Cassandra Michelle Niemi, MD
NPI 1861781767ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· Portland, OR
Obstetrics & Gynecology, Gynecologic Oncology (MD) with Providence Health and Services Oregon and 1 other group, practicing in Portland, Oregon. Their prescriptions cost Medicare Part D more than their services did: $198,885 for 200 claims, against $29,256 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 2 companies reporting payments in 2024, $375.63 in all, mostly food and beverage. Lists Providence Portland Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1861781767 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 31, 2011 |
| Last updated in NPPES | Mar 22, 2021 |
| Certified by provider | Mar 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | MD186977 | OR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (OR); Practitioner - Gynecological Oncology (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 72 |
|---|---|
| Services billed | 313 across 33 procedure codes |
| Paid by Medicare | $29,256 |
Part D prescriptions in 2024
| Prescriptions (claims) | 200 · 255 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $198,885 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Medical groups
- Providence Health and Services OregonPortland, OR · 1,433 clinicians
- Providence Health and Services - OregonPortland, OR · 191 clinicians
Hospital affiliations
- Providence Portland Medical CenterPortland, OR
- Providence St Vincent Medical CenterPortland, OR
- Providence Willamette Falls Medical CenterOregon City, OR
Industry payments (Open Payments)
- 2024$375.63 · 4 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $241.45 | 2 |
| Astrazeneca Pharmaceuticals LP | $134.18 | 2 |
What the 2024 payments were for
- Food and Beverage$375.63 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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