Claudia Tiwet, MD
Internal Medicine Physician · Gurnee, IL
Claudia Tiwet, MD is an internal medicine physician with a practice address in Gurnee, Illinois, and NPI 1114094646, issued on Nov 29, 2006. Check the license (Illinois 036-105276, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Claudia Tiwet
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-105276 IL
Self-reported in NPPES; status is on the state search - Practice location
- 731 S IL Route 21 Ste 130, Gurnee, IL 60031
- Phone
- (847) 566-3337
- Enumerated
- Nov 29, 2006
- Record last updated
- Apr 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 731 S IL Route 21 Ste 130
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amber Ijaz, D.O.Family Medicine Physician1750818555
- Stacy Panozzo, D.O.Internal Medicine Physician1316292592
- Hanju Wang, APN-CNPNurse Practitioner1912013012
Verify Claudia Tiwet 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 036-105276Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% more Medicare Part D claims than the average internal medicine physician in 2024
4,630 Medicare Part D claims for 476 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 91 claims were for opioids.
Most prescribed
- Atorvastatin Calcium364 claims
- Amlodipine Besylate245 claims
- Levothyroxine Sodium214 claims
- Losartan Potassium205 claims
- Omeprazole134 claims
- Lisinopril128 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.
28 internal medicine physician records list a practice address in Gurnee
They are 28 of the 846 NPPES records with a practice address in Gurnee, and 7,238 internal medicine physician records in Illinois.
All 28 in Gurnee → All 7,238 in Illinois → Every provider in Gurnee →
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Elmer Abbo, MDBurr Ridge, IL1710048541
- Paul Abbo, M.D.River Forest, IL1083693378
Common questions
What is Claudia Tiwet, MD's NPI number?
Claudia Tiwet, MD's National Provider Identifier (NPI) is 1114094646, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Claudia Tiwet, MD located?
The NPPES record lists a practice address at 731 S IL Route 21 Ste 130, Gurnee, IL, 60031. Phone: (847) 566-3337. Providers update this record themselves, so call before visiting.
How can I verify Claudia Tiwet, MD's license?
NPPES lists Illinois license number 036-105276, 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 Claudia Tiwet, MD prescribe under Medicare Part D?
In 2024, Claudia Tiwet, MD had 4,630 Medicare Part D claims for 476 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.