Dr. Gregory A. Tester, MD
- Medicare services, 2024
- 924
- Medicare patients, 2024
- 370
- Part D claims, 2024
- 657
- MIPS score, 2024
- 83
- Hospital affiliations
- 5
- Practice address
- 600 Highland Ave, Madison, WI 53792
- Practice phone
- Call (608) 265-1978
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Health Services - Madison (Highland Ave)
College / University Student Health · Madison, Wisconsin
Find Dr. Tester's professional email, personal email and mobile number
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Dr. Gregory A. Tester is an interventional cardiologist in Madison, Wisconsin
Dr. Tester practices at University Health Services - Madison (Highland Ave) in Madison, Wisconsin.
Dr. Tester's NPI, 1477783603, was assigned on July 22, 2009. Dr. Tester graduated from Southern Illinois University School of Medicine in 2009. Dr. Tester holds Wisconsin license 57105.
- NPI
- 1477783603NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133245285
- NPI enumeration date
- July 22, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (608) 265-1978
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory A. Tester practices at University Health Services - Madison (Highland Ave) in Madison, Wisconsin
Dr. Tester's primary practice is University Health Services - Madison (Highland Ave), at 600 Highland Ave, Madison, WI 53792. The practice phone is (608) 265-1978.
- University Health Services - Madison (Highland Ave)600 Highland Ave, Madison, WI 53792Phone(608) 265-1978
Source: Dmand AI Affiliation Data
Dr. Gregory A. Tester is affiliated with 6 sites of care and 1 medical group
Dr. Tester's primary practice is University Health Services - Madison (Highland Ave) in Madison, Wisconsin. Dr. Tester is also affiliated with University Hospital. The medical group on file is UW Health. Dmand AI also links Dr. Tester to 4 more hospitals, each named with a free account. Dr. Tester's employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory A. Tester's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tester practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Health Services - Madison (Highland Ave) | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory A. Tester is one of 120 interventional cardiologists in Wisconsin
Interventional cardiology is Dr. Tester's primary specialty in the NPI Registry, under taxonomy code 207RI0011X. Dr. Tester is licensed in Wisconsin.
Specialties and state licenses
- Interventional cardiology, WisconsinPrimary
Interventional cardiologists near Dr. Tester
Counts of interventional cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory A. Tester billed Medicare for 924 services in 2024
CMS data shows 924 Medicare services from Dr. Tester across 13 procedure codes in 2024, for 370 Medicare patients. Medicare paid $93,404 for them.
Dr. Tester's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5482024: 5392%
- Office and hospital visits
- 2023: 2822024: 23716%
- Other services
- 2023: 02024: 82
- Surgery
- 2023: 692024: 664%
Where Dr. Tester's Medicare services took place, 2024
- In an office263%
- In a facility89897%
Dr. Tester compared with the Wisconsin median for interventional cardiologists, 2024
- Dr. Tester
- Wisconsin median
- Medicare services
- 924vs 1,28728% below
- Medicare patients
- 370vs 67245% below
- Part D claims
- 564vs 1,82069% below
Medians across 120 interventional cardiologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Tester's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory A. Tester treated 370 Medicare patients in 2024, average age 75
CMS counts 370 Medicare patients who saw Dr. Tester in 2024. The largest group is 65 to 74, with 155 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.83, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Tester's median patient age at 74, with 42% women.
Dr. Tester's Medicare patients by age, 2024
Dr. Tester's Medicare patients by sex, 2024
- Women14940%
- Men22160%
Chronic conditions among Dr. Tester's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Heart failure58%
- Arthritis43%
- Diabetes41%
- Atrial fibrillation40%
- Chronic kidney disease36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tester's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women42%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory A. Tester wrote 657 Medicare Part D claims in 2024
In 2024, Dr. Tester wrote 657 Medicare Part D claims for 153 patients. 89% of them were for generic drugs. CMS names the drug for 564 of them, across 17 drugs with 11 or more claims each, at $47,439 in total drug cost. In 2023, CMS named 483 claims across 15 drugs.
Dr. Tester's Part D claims by kind of drug, 2024
- Generic587 claims89%
- Brand-name70 claims11%
Dr. Tester's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Tester's Part D claims, 2024
- Antibiotics7%46 of 657 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4832024: 56417%
Drugs named by CMS: 17 in 2024, 15 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gregory A. Tester scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Tester for performance year 2024, reported as part of a group. Dr. Tester accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tester as offering telehealth. CMS counts 61 procedures of coronary angioplasty and stenting by Dr. Tester, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Tester's MIPS scores, performance year 2024
- 83of 100Final score
- 87.8of 100Quality
- 77of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Tester ranks in Medicare procedure volume
- Coronary angioplasty and stenting
- 89th percentile61 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory A. Tester received $7,190 in industry payments from 2016 to 2025
CMS Open Payments shows 50 general payments to Dr. Tester from 4 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 71% of the total. Edwards Lifesciences Corporation paid the most, $5,327.
General payments to Dr. Tester by program year, 2016 to 2025
General payments to Dr. Tester by kind, 2016 to 2025
- Travel and lodging$5,12871%
- Food and beverage$1,95827%
- Education$1041%
Companies that paid Dr. Tester the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory A. Tester graduated from Southern Illinois University School of Medicine
Dr. Tester graduated from Southern Illinois University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory A. Tester's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gregory A. Tester
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What is Dr. Gregory A. Tester's NPI number?
Dr. Gregory A. Tester's NPI number is 1477783603. It was assigned on July 22, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory A. Tester?
Dr. Gregory A. Tester is an interventional cardiologist in Madison, Wisconsin. The primary specialty in the NPI Registry is Interventional Cardiology Physician (taxonomy code 207RI0011X).
Where does Dr. Gregory A. Tester practice?
Dr. Tester practices at 600 Highland Ave, Madison, WI 53792. Dr. Tester's primary practice is University Health Services - Madison (Highland Ave) in Madison, Wisconsin. Dmand AI also links Dr. Tester to 4 hospitals.
What is Dr. Gregory A. Tester's office phone number?
The practice phone on file for Dr. Tester is (608) 265-1978.
What is Dr. Gregory A. Tester's medical license number?
Dr. Tester holds Wisconsin license 57105.
Which hospitals is Dr. Gregory A. Tester affiliated with?
Dr. Tester is affiliated with University Hospital. Dmand AI links Dr. Tester to 4 more hospitals.
What medical group is Dr. Gregory A. Tester part of?
Dr. Tester is linked to UW Health.
Does Dr. Gregory A. Tester accept Medicare?
Yes. CMS data shows Dr. Tester billed Medicare for 924 services in 2024, and Dr. Tester accepts Medicare assignment.
Does Dr. Gregory A. Tester offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tester as offering telehealth services.
What is Dr. Gregory A. Tester's MIPS score?
Dr. Tester's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Gregory A. Tester see?
CMS counts 370 Medicare patients who saw Dr. Tester in 2024, with an average age of 75.
What services does Dr. Gregory A. Tester bill to Medicare?
In 2024, Dr. Tester's most billed Medicare services were special service (99152), office visit, established patient (99214) and heart test or procedure (93454).
Where did Dr. Gregory A. Tester go to medical school?
Dr. Tester graduated from Southern Illinois University School of Medicine in 2009.
What drugs does Dr. Gregory A. Tester prescribe most?
In 2024 Medicare Part D data, Dr. Tester's most prescribed drugs by claims were Clopidogrel, Atorvastatin Calcium and Metoprolol Succinate.
Has Dr. Gregory A. Tester received payments from drug or device companies?
CMS Open Payments shows $7,190 in general payments to Dr. Tester from 4 companies from 2016 to 2025. The largest total came from Edwards Lifesciences Corporation.
How long has Dr. Gregory A. Tester been practicing?
Dr. Tester graduated from medical school in 2009, 17 years ago.
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