Dr. Karen R. Garnaas, MD

Dr. Garnaas practices at Mercy Medical Center Redding in Redding, California, part of CommonSpirit Health.

Dr. Garnaas' NPI, 1124046776, was assigned on July 18, 2006. Dr. Garnaas graduated from Mayo Clinic Alix School of Medicine - Rochester in 1990. Dr. Garnaas' California license number on file is G156702.

Dr. Garnaas' primary practice is Mercy Medical Center Redding, at 2175 Rosaline Ave, Clairmont Hgts, Redding, CA 96001 in Shasta County. The practice phone is (530) 225-6102.

Dr. Garnaas' primary practice is Mercy Medical Center Redding in Redding, California, part of CommonSpirit Health. Dr. Garnaas is also affiliated with Vibra Hospital of Northern California. The medical group on file is Catalyst Neuromedical Center. Dmand AI also links Dr. Garnaas to 4 more hospitals, 3 medical groups and 2 group practices and clinics, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Garnaas practices, 8 sites in all. Vendor and product names are available with a free account.

Neurology is Dr. Garnaas' primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Garnaas is board certified in neurology by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Garnaas' licenses on file in 5 states: California, South Dakota, Iowa, North Dakota and Minnesota.

Dmand AI lists acute mini-stroke (TIA), alzheimer's disease, carpal tunnel syndrome, cerebrovascular disease, encephalopathy, epilepsy, essential tremor and fibromyalgia and chronic pain among the conditions Dr. Garnaas treats.

CMS data shows 67,160 Medicare services from Dr. Garnaas across 37 procedure codes in 2024, for 1,918 Medicare patients. Medicare paid $1,032,489 for them. Every service was in an office.

CMS counts 1,918 Medicare patients who saw Dr. Garnaas in 2024. The largest group is 65 to 74, with 772 patients. 74% of them have high cholesterol, and 69% have high blood pressure. 31% are also on Medicaid. Their average risk score is 1.30, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Garnaas' median patient age at 71, with 53% women.

In 2024, Dr. Garnaas wrote 3,021 Medicare Part D claims for 577 patients. 87% of them were for generic drugs. CMS names the drug for 2,678 of them, across 44 drugs with 11 or more claims each, at $2,783,311 in total drug cost. In 2023, CMS named 2,381 claims across 43 drugs.

Dr. Garnaas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 16 procedures of skin biopsy by Dr. Garnaas, more than 62% of the clinicians it reports for that procedure.

Dmand AI links 2 papers to Dr. Garnaas. Dr. Garnaas' most frequent co-author is Anthony J. Windebank, MD.

Dmand AI links Dr. Garnaas to 1 clinical trial. Conditions studied include Amyotrophic Lateral Sclerosis and TDP-43 Proteinopathies.

CMS Open Payments shows 630 general payments to Dr. Garnaas from 59 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 53% of the total. Alexion Pharmaceuticals, Inc. paid the most, $13,129.

Dmand AI lists 2 awards for Dr. Garnaas, most recently Regional Top Doctor in 2014.

Dr. Garnaas graduated from Mayo Clinic Alix School of Medicine - Rochester in 1990.

Dr. Garnaas is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.