Vahagn Zakaryan, M.D.
NPI 1245597038ActiveIndividual· Internal Medicine, Nephrology· Grove City, OH
Internal Medicine, Nephrology (M.D.) with Columbus Nephrology, Inc., practicing in Grove City, Ohio. Their prescriptions cost Medicare Part D more than their services did: $518,326 for 2,120 claims, against $102,133 paid for services in 2024. Amgen Inc. was the largest of 7 companies reporting payments in 2025, $306.39 in all, mostly food and beverage. Lists Grant Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1245597038 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 18, 2012 |
| Last updated in NPPES | Mar 12, 2020 |
| Certified by provider | Mar 12, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 35.125699 | OH |
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 - Nephrology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 351 |
|---|---|
| Services billed | 1,231 across 24 procedure codes |
| Paid by Medicare | $102,133 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,120 · 5,267 30-day fills |
|---|---|
| Patients | 337 |
| Total drug cost | $518,326 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Columbus Nephrology, Inc.Grove City, OH · 12 clinicians
Hospital affiliations
- Grant Medical CenterColumbus, OH
- Mount Carmel East & WestColumbus, OH
- Mount Carmel St Ann'sWesterville, OH
Other facilities
- Fmc Dialysis Services of LondonDialysis facility · London, OH
- Fmc Nxstage Kidney Care/Nxstage Columbus LLCDialysis facility · Dublin, OH
- Fmc PickeringtonDialysis facility · Pickerington, OH
Industry payments (Open Payments)
- 2025$306.39 · 13 payments from 7 companies
- 2024$204.69 · 9 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $147.23 | 3 |
| Becton, Dickinson and Company | $60.86 | 1 |
| Novo Nordisk Inc | $31.99 | 1 |
| Akebia Therapeutics Inc | $24.16 | 1 |
| Calliditas Therapeutics US Inc. | $20.80 | 1 |
What the 2025 payments were for
- Food and Beverage$299.38 · 8 payments
- Education$7.01 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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