27 Years of Experience
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Frei, Neurologist in Rancho Cucamonga, CA?
Dr. Karen Frei, MD is a Neurologist, who primarily practices in Rancho Cucamonga, CA with 1 additional practice location. She has been practicing for over 27 years. Dr. Frei is fluent in English and Spanish, and is currently seeing new patients. Dr. Frei’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Frei’s office at (909) 588-2880.
Where did Dr. Frei go to medical school and complete their residency?
Medical School: Thomas Jefferson University Jefferson Medical College | Jefferson Medical College of Thomas Jefferson University
What languages does Dr. Frei speak?
Dr. Frei and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Neurologist like Dr. Frei typically treat?
As a Neurologist, Dr. Frei diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Frei. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.
Also known as:
- Parkinson's Disease without Involuntary Movements
- Parkinson's Disease
- Parkinsonism
- Parkinson's Disease with Dyskinesia and Fluctuations
- Early Parkinson's
- Non-dyskinetic Parkinsonism
- Stable Parkinson's Disease
- PD
- Shaking Palsy
- Paralysis Agitans
- Parkinson's Syndrome
- Atypical Parkinsonism
- Secondary Parkinsonism
- Parkinson's with Variable Movements
- PD with Fluctuating Dyskinesia
- On-Off Parkinson's
ICD-10 Codes:
- G20A1: Parkinson's disease without dyskinesia, without mention of fluctuations
- G20: Parkinson's disease
- G20C: Parkinsonism, unspecified
- G20B2: Parkinson's disease with dyskinesia, with fluctuations
Also known as:
- Essential Tremor
- Other Tremor Disorder
- Tremor
- Essential tremor
- Familial Tremor
- Benign Essential Tremor
- Atypical Tremor
- Unusual Tremor
ICD-10 Codes:
- G250: Essential tremor
- G252: Other specified forms of tremor
Also known as:
- Spasmodic Torticollis
- Dystonia
- Cervical Dystonia
- Wry Neck
ICD-10 Codes:
- G243: Spasmodic torticollis
What procedures does a Neurologist like Dr. Frei typically perform?
As a Neurologist, Dr. Frei performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Frei. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.
Also known as:
- Facial Muscle Injection for Spasms (One Side)
- Botox for facial spasms
- Facial nerve chemodenervation
- Blepharospasm treatment
- Hemifacial spasm injection
CPT Codes:
- 64612: Chemodenervation of muscle(s); muscle(s) innervated by facial nerve, unilateral (eg, for blepharospasm, hemifacial spasm)
Also known as:
- Botox Injection for Neck Muscle Spasms
- Chemodenervation of neck muscles
- Botulinum toxin injection for cervical dystonia
- Neck spasm injection
CPT Codes:
- 64616: Chemodenervation of muscle(s); neck muscle(s), excluding muscles of the larynx, unilateral (eg, for cervical dystonia, spasmodic torticollis)
Also known as:
- Botox Injections for Chronic Migraine
- Chemodenervation for Migraine
- Botulinum Toxin Injection for Migraine
- Facial Nerve Block
- Trigeminal Nerve Block
CPT Codes:
- 64615: Chemodenervation of muscle(s); muscle(s) innervated by facial, trigeminal, cervical spinal and accessory nerves, bilateral (eg, for chronic migraine)
Also known as:
- Muscle Weakening Injection (Arm or Leg)
- Extremity Chemodenervation
- Spasticity Injection
- Botulinum Toxin Injection for Muscles
- Muscle Denervation
CPT Codes:
- 64642: Chemodenervation of one extremity; 1-4 muscle(s)
Also known as:
- Chemical Nerve Block for Multiple Muscles (Arm/Leg)
- Extremity Chemodenervation
- Muscle Spasticity Treatment (Chemical)
- Botox for Muscle Spasms (Multiple Muscles)
CPT Codes:
- 64644: Chemodenervation of one extremity; 5 or more muscles
Also known as:
- Salivary Gland Nerve Treatment (Bilateral)
- Botox for Salivary Glands
- Chemodenervation of Salivary Glands
- Parotid Gland Nerve Block
- Submandibular Gland Nerve Treatment
CPT Codes:
- 64611: Chemodenervation of parotid and submandibular salivary glands, bilateral
Also known as:
- Chemical Nerve Block for Muscle Spasms (Additional Extremity)
- Chemodenervation of Extremity Muscles
- Botox for Muscle Spasms (Additional Limb)
- Nerve-Blocking Injection for Spasticity
CPT Codes:
- 64645: Chemodenervation of one extremity; each additional extremity, 5 or more muscles (List separately in addition to code for primary procedure)
Does Dr. Frei accept my insurance?
Dr. Frei accepts most major insurance plans. Important: Please call our office at (909) 588-2880 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Frei accept in Rancho Cucamonga, CA?
Dr. Frei in Rancho Cucamonga, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Shield of California
Elevance Health Inc. (formerly Anthem)
Federal government of the United States
Inland Empire
Inland Empire Health Plan
Medicare
Other Health Care Provider
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Frei's office located?
Dr. Karen Frei's Primary Practice
8599 Haven Ave Ste 102
Rancho Cucamonga, CA 91730
(909) 588-2880
What is Dr. Frei's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Frei's National Provider Identifier (NPI) number is 1902836141.
What common questions do patients ask about Dr. Frei?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Frei
What is Dr. Karen Frei's specialty?
Dr. Frei is a Neurologist near Rancho Cucamonga, CA.
What does a Neurologist do?
A neuropathologist is expert in the diagnosis of diseases of the nervous system and skeletal muscles and functions as a consultant primarily to neurologists and neurosurgeons. The neuropathologist is knowledgeable in the infirmities of humans as they affect the nervous and neuromuscular systems, be they degenerative, infectious, metabolic, immunologic, neoplastic, vascular or physical in nature.
Is this Dr. Karen Frei affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Frei is affiliated with Eisenhower Health Main Campus, Casa Colina Hospital And Centers For Healthcare, Redlands Community Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Neurologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Neurologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Karen Frei accepting new patients in Rancho Cucamonga, CA?
Yes, Dr. Karen Frei is accepting new patients at this time.
Does Dr. Karen Frei offer online booking?
Please contact Dr. Frei's office at (909) 588-2880 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Karen Frei?
Please contact Dr. Frei's office at (909) 588-2880 for information regarding telehealth appointment availability or for scheduling assistance.
<section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>