LYNN VAN UMMERSEN (MD) – Medical Oncology Physician, NPI 1447211818
Medical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,007 HEMATOLOGY/ONCOLOGY in FL
Provider Addresses for LYNN VAN UMMERSEN (MD)
810 N Spring Garden Ave Ste 101
Deland, FL 327203106
Phone: (386) 943-9446
Fax: (386) 943-9385
Type: Location
PO BOX 102222
ATTN: CREDENTIAL DEPARTMENT
ATLANTA, GA 303682222
Phone: (239) 432-8339
Fax: (239) 278-3350
Type: Mailing
765, Image Way, Orange City, Volusia County, Florida, 32763, United States
ORANGE CITY, FL 327638399
Phone: (386) 774-7411
Fax: (386) 774-7412
Type: Location
Veronica S Shoemaker Blvd, Fort Myers, Lee County, Florida, 33916, United States
ATTN: CREDENTIAL DEPARTMENT
FORT MYERS, FL 339162216
Phone: (239) 432-8339
Fax: (239) 278-3350
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 159 Open Payments records for all available years, with a total value of $3,167.
Total Amount is formed as General ($3,167) + Research ($0) + Ownership ($0) = $3,167.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Novartis Pharmaceuticals Corporation ($466).
Total Amount
$3,167
General + Research + Ownership
Payments
159
Total payment records
General Amount
$3,167
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Novartis Pharmaceuticals Corporation | $466 |
| Celgene Corporation | $176 |
| Merck Sharp & Dohme LLC | $151 |
| Gilead Sciences, Inc. | $144 |
| Janssen Biotech, Inc. | $119 |
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: 2009-06-09
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 |
|---|---|---|---|---|
| I20090609000054 | I | Hematology/Oncology | FL | 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 |
|---|---|---|---|---|
| Q0138 | Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) | 15,300 | 21 | $0 |
| J1756 | Injection, iron sucrose, 1 mg | 5,600 | 11 | $0 |
| J0897 | Injection, denosumab, 1 mg | 3,480 | 24 | $0 |
| J0885 | Injection, epoetin alfa, (for non-esrd use), 1000 units | 2,240 | 11 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 787 | 22 | $0 |
Insurance plans in this area (ZIP 32720)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| HEMATOLOGY/ONCOLOGY | FL | 85610 | Blood test, clotting time | 136 | 32 |
| HEMATOLOGY/ONCOLOGY | FL | 96367 | Infusion into a vein for therapy prevention or diagnosis additional sequential infusion up to 1 hour | 182 | 38 |
| HEMATOLOGY/ONCOLOGY | FL | 96375 | Injection of different drug or substance into a vein for therapy, diagnosis, or prevention | 42 | 14 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Medical Oncology | FL | |
| Medical Oncology, Hematology/Oncology | FL | |
| H E M A T O L O G Y/ O N C O L O G Y | FL | |
| H E M A T O L O G Y/ O N C O L O G Y | FL | |
| Internal Medicine, Hematology/Oncology | FL | |
| - | GA | |
| Hematology/Oncology, Internal Medicine | GA | |
| H E M A T O L O G Y/ O N C O L O G Y | FL | |
| Hospice/Palliative Care, Internal Medicine | FL | |
| H E M A T O L O G Y/ O N C O L O G Y | GA |
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