Mark Shelton, M.D.
NPI 1548251036 · Internal Medicine Physician · Winnfield, LA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Shelton, M.D. is a Internal Medicine Physician provider in Winnfield, LA (NPI 1548251036).
Provider details
- NPI number
- 1548251036
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- R005223 (LA)
Specialties & taxonomies
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
3,116 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 366 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 327 | $8 |
| Magnesium Level83735 | 324 | $7 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 311 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 310 | $80 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 274 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 155 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 489 | 121 |
| Levothyroxine Sodium | 406 | 80 |
| Potassium Chloride | 393 | 80 |
| Losartan Potassium | 287 | 71 |
| Metoprolol Succinate | 277 | 61 |
| Gabapentin | 240 | 44 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-02
- Last updated
- 2011-01-03
Frequently asked questions
- What is Mark Shelton's NPI number?
- Mark Shelton's National Provider Identifier (NPI) is 1548251036, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Shelton's specialty?
- Mark Shelton is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Shelton located?
- Mark Shelton's practice location on file with NPPES is 106 W Boundary Ave, Winnfield, LA 71483-2760.
- What is Mark Shelton's phone number?
- The practice phone number listed in the NPPES registry for Mark Shelton is (318) 628-4123.
- Does Mark Shelton accept Medicare?
- Mark Shelton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Shelton's NPI active?
- Yes — Mark Shelton's NPI (1548251036) is active in the NPPES registry as of the last update on 2011-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.