Vladimir Alexandrovich Grebennikov, M.D.
NPI 1952399313ActiveIndividual· Internal Medicine· Richardson, TX
Internal Medicine (M.D.) with Legacy Healthcare Services Inc, practicing in Richardson, Texas. Their prescriptions cost Medicare Part D more than their services did: $2,560,367 for 18,570 claims, against $187,053 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 16 companies reporting payments in 2025, $1,220 in all, mostly food and beverage. Lists Medical City Plano as a hospital affiliation.
Overview
| NPI | 1952399313 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 11, 2005 |
| Last updated in NPPES | Jul 25, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | K9291 | TX |
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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 358 |
|---|---|
| Services billed | 5,234 across 99 procedure codes |
| Paid by Medicare | $187,053 |
Part D prescriptions in 2024
| Prescriptions (claims) | 18,570 · 41,414 30-day fills |
|---|---|
| Patients | 764 |
| Total drug cost | $2,560,367 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Legacy Healthcare Services IncGreenville, SC · 3,223 clinicians
Hospital affiliation
- Medical City PlanoPlano, TX
Other facilities
- Veritas Home HealthHome health agency · Plano, TX
Industry payments (Open Payments)
- 2025$1,220 · 42 payments from 16 companies
- 2024$1,131 · 46 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $410.28 | 16 |
| Vivus LLC | $152.14 | 3 |
| Kowa Pharmaceuticals America, Inc. | $117.19 | 1 |
| Novo Nordisk Inc | $107.90 | 1 |
| Aimmune Therapeutics, Inc. | $80.43 | 4 |
What the 2025 payments were for
- Food and Beverage$1,220 · 42 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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