Karen W. Lai
Family Medicine Physician · Lake Zurich, IL
Karen W. Lai is a family medicine physician with a practice address in Lake Zurich, Illinois, and NPI 1851966543, issued on May 25, 2021. Check the license (Illinois 036-176432, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Karen W. Lai
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 036-176432 IL
DR.0072025 CO
Self-reported in NPPES; status is on the state search - Practice location
- 350 Surryse RD Ste 100, Lake Zurich, IL 60047
- Phone
- (847) 438-2144
- Enumerated
- May 25, 2021
- Record last updated
- Sep 15, 2025
- Fax
- (847) 438-4654
- Medicare enrollment
- Enrolled (PECOS I20250909004318); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 350 Surryse RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen W. Lai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-176432Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family medicine physician in 2024
441 Medicare Part D claims for 86 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate28 claims
- Levothyroxine Sodium26 claims
- Atorvastatin Calcium19 claims
- Gabapentin19 claims
- Losartan Potassium19 claims
- Lisinopril16 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: $22.34
1 payment: food and beverage; the largest payer was AngioDynamics, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Advocate Health And Hospitals CorporationBuffalo Grove, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen W. Lai among 6,215 family medicine physician records in Illinois
Karen W. Lai is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 84% of them.
- NPI issued2021 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2022 · median 2006 among the 3,714 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 family medicine physician records list a practice address in Lake Zurich
They are 12 of the 352 NPPES records with a practice address in Lake Zurich, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Lake Zurich → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Shad Ahmad, MDLake Zurich, IL 600471417941725
- Raymond Bianchi, M.D.Lake Zurich, IL 600471114916558
- Daniel Di Iorio, MD, DCLong Grove, IL 600471083662050
- Alison Drumm, MDLake Zurich, IL 600471063406346
- Tiffany Holland, M.D.Lake Zurich, IL 600471154551620
- Simran Kamboj, MDKildeer, IL 600471336473198
- John Kolb, MDLake Zurich, IL 600471326032632
- Vikaruddin Mohammed, M.D.Long Grove, IL 600471568664969
Common questions
What is Karen W. Lai's NPI number?
Karen W. Lai's National Provider Identifier (NPI) is 1851966543, issued on May 25, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Karen W. Lai located?
The NPPES record lists a practice address at 350 Surryse RD Ste 100, Lake Zurich, IL, 60047. Phone: (847) 438-2144. Providers update this record themselves, so call before visiting.
How can I verify Karen W. Lai's license?
NPPES lists Illinois license number 036-176432, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen W. Lai prescribe under Medicare Part D?
In 2024, Karen W. Lai had 441 Medicare Part D claims for 86 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.