Efstathios S. Naum, M.D.
Interventional Cardiology Physician · Germantown, WI
Efstathios S. Naum, M.D. is an interventional cardiology physician with a practice address in Germantown, Wisconsin, and NPI 1205866332, issued on Jul 4, 2006. Check the license (Wisconsin 45229, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Efstathios S. Naum
- Credential
- M.D.
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License number
- 45229 WI
Self-reported in NPPES; status is on the state search - Practice location
- W180N11070 River Lin, Germantown, WI 53022
- Phone
- (262) 532-8441
- Enumerated
- Jul 4, 2006
- Record last updated
- Feb 9, 2025
- Medicaid ID
- 34335900 WI
- Medicare enrollment
- Enrolled (PECOS I20050621000670); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 129 in Wisconsin → Look up another NPI →
Verify Efstathios S. Naum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% more Medicare Part D claims than the average interventional cardiology physician in 2024
4,703 Medicare Part D claims for 600 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Atorvastatin Calcium820 claims
- Metoprolol Succinate381 claims
- Carvedilol358 claims
- Rosuvastatin Calcium345 claims
- Amlodipine Besylate303 claims
- Losartan Potassium270 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 one group practice
- Aurora Advanced Healthcare, Inc.Hartford, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Efstathios S. Naum among 129 interventional cardiology physician records in Wisconsin
Efstathios S. Naum, M.D. is one of 129 interventional cardiology physician records with a practice address in Wisconsin. 92% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 44% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated1997 · median 1998 among the 111 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in Wisconsin
There are 129 interventional cardiology physician records in Wisconsin.
All 129 in Wisconsin → Every provider in Germantown → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Adam Bykowski, D.O.Grafton, WI 530241427409317
- Ali Khan, MDGrafton, WI 530241144325051
- Timothy Pow, M.D.Grafton, WI 530241043714975
- David Engle, M.D.Brookfield, WI 530051386686251
- Tejwant SinghBrookfield, WI 530051841433638
- Ramagopal Tumuluri, MDBrookfield, WI 530451063489615
- Christopher Marowski, M.D.Menomonee Falls, WI 530511508896788
- Matthew KlinkaSummit, WI 530661790274934
Common questions
What is Efstathios S. Naum, M.D.'s NPI number?
Efstathios S. Naum, M.D.'s National Provider Identifier (NPI) is 1205866332, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Efstathios S. Naum, M.D. located?
The NPPES record lists a practice address at W180N11070 River Lin, Germantown, WI, 53022. Phone: (262) 532-8441. Providers update this record themselves, so call before visiting.
How can I verify Efstathios S. Naum, M.D.'s license?
NPPES lists Wisconsin license number 45229, 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 Efstathios S. Naum, M.D. prescribe under Medicare Part D?
In 2024, Efstathios S. Naum, M.D. had 4,703 Medicare Part D claims for 600 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. 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.