Mark Fleschler, M.D.
NPI 1083652986 · Geriatric Medicine (Internal Medicine) Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Fleschler, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Dallas, TX (NPI 1083652986).
Provider details
- NPI number
- 1083652986
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G8110 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,077 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 393 | $127 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 333 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 311 | $90 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 240 | $128 |
| Automated Urinalysis Test81003 | 141 | $2 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 391 | 117 |
| Atorvastatin Calcium | 292 | 78 |
| Levothyroxine Sodium | 260 | 68 |
| Amlodipine Besylate | 199 | 61 |
| Ezetimibe | 173 | 52 |
| Olmesartan Medoxomil | 147 | 41 |
| Losartan Potassium | 143 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-03
- Last updated
- 2022-07-21
Frequently asked questions
- What is Mark Fleschler's NPI number?
- Mark Fleschler's National Provider Identifier (NPI) is 1083652986, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Fleschler's specialty?
- Mark Fleschler is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Fleschler located?
- Mark Fleschler's practice location on file with NPPES is 8230 Walnut Hill Ln Ste 800, Dallas, TX 75231-4491.
- What is Mark Fleschler's phone number?
- The practice phone number listed in the NPPES registry for Mark Fleschler is (214) 345-1220.
- Does Mark Fleschler accept Medicare?
- Mark Fleschler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Fleschler's NPI active?
- Yes — Mark Fleschler's NPI (1083652986) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.