Karen R. Garnaas, MD
Neurology Physician · Redding, CA
Karen R. Garnaas, MD is a neurology physician with a practice address in Redding, California, and NPI 1124046776, issued on Jul 18, 2006. Check the license (California G156702, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen R. Garnaas
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- G156702 CA
37357 MN
Self-reported in NPPES; status is on the state search - Practice location
- 2420 Sonoma St, Redding, CA 96001
- Phone
- (530) 999-2533
- Enumerated
- Jul 18, 2006
- Record last updated
- Mar 31, 2025
- Fax
- (530) 999-2532
- Medicare enrollment
- Enrolled (PECOS I20200116002453); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 2420 Sonoma St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Faith Clause, FNPNurse Practitioner1093250862
- Maria Servioli Verde, M.DNeurology Physician1205169109
Verify Karen R. Garnaas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G156702Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average neurology physician in 2024
3,021 Medicare Part D claims for 577 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Duloxetine Hcl661 claims
- Gabapentin219 claims
- Donepezil Hcl187 claims
- Pregabalin133 claims
- Carbidopa-Levodopa112 claims
- Nortriptyline Hcl111 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $13,314.03
146 payments; by number, the most common kind was food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Catalyst Neuromedical Center PCRedding, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen R. Garnaas among 2,339 neurology physician records in California
Karen R. Garnaas, MD is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1990 · median 2006 among the 1,628 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in Redding → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Okkes KuybuRedding, CA 960011336502707
- Aldo Mendez Ruiz, M.D.Redding, CA 960011881042968
- Michael Obrien, M.D.Redding, CA 960011952382228
- Gary Rowe, MDRedding, CA 960011417960675
- Maria Servioli Verde, M.DRedding, CA 960011205169109
- William Hope, M.D.Yuba City, CA 959911770504383
- Jeffrey Phillips, MDYuba City, CA 959911841362647
- Thomas McKnight, D.O. MPHChico, CA 959731679578538
Common questions
What is Karen R. Garnaas, MD's NPI number?
Karen R. Garnaas, MD's National Provider Identifier (NPI) is 1124046776, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen R. Garnaas, MD located?
The NPPES record lists a practice address at 2420 Sonoma St, Redding, CA, 96001. Phone: (530) 999-2533. Providers update this record themselves, so call before visiting.
How can I verify Karen R. Garnaas, MD's license?
NPPES lists California license number G156702, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen R. Garnaas, MD prescribe under Medicare Part D?
In 2024, Karen R. Garnaas, MD had 3,021 Medicare Part D claims for 577 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.