Karen Frei is a Neurology physician affiliated with Loma Linda University. OpenAlex indexes 79 publications with 2,717 citations (h-index 23).
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
11370 Anderson St # B-100
Loma Linda, CA 92354
Telephone
909-588-2880Registry record last updated 26 Jun 2018.
Industry payments
13 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Medtronic, Inc.Program year20255 payments
- Merz Pharmaceuticals, LLCProgram year20251 payment
- Boston Scientific CorporationProgram year20251 payment
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Medicare prescribing footprint (2024)
The drugs this prescriber writes for Medicare patients, grouped by drug class and therapeutic area. Every percentage is a share of their total prescribing, so you can see what they prescribe most. These are proportions, not patient counts or dollar amounts. No condition is inferred: the claims record what was prescribed, never why.
Musculoskeletal
71%Neuromuscular Blocker70.8%Incobotulinumtoxin a100%Part B, office-administered≥16 patientsgamma-Aminobutyric Acid-ergic Agonist0.2%Baclofen100%Part D<11 patientsNervous system
26.4%Aromatic Amino Acid Decarboxylation Inhibitor8.3%Carbidopa-Levodopa72%Carbidopa-Levodopa Er14%Rytary14%Part D≥132 patientsOther antiepileptics2.7%Levetiracetam69%Topiramate31%Part D≥45 patients+ 16 more classes in this area
Cardiovascular
2.5%Beta blocker2.1%Propranolol Hcl86%Propranolol Hcl Er14%Part D<11 patientsCentral alpha-2 Adrenergic Agonist0.3%Clonidine Hcl100%Part D<11 patients
Drug classes come from the WHO ATC and U.S. National Library of Medicine (RxClass) classifications; prescribing counts come from the CMS Medicare Part D Prescribers file. Each drug is counted once, under its primary class. Medicare fee-for-service only, so no Medicare Advantage, commercial, or pediatric prescribing is included. CMS publishes this data about 17 months after the fact.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
Similar KOLs
Other experts from the same institution or the same specialty.
Gary Fraser, MD
Loma Linda University
Richard Robison, MD
Loma Linda University
Howard Gimbel, MD
Loma Linda University
Edmund Ko, MD
Loma Linda University
Bruce Miller, MD
University of California, San Francisco (UCSF)
Bradley Boeve, MD
Mayo Clinic
Richard Lipton, MD
Albert Einstein College of Medicine
Steven Dekosky, MD
University of Florida
A basic profile from our physician directory: identity and practice contact from the federal NPPES registry, research from OpenAlex, trials from ClinicalTrials.gov, payments from CMS Open Payments, shown itemized where we have matched records, as a count where we only have a total. This person hasn't been through our full identity-adjudication pipeline yet, so funding, congress activity and public presence aren't shown. Absence of a section means “not yet looked,” never “none found.”