Michael C. Treisman, MD
NPI 1184685455ActiveIndividual· Internal Medicine· Florissant, MO
Internal Medicine (MD) with Mercy Clinic East Communities and 1 other group, practicing in Florissant, Missouri. Their prescriptions cost Medicare Part D more than their services did: $1,386,532 for 15,087 claims, against $91,742 paid for services in 2024. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $760.22 in all, mostly food and beverage. Lists Christian Hospital Northeast and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1184685455 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 28, 2006 |
| Last updated in NPPES | Apr 2, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 105350 | 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 | 380 |
|---|---|
| Services billed | 1,262 across 32 procedure codes |
| Paid by Medicare | $91,742 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,087 · 32,109 30-day fills |
|---|---|
| Patients | 1,279 |
| Total drug cost | $1,386,532 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Mercy Clinic East CommunitiesSaint Louis, MO · 571 clinicians
- Aging Well Health Care, LLCSaint Louis, MO · 238 clinicians
Hospital affiliations
- Christian Hospital NortheastSaint Louis, MO
- Mercy Hospital SouthSaint Louis, MO
- Mercy Hospital St LouisSaint Louis, MO
- Mercy Hospital WashingtonWashington, MO
- St Lukes HospitalChesterfield, MO
Other facilities
- Mercy Home HealthHome health agency · Saint Louis, MO
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$760.22 · 52 payments from 13 companies
- 2024$696.07 · 45 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $219.51 | 14 |
| Astrazeneca Pharmaceuticals LP | $143.28 | 16 |
| Glaxosmithkline, LLC. | $88.05 | 5 |
| Lilly USA, LLC | $58.37 | 3 |
| Novo Nordisk Inc | $55.66 | 3 |
What the 2025 payments were for
- Food and Beverage$760.22 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Florissant · All internal medicine physicians in Missouri