | 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 132 | 118 |
| PATHOLOGY | DE | 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 372 | 207 |
| PATHOLOGY | DE | 88342 | Tissue or cell analysis by immunologic technique | 280 | 221 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | DE | |
| - | DE | |
| P A T H O L O G Y | DE |
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