DAVID R CLARKSON (M.D.) – Hematology & Oncology Physician, NPI 1588656920
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
194 HEMATOLOGY/ONCOLOGY in AL
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Provider Addresses for DAVID R CLARKSON (M.D.)
PO BOX 40430
MOBILE, AL 366400430
Phone: (251) 665-8000
Fax: (251) 665-8010
Type: Mailing
Springhill Avenue, South Crichton, Crichton, Mobile, Mobile County, Alabama, 36608, United States
MOBILE, AL 366041405
Phone: (251) 665-8000
Fax: (251) 665-8010
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $89.
Total Amount is formed as General ($89) + Research ($0) + Ownership ($0) = $89.
Last reported payment date: 2024-06-10 • Largest payer in this snapshot: Edwards Lifesciences Corporation ($40).
Total Amount
$89
General + Research + Ownership
Payments
3
Total payment records
General Amount
$89
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Edwards Lifesciences Corporation | $40 |
| ABBVIE INC. | $27 |
| Novo Nordisk Inc | $22 |
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: 2007-03-29
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 |
|---|---|---|---|---|
| I20070329000335 | I | Hematology/Oncology | AL | 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 36640)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | AL | |
| Internal Medicine | AL | |
| Infectious Disease | AL | |
| Hospitalist, Internal Medicine | AL | |
| - | GA | |
| Clinical Social Worker | AL | |
| Internal Medicine | AL | |
| Infectious Disease | LA | |
| Emergency Medicine, Internal Medicine | AL | |
| Clinical Social Worker | MO |
Reviews
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