Linda Ann Zacharias, MD
NPI 1861535908ActiveIndividual· Internal Medicine, Rheumatology· Edmond, OK
Internal Medicine, Rheumatology (MD) with Oklahoma Arthritis Center, P.C., practicing in Edmond, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $1,679,401 for 2,469 claims, against $85,925 paid for services in 2024. United Therapeutics Corporation was the largest of 7 companies reporting payments in 2025, $255.51 in all, mostly food and beverage. Lists Integris Health Edmond Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1861535908 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 15, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 24152 | OK |
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 - Rheumatology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 266 |
|---|---|
| Services billed | 3,093 across 61 procedure codes |
| Paid by Medicare | $85,925 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,469 · 4,340 30-day fills |
|---|---|
| Patients | 259 |
| Total drug cost | $1,679,401 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Rheumatology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Oklahoma Arthritis Center, P.C.Edmond, OK · 45 clinicians
Hospital affiliations
- Integris Health Edmond HospitalEdmond, OK
- Mercy Hospital Oklahoma City, IncOklahoma City, OK
- Norman RegionalNorman, OK
- O U Medical CenterOklahoma City, OK
Industry payments (Open Payments)
- 2025$255.51 · 8 payments from 7 companies
- 2024$129.06 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| United Therapeutics Corporation | $122.19 | 1 |
| Amgen Inc. | $33.84 | 2 |
| Ucb, Inc. | $29.04 | 1 |
| Abbvie Inc. | $23.64 | 1 |
| Glaxosmithkline, LLC. | $17.89 | 1 |
What the 2025 payments were for
- Food and Beverage$255.51 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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