Dominance, CerebralEpilepsy, Temporal LobeFluorodeoxyglucose F18
Dr. Clarissa Liew, MD
NPI1942495494PAC ID4082708912
- Medicare services, 2024
- 1,120
- Medicare patients, 2024
- 466
- Part D claims, 2024
- 1,763
- Publications
- 2
- Industry payments
- $10,713
- Practice address
- 101 W University Ave, Champaign, IL 61820
- Practice phone
- Call (217) 366-1270
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Christie Clinic Amblatory Surgery Center
Surgery Center - Not Medicare-Certified · Champaign, Illinois
Find Dr. Liew's professional email, personal email and mobile number
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Dr. Clarissa Liew is a clinical neurophysiologist in Champaign, Illinois
Dr. Liew practices at Christie Clinic Amblatory Surgery Center in Champaign, Illinois.
Dr. Liew's NPI, 1942495494, was assigned on September 7, 2007. Dr. Liew holds Illinois license 036144422.
NPI and contact details
- NPI
- 1942495494NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082708912
- NPI enumeration date
- September 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (217) 366-1270
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Clarissa Liew practices at Christie Clinic Amblatory Surgery Center in Champaign, Illinois
Dr. Liew's primary practice is Christie Clinic Amblatory Surgery Center, at 101 W University Ave, Champaign, IL 61820. The practice phone is (217) 366-1270.
- Christie Clinic Amblatory Surgery Center101 W University Ave, Champaign, IL 61820Phone(217) 366-1270
Source: Dmand AI Affiliation Data
Dr. Clarissa Liew is affiliated with 4 sites of care and 3 medical groups
Dr. Liew's primary practice is Christie Clinic Amblatory Surgery Center in Champaign, Illinois. The medical group on file is Christie Clinic. Dmand AI also links Dr. Liew to 2 more group practices and clinics, 2 medical groups and 1 breast imaging center, each named with a free account. Dr. Liew's employer is on file too: a surgery center (asc).
Christie Clinic Amblatory Surgery CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Clarissa Liew's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Liew practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Christie Clinic Amblatory Surgery Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Clarissa Liew is one of 29 clinical neurophysiologists in Illinois
Clinical neurophysiology is Dr. Liew's primary specialty in the NPI Registry, under taxonomy code 2084N0600X. Dr. Liew is licensed in Illinois.
Specialties and state licenses
- Clinical neurophysiology, IllinoisPrimary
Clinical neurophysiologists near Dr. Liew
Counts of clinical neurophysiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Clarissa Liew billed Medicare for 1,120 services in 2024
CMS data shows 1,120 Medicare services from Dr. Liew across 15 procedure codes in 2024, for 466 Medicare patients. Medicare paid $101,184 for them. Every service was in an office.
Medicare services, 20241,120
Medicare patients466
Paid by Medicare$101,184
Procedure codes15
Dr. Liew's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1292024: 426230%
- Tests and treatments
- 2023: 3262024: 3291%
- Office and hospital visits
- 2023: 3112024: 310No change
- Lab and pathology
- 2023: 02024: 34
- Surgery
- 2023: 202024: 215%
Dr. Liew compared with the Illinois median for clinical neurophysiologists, 2024
- Dr. Liew
- Illinois median
- Medicare services
- 1,120vs 58392% above
- Medicare patients
- 466vs 35033% above
- Part D claims
- 1,537vs 6702.3 times
Medians across 29 clinical neurophysiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Liew's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Liew and other clinical neurophysiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Clarissa Liew treated 466 Medicare patients in 2024, average age 72
CMS counts 466 Medicare patients who saw Dr. Liew in 2024. The largest group is 65 to 74, with 239 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Liew's median patient age at 59, with 45% women.
Medicare patients, 2024466
Average age72
Average risk score1.11
Also on Medicaid10%
Dr. Liew's Medicare patients by age, 2024
Dr. Liew's Medicare patients by sex, 2024
- Women26757%
- Men19943%
Chronic conditions among Dr. Liew's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Ischemic heart disease32%
- Anxiety30%
- Diabetes29%
- Mood disorders29%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Liew's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Clarissa Liew wrote 1,763 Medicare Part D claims in 2024
In 2024, Dr. Liew wrote 1,763 Medicare Part D claims for 309 patients. 94% of them were for generic drugs. CMS names the drug for 1,537 of them, across 36 drugs with 11 or more claims each, at $256,401 in total drug cost. In 2023, CMS named 1,640 claims across 37 drugs.
Part D claims, 20241,763
Drugs named by CMS36
Total drug cost$256,401
Part D patients309
Dr. Liew's Part D claims by kind of drug, 2024
- Generic1,656 claims94%
- Brand-name and other107 claims6%
Dr. Liew's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Liew's Part D claims, 2024
- Opioids2%30 of 1,763 claims
- Antipsychotics, patients 65 and over4%72 of 1,763 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6402024: 1,5376%
Drugs named by CMS: 36 in 2024, 37 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Clarissa Liew offers telehealth to Medicare patients
Dr. Liew accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Liew as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Clarissa Liew has 2 publications on record
Dmand AI links 2 papers to Dr. Liew, published from 2011 to 2012. Dr. Liew's most frequent co-authors are William Harold Theodore, MD, Andrey Finegersh, MD and William D. Gaillard.
Papers2
Years published2011 to 2012
Dr. Liew's most frequent co-authors
- William Harold Theodore, MD2 shared papers
- Andrey Finegersh, MD1 shared paper
- William D. Gaillard1 shared paper
Recent publications by Dr. Liew
See who Dr. Liew researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Liew works with, so you can find a warm path to the right clinical neurophysiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Clarissa Liew received $10,713 in industry payments from 2016 to 2025
CMS Open Payments shows 475 general payments to Dr. Liew from 58 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Inspire Medical Systems, Inc. paid the most, $1,156.
General payments to Dr. Liew by program year, 2016 to 2025
General payments to Dr. Liew by kind, 2016 to 2025
$10.7Kin total
- Food and beverage$10,57699%
- Education$1371%
Companies that paid Dr. Liew the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Clarissa Liew's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Clarissa Liew
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Clarissa Liew's NPI number?
Dr. Clarissa Liew's NPI number is 1942495494. It was assigned on September 7, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Clarissa Liew?
Dr. Clarissa Liew is a clinical neurophysiologist in Champaign, Illinois. The primary specialty in the NPI Registry is Clinical Neurophysiology Physician (taxonomy code 2084N0600X).
Where does Dr. Clarissa Liew practice?
Dr. Liew practices at 101 W University Ave, Champaign, IL 61820. Dr. Liew's primary practice is Christie Clinic Amblatory Surgery Center in Champaign, Illinois. Dmand AI also links Dr. Liew to 2 group practices and clinics, 2 medical groups and 1 breast imaging center.
What is Dr. Clarissa Liew's office phone number?
The practice phone on file for Dr. Liew is (217) 366-1270.
What is Dr. Clarissa Liew's medical license number?
Dr. Liew holds Illinois license 036144422.
What medical group is Dr. Clarissa Liew part of?
Dr. Liew is linked to Christie Clinic. Dmand AI links Dr. Liew to 2 more medical groups.
Does Dr. Clarissa Liew accept Medicare?
Yes. CMS data shows Dr. Liew billed Medicare for 1,120 services in 2024, and Dr. Liew accepts Medicare assignment.
Does Dr. Clarissa Liew offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Liew as offering telehealth services.
How many Medicare patients does Dr. Clarissa Liew see?
CMS counts 466 Medicare patients who saw Dr. Liew in 2024, with an average age of 72.
What services does Dr. Clarissa Liew bill to Medicare?
In 2024, Dr. Liew's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and nerve and brain test (95800).
Show 5 more questionsShow fewer questions
What drugs does Dr. Clarissa Liew prescribe most?
In 2024 Medicare Part D data, Dr. Liew's most prescribed drugs by claims were Gabapentin, Carbidopa-Levodopa and Memantine HCl.
Has Dr. Clarissa Liew received payments from drug or device companies?
CMS Open Payments shows $10,713 in general payments to Dr. Liew from 58 companies from 2016 to 2025. The largest total came from Inspire Medical Systems, Inc.
How long has Dr. Clarissa Liew been practicing?
Dr. Liew graduated from medical school in 1988, 38 years ago.
Does Dr. Clarissa Liew do research?
Dmand AI links 2 publications to Dr. Liew, published from 2011 to 2012.
Who does Dr. Clarissa Liew publish with?
Dr. Liew's most frequent co-authors are William Harold Theodore, MD (2 shared papers), Andrey Finegersh, MD (1 shared paper) and William D. Gaillard (1 shared paper).
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