John Marston, MD
NPI 1093219701 · Internal Medicine Physician · Baton Rouge, LA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Marston, MD is a Internal Medicine Physician provider in Baton Rouge, LA (NPI 1093219701).
Provider details
- NPI number
- 1093219701
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 309572 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,215 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 296 | $118 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 133 | $9 |
| 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'SG2211 | 118 | $15 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 73 | $8 |
| Hemoglobin A1c Level83036 | 67 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 97 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 209 | 77 |
| Levothyroxine Sodium | 162 | 51 |
| Amlodipine Besylate | 133 | 46 |
| Hydrochlorothiazide | 124 | 45 |
| Trazodone Hcl | 102 | 34 |
| Gabapentin | 96 | 34 |
| Prednisone | 95 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 7373 Perkins RdBaton Rouge, LA 70808-4373Phone: (225) 246-9790Fax: (225) 246-9160
Registry dates
- Enumerated
- 2018-03-19
- Last updated
- 2022-03-17
- Certified
- 2022-03-17
Frequently asked questions
- What is John Marston's NPI number?
- John Marston's National Provider Identifier (NPI) is 1093219701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Marston's specialty?
- John Marston is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Marston located?
- John Marston's practice location on file with NPPES is 5246 Brittany Dr, Baton Rouge, LA 70808-9136.
- What is John Marston's phone number?
- The practice phone number listed in the NPPES registry for John Marston is (225) 757-4070.
- Does John Marston accept Medicare?
- John Marston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Marston's NPI active?
- Yes — John Marston's NPI (1093219701) is active in the NPPES registry as of the last update on 2022-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.