Gregory Tester, MD
NPI 1477783603 · Interventional Cardiology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Interventional Cardiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Tester, MD is a Interventional Cardiology Physician provider in Madison, WI (NPI 1477783603).
Provider details
- NPI number
- 1477783603
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 57105-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
924 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 254 | $11 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 158 | $90 |
| Insertion of Tube in Coronary Artery for Diagnosis With Review By Radiologist93454 | 123 | $170 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 82 | $15 |
| Insertion of Stents With Balloon Dilation of Coronary Artery Or Branch, Single Artery Or Branch92928 | 68 | $462 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 68 | 35 |
| Atorvastatin Calcium | 67 | 22 |
| Metoprolol Succinate | 49 | 16 |
| Amoxicillin | 44 | 29 |
| Amlodipine Besylate | 43 | 24 |
| Rosuvastatin Calcium | 39 | 14 |
| Apixaban |
Practice location
Mailing address
Additional practice locations (1)
- 700 S Park StMadison, WI 53715-1830Phone: (608) 260-2900Fax: (608) 260-2956
Registry dates
- Enumerated
- 2009-07-22
- Last updated
- 2023-02-06
- Certified
- 2023-02-06
Frequently asked questions
- What is Gregory Tester's NPI number?
- Gregory Tester's National Provider Identifier (NPI) is 1477783603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Tester's specialty?
- Gregory Tester is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Tester located?
- Gregory Tester's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-1830.
- What is Gregory Tester's phone number?
- The practice phone number listed in the NPPES registry for Gregory Tester is (608) 263-1530.
- Does Gregory Tester accept Medicare?
- Gregory Tester is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Tester's NPI active?
- Yes — Gregory Tester's NPI (1477783603) is active in the NPPES registry as of the last update on 2023-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.