Caroline E. Merritt-Schiermeyer, DO
NPI 1598971277ActiveIndividual· Internal Medicine· Midwest City, OK
Internal Medicine (DO) in Midwest City, Oklahoma, licensed in OK, with an NPI issued in May 2007. 82 Medicare patients in 2024, $58,266 paid; nearly all of their 156 Part D prescriptions were generic (99%). Organogenesis Inc. was the largest of 11 companies reporting payments in 2025, $1,366 in all, mostly food and beverage. Lists Oklahoma Heart Hospital, LLC and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1598971277 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 16, 2007 |
| Last updated in NPPES | Jun 20, 2025 |
| Certified by provider | Jun 20, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4213 | OK |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 82 |
|---|---|
| Services billed | 1,320 across 20 procedure codes |
| Paid by Medicare | $58,266 |
Part D prescriptions in 2024
| Prescriptions (claims) | 156 · 178 30-day fills |
|---|---|
| Patients | 66 |
| Total drug cost | $3,671 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Oklahoma Heart Hospital, LLCOklahoma City, OK
- Ssm Health St Anthony Hospital - MidwestMidwest City, OK
- Ssm Health St Anthony Hospital - Oklahoma CityOklahoma City, OK
- Summit Medical Center, LLCEdmond, OK
Other facilities
- Apex Home HealthHome health agency · Oklahoma City, OK
Industry payments (Open Payments)
- 2025$1,366 · 40 payments from 11 companies
- 2024$415.43 · 14 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organogenesis Inc. | $502.51 | 13 |
| Paratek Pharmaceuticals, Inc. | $286.98 | 11 |
| Integra Lifesciences Corporation | $190.57 | 3 |
| Bsn Medical Inc | $117.22 | 4 |
| Hartmann USA, Inc. | $90.48 | 2 |
What the 2025 payments were for
- Food and Beverage$1,366 · 40 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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