Mark J. Fleschler, M.D.
NPI 1083652986ActiveIndividual· Internal Medicine, Geriatric Medicine· Dallas, TX
Internal Medicine, Geriatric Medicine (M.D.) in Dallas, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $797,321 for 6,342 claims, against $111,030 paid for services in 2024.
Overview
| NPI | 1083652986 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 3, 2006 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | G8110 | TX |
| Internal Medicine | 207R00000X | G8110 | TX |
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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 321 |
|---|---|
| Services billed | 2,271 across 36 procedure codes |
| Paid by Medicare | $111,030 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,342 · 14,471 30-day fills |
|---|---|
| Patients | 362 |
| Total drug cost | $797,321 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine |
Medical group
- Fleschler and Phillips Medical Group LLCDallas, TX · 2 clinicians
Hospital affiliations
- Baylor University Medical CenterDallas, TX
- Medical City Dallas HospitalDallas, TX
- Texas Health Presbyterian Hospital DallasDallas, TX
- Texas Health Presbyterian Hospital PlanoPlano, TX
- Ut of Texas Southwestern University Hospital - William P. Clements Jr.Dallas, TX
Other facilities
- Dfw Home HealthHome health agency · Dallas, TX
- The Legacy at HomeHome health agency · Plano, TX
- Baylor Scott & White Institute for RehabilitationInpatient rehabilitation facility · Dallas, TX
- The Legacy Midtown ParkNursing home · Dallas, TX
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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