CLARISSA LIEW MD
NPI 1942495494
Psychiatry & Neurology - Clinical Neurophysiology in Champaign, IL

NPI Status: Active since September 07, 2007

Contact Information

101 W UNIVERSITY AVE
CHAMPAIGN, IL
ZIP 61820
Phone: (217) 366-1266

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  • Individual
  • Female
  • Years of Experience 38
  • Psychiatry & Neurology
  • Clinical Neurophysiology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About CLARISSA LIEW

This page provides the complete NPI Profile along with additional information for Clarissa Liew, a provider established in Champaign, Illinois with a medical specialization in Psychiatry & Neurology, focusing in clinical neurophysiology and more than 38 years of experience. The healthcare provider is registered in the NPI registry with number 1942495494 assigned on September 2007. The practitioner's primary taxonomy code is 2084N0600X with license number 036144422 (IL). The provider is registered as an individual and her NPI record was last updated 4 years ago.

NPI
1942495494
Provider Name
CLARISSA LIEW MD
Gender
Female
Entity Type
Individual
Location Address
101 W UNIVERSITY AVE CHAMPAIGN, IL 61820
Location Phone
(217) 366-1266
Mailing Address
101 W UNIVERSITY AVE CHAMPAIGN, IL 61820
Mailing Phone
(217) 366-1266
Medical School Name
OTHER
Graduation Year
1988
Is Sole Proprietor?
No
Enumeration Date
09-07-2007
Last Update Date
01-06-2022
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Psychiatry & Neurology Clinical Neurophysiology

Taxonomy Code
2084N0600X
Type
Allopathic & Osteopathic Physicians
License No.
036144422
License State
IL
Taxonomy Description
Clinical Neurophysiology is a subspecialty with psychiatric or neurologic expertise in the diagnosis and management of central, peripheral, and autonomic nervous system disorders using combined clinical evaluation and electrophysiologic testing such as electroencephalography (EEG), electromyography (EMG), and nerve conduction studies (NCS).

Medicare Participation & PECOS Enrollment Status

Clarissa Liew is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Clarissa Liew is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 4082708912

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20171208000772

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Other DME (DE001N)

    Tubing with integrated heating element for use with positive airway pressure device (HCPCS:A4604)

    9 DME suppliers used 47 Medicare Claims 48 Services Paid

  • DME-Other DME (DE001N)

    Full face mask used with positive airway pressure device, each (HCPCS:A7030)

    9 DME suppliers used 45 Medicare Claims 45 Services Paid

  • DME-Other DME (DE001N)

    Face mask interface, replacement for full face mask, each (HCPCS:A7031)

    8 DME suppliers used 37 Medicare Claims 79 Services Paid

  • DME-Other DME (DE001N)

    Cushion for use on nasal mask interface, replacement only, each (HCPCS:A7032)

    5 DME suppliers used 16 Medicare Claims 52 Services Paid

  • DME-Other DME (DE001N)

    Pillow for use on nasal cannula type interface, replacement only, pair (HCPCS:A7033)

    6 DME suppliers used 14 Medicare Claims 74 Services Paid

  • DME-Other DME (DE001N)

    Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap (HCPCS:A7034)

    10 DME suppliers used 52 Medicare Claims 52 Services Paid

  • DME-Other DME (DE001N)

    Headgear used with positive airway pressure device (HCPCS:A7035)

    10 DME suppliers used 75 Medicare Claims 75 Services Paid

  • DME-Other DME (DE001N)

    Chinstrap used with positive airway pressure device (HCPCS:A7036)

    5 DME suppliers used 14 Medicare Claims 14 Services Paid

  • DME-Other DME (DE001N)

    Tubing used with positive airway pressure device (HCPCS:A7037)

    5 DME suppliers used 44 Medicare Claims 44 Services Paid

  • DME-Other DME (DE001N)

    Filter, disposable, used with positive airway pressure device (HCPCS:A7038)

    11 DME suppliers used 101 Medicare Claims 452 Services Paid

  • DME-Other DME (DE001N)

    Water chamber for humidifier, used with positive airway pressure device, replacement, each (HCPCS:A7046)

    9 DME suppliers used 22 Medicare Claims 22 Services Paid

  • DME-Other DME (DE001N)

    Humidifier, heated, used with positive airway pressure device (HCPCS:E0562)

    3 DME suppliers used 26 Medicare Claims 26 Services Paid

  • DME-Other DME (DE001N)

    Humidifier, heated, used with positive airway pressure device (HCPCS:E0562)

    9 DME suppliers used 161 Medicare Claims 168 Services Paid

  • DME-Other DME (DE001N)

    Continuous positive airway pressure (cpap) device (HCPCS:E0601)

    12 DME suppliers used 358 Medicare Claims 363 Services Paid

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Cyanocobalamin (vitamin b-12) level

A Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.

This service was performed 30 times for 26 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 26 times for 26 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 243 times for 174 patients

Established patient office or other outpatient visit, 40-54 minutes

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

This service was performed 11 times for 11 patients

Folic acid level, serum

A Folic Acid Level, Serum test measures the amount of folic acid, a type of B vitamin, in your blood. This vitamin is important for cell growth and development. It's crucial for your body to function well. If your levels are low, it may indicate a deficiency, which can lead to health issues.

This service was performed 28 times for 26 patients

Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation

A Home Sleep Test (HST) with a Type III Portable Monitor is an unattended test that records your breathing, heart rate, and oxygen levels during sleep. This test uses a minimum of 4 channels to monitor these parameters, helping to diagnose sleep disorders.

This service was performed 101 times for 101 patients

Insertion of needle into vein for collection of blood sample

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

This service was performed 44 times for 39 patients

Measurement of brain wave activity (eeg), awake and asleep

The measurement of brain wave activity, known as an EEG, records the brain's electrical signals. It's performed when you're awake and asleep to monitor your brain's functioning. It helps in diagnosing conditions like epilepsy, sleep disorders, and other neurological issues.

This service was performed 24 times for 24 patients

Measurement of brain wave activity (eeg), awake and drowsy

Measurement of brain wave activity, also known as an EEG, is a non-invasive test that records electrical patterns in your brain. This procedure is done when you're awake and drowsy to understand how your brain functions during different states of consciousness.

This service was performed 23 times for 23 patients

Needle measurement of electrical activity in arm or leg muscles, complete study

This procedure, known as an electromyography (EMG), involves inserting a small needle into your arm or leg muscles to measure their electrical activity. This complete study helps diagnose issues with nerves or muscles, providing valuable data for your treatment plan.

This service was performed 21 times for 20 patients

Nerve conduction, 7-8 studies

Nerve conduction studies involve testing the speed and strength of signals traveling through your nerves. This helps doctors identify nerve damage. In a 7-8 study procedure, 7-8 specific nerves are tested. You may feel a mild, brief tingling or shock during the test.

This service was performed 13 times for 12 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 110 times for 110 patients

Sleep study in sleep lab (6 years or older)

A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.

This service was performed 67 times for 65 patients

Sleep study in sleep lab with continuous airway pressure (6 years or older)

A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.

This service was performed 34 times for 28 patients

Sleep study including heart rate, breathing, airflow, and effort

A sleep study monitors your heart rate, breathing patterns, airflow, and physical effort while you sleep. It helps identify sleep disorders by tracking your sleep stages and cycles. This data aids doctors in diagnosing and treating sleep-related issues.

This service was performed 107 times for 103 patients

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1942495494, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
4
Doubled → 8
Pos 4
2
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
4
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
4
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 4 → 8 4 → 8 5 → 10 → 1 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 9 + 8 + 2 + 8 + 9 + 1 + 0 + 4 + 1 + 8 + 24 = 76

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1942495494.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Physical Therapist
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Physical Therapist
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Specialist
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Physician Assistant
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Specialist/Technologist (Athletic Trainer)
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Physical Medicine & Rehabilitation
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Urology
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Internal Medicine (Pulmonary Disease)
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Physician Assistant
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Radiology (Diagnostic Radiology)
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Internal Medicine (Cardiovascular Disease)
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Specialist
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Physical Therapist
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Physical Therapy Assistant
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Pharmacy (Community/Retail Pharmacy)
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Audiologist
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Developmental Therapist
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Physician Assistant
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Clinic/Center (Ambulatory Surgical)
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820
Clinical Medical Laboratory
101 W UNIVERSITY AVE
CHAMPAIGN, IL 61820

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1942495494, enumerated as an "individual" on September 07, 2007.

The provider is located at 101 W UNIVERSITY AVE CHAMPAIGN, IL 61820 and the phone number is (217) 366-1266.

Psychiatry & Neurology with taxonomy code 2084N0600X and a focus in Clinical Neurophysiology.