Daniel Michael Marion, M.D.
NPI 1275875908ActiveIndividual· Internal Medicine· Chesterfield, MO
Internal Medicine (M.D.) in Chesterfield, Missouri, trained at Saint Louis University School of Medicine (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $2,134,231 for 22,650 claims, against $153,176 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 25 companies reporting payments in 2025, $2,474 in all, mostly food and beverage.
Overview
| NPI | 1275875908 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 20, 2013 |
| Last updated in NPPES | Nov 22, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 2016018222 | MO |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 631 |
|---|---|
| Services billed | 1,941 across 23 procedure codes |
| Paid by Medicare | $153,176 |
Part D prescriptions in 2024
| Prescriptions (claims) | 22,650 · 56,054 30-day fills |
|---|---|
| Patients | 1,249 |
| Total drug cost | $2,134,231 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Internal Medicine |
Medical groups
- Aging Well Health Care, LLCSaint Louis, MO · 238 clinicians
- Conway Internists, LLCChesterfield, MO · 4 clinicians
Hospital affiliations
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Mercy Hospital St LouisSaint Louis, MO
- Missouri Baptist Medical CenterSaint Louis, MO
- St Lukes HospitalChesterfield, MO
Other facilities
- Amedisys Home Health of MissouriHome health agency · Hillsboro, MO
- Bjc Home Care ServicesHome health agency · Saint Louis, MO
- Healthy Family Home Care, LLCHome health agency · Ellisville, MO
- St Luke's Home Health ServicesHome health agency · Chesterfield, MO
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$2,474 · 153 payments from 25 companies
- 2024$2,190 · 142 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $390.96 | 25 |
| Pfizer Inc. | $276.96 | 19 |
| Glaxosmithkline, LLC. | $263.68 | 18 |
| Abbvie Inc. | $255.22 | 16 |
| Lilly USA, LLC | $209.11 | 13 |
What the 2025 payments were for
- Food and Beverage$2,474 · 153 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 185 internal medicine physicians in Chesterfield · All internal medicine physicians in Missouri