Karen R. Garnaas, MD
NPI 1124046776ActiveIndividual· Psychiatry & Neurology, Neurology· Redding, CA
Psychiatry & Neurology, Neurology (MD) with Redding Rancheria and 1 other group, practicing in Redding, California. Their prescriptions cost Medicare Part D more than their services did: $3,239,911 for 3,021 claims, against $1,048,910 paid for services in 2024. Alexion Pharmaceuticals, Inc. was the largest of 32 companies reporting payments in 2025, $4,968 in all, mostly food and beverage. Lists Enloe Health and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1124046776 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 18, 2006 |
| Last updated in NPPES | Mar 31, 2025 |
| Certified by provider | Mar 31, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | G156702 | CA |
| Psychiatry & Neurology, Neurology | 2084N0400X | 37357 | MN |
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 - Neurology (CA); Practitioner - Neurology (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,918 |
|---|---|
| Services billed | 67,385 across 67 procedure codes |
| Paid by Medicare | $1,048,910 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,021 · 4,400 30-day fills |
|---|---|
| Patients | 577 |
| Total drug cost | $3,239,911 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Neurology |
Medical groups
- Redding RancheriaRedding, CA · 32 clinicians
- Catalyst Neuromedical Center PCRedding, CA · 4 clinicians
Hospital affiliations
- Enloe HealthChico, CA
- Mercy Medical Center of Mt ShastaMount Shasta, CA
- Mercy Medical Center ReddingRedding, CA
- Oroville HospitalOroville, CA
- St Elizabeth Community HospitalRed Bluff, CA
Other facilities
- Vibra Hospital of Northern CaliforniaLong-term care hospital · Redding, CA
Industry payments (Open Payments)
- 2025$4,968 · 112 payments from 32 companies
- 2024$13,337 · 147 payments from 42 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $2,517 | 9 |
| Abbvie Inc. | $294.15 | 19 |
| Ucb, Inc. | $288.36 | 11 |
| Neurocrine Biosciences, Inc. | $173.11 | 5 |
| Takeda Pharmaceuticals U.S.A., Inc. | $155.32 | 6 |
What the 2025 payments were for
- Food and Beverage$2,736 · 109 payments
- Consulting Fee$2,205 · 1 payment
- Education$26.71 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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