Cassandra J. Lacher, DO
Medical Oncology Physician · Bourbonnais, IL
Cassandra J. Lacher, DO is a medical oncology physician with a practice address in Bourbonnais, Illinois, and NPI 1467746651, issued on Jun 5, 2011. Check the license (Illinois 036163032, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Cassandra J. Lacher
- Credential
- DO
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- 036163032 IL
02005519A IN
Self-reported in NPPES; status is on the state search - Practice location
- 200 Riverside Dr, Bourbonnais, IL 60914
- Phone
- (815) 933-9660
- Enumerated
- Jun 5, 2011
- Record last updated
- Feb 6, 2024
- Fax
- (812) 886-6566
- Medicare enrollment
- Enrolled (PECOS I20230109000266); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 2011
- Entity
- Type 1 · individual
Also registered at 200 Riverside Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alan Coon, M.D., PH.D.Radiation Oncology Physician1245496025
- Alex Herskovic, M.D.Radiation Oncology Physician1093069528
- Shannon Male, FNP-BCFamily Nurse Practitioner1396246401
- Tammy McClellan, PHARMDPharmacist1649826660
- Issra Rashed, MDRadiation Oncology Physician1891045431
- Kimberly Shelanskey, FNP-BCFamily Nurse Practitioner1982646139
Verify Cassandra J. Lacher 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 036163032Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average medical oncology physician in 2024
1,873 Medicare Part D claims for 330 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 75 claims were for opioids.
Most prescribed
- Anastrozole248 claims
- Letrozole152 claims
- Alendronate Sodium116 claims
- Ondansetron Hcl98 claims
- Prochlorperazine Maleate90 claims
- Acyclovir81 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: $554.34
25 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 3,343 providers of this specialty with any payment received $11,773.47 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
- Riverside Health SystemWillmington, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical Oncology Physician providers in Illinois
There are 182 medical oncology physician records in Illinois.
Other medical oncology physician records in Illinois
- Ahmad Abu-HashyehMoline, IL1326525114
- Matthew Adess, MDHighland Park, IL1629166442
- Misbahuddin Ahmed, MDLombard, IL1922117811
- Syed Ahmed, MDOak Brook, IL1689867541
- Eugene Ahn, M.D.Chicago, IL1093911307
- Mebea Aklilu, MDChicago, IL1376527739
- Alhareth Alsayed, M.DSterling, IL1447601059
- Manik Amin, MDChicago, IL1265689889
- Saad Arain, M.D.Evanston, IL1104212992
- Mohammad Atiq, M.D.Chicago, IL1851719967
Common questions
What is Cassandra J. Lacher, DO's NPI number?
Cassandra J. Lacher, DO's National Provider Identifier (NPI) is 1467746651, issued on Jun 5, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Cassandra J. Lacher, DO located?
The NPPES record lists a practice address at 200 Riverside Dr, Bourbonnais, IL, 60914. Phone: (815) 933-9660. Providers update this record themselves, so call before visiting.
How can I verify Cassandra J. Lacher, DO's license?
NPPES lists Illinois license number 036163032, 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 Cassandra J. Lacher, DO prescribe under Medicare Part D?
In 2024, Cassandra J. Lacher, DO had 1,873 Medicare Part D claims for 330 beneficiaries; the average among medical oncology physician prescribers was 703. 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.