Ruth Zisle Feldman, PA-C
NPI 1255930624ActiveIndividual· Physician Assistant· Columbia, MD
Physician Assistant (PA-C) with Joshi and Merchant, Md,pa, practicing in Columbia, Maryland. Their prescriptions cost Medicare Part D more than their services did: $235,600 for 3,385 claims, against $45,722 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $2,055 in all, mostly food and beverage.
Overview
| NPI | 1255930624 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Oct 18, 2020 |
| Last updated in NPPES | Jul 13, 2025 |
| Certified by provider | Jul 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | C0008265 | MD |
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 - Physician Assistant (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 166 |
|---|---|
| Services billed | 741 across 4 procedure codes |
| Paid by Medicare | $45,722 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,385 · 5,109 30-day fills |
|---|---|
| Patients | 192 |
| Total drug cost | $235,600 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Joshi and Merchant, Md,paColumbia, MD · 9 clinicians
Industry payments (Open Payments)
- 2025$2,055 · 98 payments from 15 companies
- 2024$2,153 · 128 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $404.07 | 19 |
| Lundbeck LLC | $341.14 | 20 |
| Axsome Therapeutics, Inc. | $306.37 | 13 |
| Neurocrine Biosciences, Inc. | $224.05 | 8 |
| Alkermes, Inc. | $220.83 | 12 |
What the 2025 payments were for
- Food and Beverage$2,055 · 98 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Columbia
- 1053698266
- 1235638115
- 1265771109
- 1306855473
- 1316609548
- 1336928845
- 1396238499
- 1538769955
- 1639474927
- 1669440210
- 1669709853
- 1770869596
All 74 physician assistants in Columbia · All physician assistants in Maryland