Zbigniew Thaddeus Lorenc, MD
Internal Medicine Physician · Crystal Lake, IL
Zbigniew Thaddeus Lorenc, MD is an internal medicine physician with a practice address in Crystal Lake, Illinois, and NPI 1902879380, issued on Feb 8, 2006. Check the license (Illinois 036054535, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Zbigniew Thaddeus Lorenc
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036054535 IL
Self-reported in NPPES; status is on the state search - Practice location
- 360 Station Drive, Crystal Lake, IL 60014
- Phone
- (815) 338-6600
- Enumerated
- Feb 8, 2006
- Record last updated
- Oct 19, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (815) 356-2351
- Medicaid ID
- 036054535 IL
- Medicare enrollment
- Enrolled (PECOS I20051129001008); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1973
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 360 Station Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amanda Diamond, PA-CPhysician Assistant1003147406
- Shannon Watley, DOObstetrics & Gynecology Physician1205821121
Verify Zbigniew Thaddeus Lorenc 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 036054535Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
165 Medicare Part D claims for 16 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Rosuvastatin Calcium17 claims
- Omeprazole15 claims
- Zolpidem Tartrate12 claims
- Nortriptyline Hcl11 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Central Dupage Physician GroupWheaton, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zbigniew Thaddeus Lorenc among 7,238 internal medicine physician records in Illinois
Zbigniew Thaddeus Lorenc, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1973 · median 2003 among the 3,580 with a school on file
- Record last updated2018 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Crystal Lake
They are 18 of the 1,442 NPPES records with a practice address in Crystal Lake, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Crystal Lake → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mukesh Arora, MDCrystal Lake, IL 600141518975796
- Syed Asghar, M.D.Crystal Lake, IL 600141629182712
- Gilbert Egekeze, MDCrystal Lake, IL 600141548361959
- George Gancayco, M.D.Crystal Lake, IL 600141477566834
- Sanjeev Gupta, MDCrystal Lake, IL 600141659471175
- Carol Kotzan, M.D.Crystal Lake, IL 600141710950100
- Sonia Mehta, M.D.Crystal Lake, IL 600141265459895
- Raman Popli, MDCrystal Lake, IL 600141013928712
Common questions
What is Zbigniew Thaddeus Lorenc, MD's NPI number?
Zbigniew Thaddeus Lorenc, MD's National Provider Identifier (NPI) is 1902879380, issued on Feb 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Zbigniew Thaddeus Lorenc, MD located?
The NPPES record lists a practice address at 360 Station Drive, Crystal Lake, IL, 60014. Phone: (815) 338-6600. Providers update this record themselves, so call before visiting.
How can I verify Zbigniew Thaddeus Lorenc, MD's license?
NPPES lists Illinois license number 036054535, 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 Zbigniew Thaddeus Lorenc, MD prescribe under Medicare Part D?
In 2024, Zbigniew Thaddeus Lorenc, MD had 165 Medicare Part D claims for 16 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Zbigniew Thaddeus Lorenc, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.