Mark R. Fleisher
NPI 1134125891ActiveIndividual· Internal Medicine, Gastroenterology· Jacksonville, FL
Internal Medicine, Gastroenterology with Borland Groover Clinic, PA, practicing in Jacksonville, Florida. Their prescriptions cost Medicare Part D more than their services did: $1,211,348 for 1,902 claims, against $89,172 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 7 companies reporting payments in 2025, $598.01 in all, mostly food and beverage. Lists Baptist Health Medical Center - Jacksonville and 1 other hospital as hospital affiliations.
Overview
| NPI | 1134125891 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jun 27, 2005 |
| Last updated in NPPES | May 23, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | ME 0076032 | FL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 328 |
|---|---|
| Services billed | 1,328 across 28 procedure codes |
| Paid by Medicare | $89,172 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,902 · 4,455 30-day fills |
|---|---|
| Patients | 570 |
| Total drug cost | $1,211,348 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Borland Groover Clinic, PAOrmond Beach, FL · 130 clinicians
Hospital affiliations
- Baptist Health Medical Center - JacksonvilleJacksonville, FL
- Baptist Medical Center BeachesJacksonville Beach, FL
Industry payments (Open Payments)
- 2025$598.01 · 37 payments from 7 companies
- 2024$877.78 · 39 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $165.18 | 14 |
| Genzyme Corporation | $152.70 | 7 |
| Aimmune Therapeutics, Inc. | $138.72 | 7 |
| Celltrion USA Inc. | $43.64 | 2 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $41.57 | 2 |
What the 2025 payments were for
- Food and Beverage$598.01 · 37 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Jacksonville
- 1003045634
- 1003251356
- 1023349503
- 1073719688
- 1083024715
- 1083097869
- 1083649784
- 1083878961
- 1104809151
- 1134118003
- 1164798369
- 1194717116
All 141 gastroenterologists in Jacksonville · All gastroenterologists in Florida