DR. NATHANIEL P FLEISCHNER (M.D.) – Internal Medicine Physician, NPI 1083880926
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
12,368 INTERNAL MEDICINE in FL
Provider Addresses for DR. NATHANIEL P FLEISCHNER (M.D.)
11700 OKEECHOBEE BLVD
ROYAL PALM BEACH, FL 334118721
Phone: (561) 790-0789
Fax: (855) 753-3317
Type: Location
102, Pineloch Avenue, Orlando, Orange County, Florida, 32806, United States
SUITE 21
ORLANDO, FL 328066100
Phone: (407) 481-7471
Fax: (407) 481-7190
Type: Mailing
Baptist Hospital, 1000, West Moreno Street, Pensacola, Escambia County, Florida, 32501, United States
PENSACOLA, FL 325012316
Phone: (850) 434-4011
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 22 Open Payments records for all available years, with a total value of $400.
Total Amount is formed as General ($400) + Research ($0) + Ownership ($0) = $400.
Last reported payment date: 2024-10-28 • Largest payer in this snapshot: Novo Nordisk Inc ($111).
Total Amount
$400
General + Research + Ownership
Payments
22
Total payment records
General Amount
$400
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-28
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Novo Nordisk Inc | $111 |
| GlaxoSmithKline, LLC. | $66 |
| Exact Sciences Corporation | $49 |
| PFIZER INC. | $39 |
| Abbott Laboratories | $23 |
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: 2009-12-12
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 |
|---|---|---|---|---|
| I20091212000100 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 120 | 72 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 101 | 56 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 62 | 17 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 49 | 36 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 31 | 17 | $0 |
Insurance plans in this area (ZIP 33411)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | FL | |
| Nurse Practitioner | FL | |
| Internal Medicine | WI | |
| Nurse Practitioner | FL | |
| Nurse Practitioner | FL | |
| Internal Medicine | FL | |
| Internal Medicine | FL | |
| Family Practice, General Practice | FL | |
| H O S P I T A L I S T | FL | |
| Nurse Practitioner | FL |
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