Mark Cieniawski, M.D.
NPI 1205870607ActiveIndividual· Internal Medicine· Portland, ME
Internal Medicine (M.D.) in Portland, Maine, trained at Northwestern University Feinberg Medical School (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $1,876,257 for 14,295 claims, against $1,173 paid for services in 2024.
Overview
| NPI | 1205870607 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 15, 2006 |
| Last updated in NPPES | Sep 4, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 013544 | ME |
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 (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 21 |
|---|---|
| Services billed | 27 across 4 procedure codes |
| Paid by Medicare | $1,173 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,295 · 29,702 30-day fills |
|---|---|
| Patients | 721 |
| Total drug cost | $1,876,257 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
Medical group
- Northern Maine Medical CenterFort Kent, ME · 38 clinicians
Hospital affiliations
- Cary Medical CenterCaribou, ME
- Northern Light A R Gould HospitalPresque Isle, ME
- Northern Maine Medical CenterFort Kent, ME
Other facilities
- Northern Light Home Care & HospiceHome health agency · So Portland, ME
- Valley Home Health ServicesHome health agency · Caribou, ME
- Northern Light Home Care & HospiceHospice · South Portland, ME
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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