Gregory A. Tester, MD
Interventional Cardiology Physician · Madison, WI
Gregory A. Tester, MD is an interventional cardiology physician with a practice address in Madison, Wisconsin, and NPI 1477783603, issued on Jul 22, 2009. Check the license (Wisconsin 57105, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory A. Tester
- Credential
- MD
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License numbers
- 57105 WI
57105-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 600 Highland Ave, Madison, WI 53792
- Phone
- (608) 263-1530
- Enumerated
- Jul 22, 2009
- Record last updated
- Feb 6, 2023
- Medicare enrollment
- Enrolled (PECOS I20131219001675); accepts Medicare assignment
- Medical or professional school
- Southern Illinois University School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 129 in Wisconsin → Look up another NPI →
Also registered at 600 Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory A. Tester in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 57105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average interventional cardiology physician in 2024
657 Medicare Part D claims for 153 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Clopidogrel68 claims
- Atorvastatin Calcium67 claims
- Metoprolol Succinate49 claims
- Amoxicillin44 claims
- Amlodipine Besylate43 claims
- Rosuvastatin Calcium39 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
- University OF Wisconsin Medical Foundation IncMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory A. Tester among 129 interventional cardiology physician records in Wisconsin
Gregory A. Tester, MD 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 2009, is newer than 74% of them.
- NPI issued2009 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated2009 · median 1998 among the 111 with a school on file
- Record last updated2023 · 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 Madison → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Benjamin Ciske, M.D.Madison, WI 537921104245851
- Alexandra Erdmann, MDMadison, WI 537921447607213
- Giorgio Gimelli, MDMadison, WI 537921629044706
- Kurt Jacobson, M.D.Madison, WI 537921518947712
- Luke Lamers, MDMadison, WI 537921952353799
- Amish Raval, MDMadison, WI 537921699736074
- Alok Bachuwar, MDMadison, WI 537151730303264
- James Ballard, M.D.Madison, WI 537151508209354
Common questions
What is Gregory A. Tester, MD's NPI number?
Gregory A. Tester, MD's National Provider Identifier (NPI) is 1477783603, issued on Jul 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Gregory A. Tester, MD located?
The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 263-1530. Providers update this record themselves, so call before visiting.
How can I verify Gregory A. Tester, MD's license?
NPPES lists Wisconsin license number 57105, 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 Gregory A. Tester, MD prescribe under Medicare Part D?
In 2024, Gregory A. Tester, MD had 657 Medicare Part D claims for 153 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.