Rebecca S. Hammes, ARNP
NPI 1679956379ActiveIndividual· Nurse Practitioner, Women's Health· Cedar Rapids, IA
Nurse Practitioner, Women's Health (ARNP) with OB-GYN Associates PC, practicing in Cedar Rapids, Iowa. 101 Medicare patients in 2024, $10,741 paid; nearly all of their 166 Part D prescriptions were generic (90%). Sumitomo Pharma America, Inc. was the largest of 2 companies reporting payments in 2025, $40.66 in all, mostly food and beverage.
Overview
| NPI | 1679956379 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ARNP |
| Sole proprietor | No |
| NPI issued | Jun 30, 2015 |
| Last updated in NPPES | Jun 25, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Women's Health Primary | 363LW0102X | F148815 | IA |
| Nurse Practitioner, Women's Health | 363LW0102X | 209.012729 | IL |
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 - Nurse Practitioner (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 101 |
|---|---|
| Services billed | 243 across 25 procedure codes |
| Paid by Medicare | $10,741 |
Part D prescriptions in 2024
| Prescriptions (claims) | 166 · 293 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $11,759 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- OB-GYN Associates PCCedar Rapids, IA · 17 clinicians
Industry payments (Open Payments)
- 2025$40.66 · 2 payments from 2 companies
- 2024$14.22 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $23.69 | 1 |
| Hologic Sales and Service, LLC | $16.97 | 1 |
What the 2025 payments were for
- Food and Beverage$40.66 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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