Ruth M. Diamond, FNP-BC
NPI 1013255975ActiveIndividual· Nurse Practitioner, Family· Chicago, IL
Nurse Practitioner, Family (FNP-BC) with City of Hope Medical Group of Illinois PLLC, practicing in Chicago, Illinois. Their prescriptions cost Medicare Part D more than their services did: $50,528 for 380 claims, against $21,794 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 6 companies reporting payments in 2025, $193.30 in all, mostly food and beverage. Lists Midwestern Region Med Center, Inc as a hospital affiliation.
Overview
| NPI | 1013255975 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP-BC |
| Sole proprietor | No |
| NPI issued | Jan 27, 2013 |
| Last updated in NPPES | Jan 10, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 209.010098 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 208 |
|---|---|
| Services billed | 358 across 5 procedure codes |
| Paid by Medicare | $21,794 |
Part D prescriptions in 2024
| Prescriptions (claims) | 380 · 815 30-day fills |
|---|---|
| Patients | 95 |
| Total drug cost | $50,528 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- City of Hope Medical Group of Illinois PLLCZion, IL · 129 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$193.30 · 8 payments from 6 companies
- 2024$1,411 · 47 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $50.33 | 2 |
| Gilead Sciences, Inc. | $44.35 | 2 |
| Astrazeneca Pharmaceuticals LP | $30.45 | 1 |
| Springworks Therapeutics, Inc. | $27.38 | 1 |
| Novartis Pharmaceuticals Corporation | $21.50 | 1 |
What the 2025 payments were for
- Food and Beverage$193.30 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Nurse Practitioner, Family providers in Chicago
- 1922870872
- 1811343072
- 1376389155
- 1548042716
- 1003552647
- 1023980984
- 1710575279
- 1386531507
- 1417847773
- 1902457450
- 1083510986
- 1821777061