Reyhan Demircioglu, MD
Internal Medicine Physician · Waukesha, WI
Reyhan Demircioglu, MD is an internal medicine physician with a practice address in Waukesha, Wisconsin, and NPI 1215085857, issued on Jan 8, 2007. Check the license (Wisconsin 44518-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Reyhan Demircioglu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 44518-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2130 Big Bend RD, Waukesha, WI 53189
- Phone
- (262) 928-7555
- Enumerated
- Jan 8, 2007
- Record last updated
- Sep 12, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (262) 928-7575
- Medicaid ID
- 34563700 WI
- Medicare enrollment
- Enrolled (PECOS I20040927000777); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 2130 Big Bend RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathleen Brass, M.D., PHDFamily Medicine Physician1083815690
- Thomas Cantieri, M.D.Internal Medicine Physician1538132360
- Megan Edwards, MDFamily Medicine Physician1821011933
- Melanie Fasano, APNPFamily Nurse Practitioner1629891809
- Lauren Flewelen, MDFamily Medicine Physician1497989545
- Anne Frea, M.D.Family Medicine Physician1952593725
Verify Reyhan Demircioglu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 44518-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,596 Medicare Part D claims for 769 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 108 claims were for opioids.
Most prescribed
- Levothyroxine Sodium533 claims
- Losartan Potassium465 claims
- Rosuvastatin Calcium381 claims
- Omeprazole380 claims
- Amlodipine Besylate379 claims
- Metoprolol Succinate357 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.
Bills Medicare through 2 group practices
- Presbyterian Homes OF Wisconsin IncWaukesha, WI
- Prohealth Medical Group IncWaukesha, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Reyhan Demircioglu among 2,078 internal medicine physician records in Wisconsin
Reyhan Demircioglu, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 54% of them.
- NPI issued2007 · 54% of these records are older, 40% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1992 · median 2002 among the 1,098 with a school on file
- Record last updated2012 · 55% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 internal medicine physician records list a practice address in Waukesha
They are 42 of the 2,814 NPPES records with a practice address in Waukesha, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Waukesha → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Cantieri, M.D.Waukesha, WI 531891538132360
- William Lutz, MDWaukesha, WI 531891346237625
- Jonathan Bodager, M.D.Waukesha, WI 531881386006815
- Greg Brown, MDWaukesha, WI 531881841344231
- Kavisha Gandhi, MDWaukesha, WI 531881679137434
- Whitney Hoffmann, DOWaukesha, WI 531881730539206
- Jamey Jick, MDWaukesha, WI 531881902985013
- Binod Khadka, MDWaukesha, WI 531881265667430
Common questions
What is Reyhan Demircioglu, MD's NPI number?
Reyhan Demircioglu, MD's National Provider Identifier (NPI) is 1215085857, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Reyhan Demircioglu, MD located?
The NPPES record lists a practice address at 2130 Big Bend RD, Waukesha, WI, 53189. Phone: (262) 928-7555. Providers update this record themselves, so call before visiting.
How can I verify Reyhan Demircioglu, MD's license?
NPPES lists Wisconsin license number 44518-020, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Reyhan Demircioglu, MD prescribe under Medicare Part D?
In 2024, Reyhan Demircioglu, MD had 9,596 Medicare Part D claims for 769 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.