Dr. Gregory M. Matzke, MD
- Medicare services, 2024
- 233
- Medicare patients, 2024
- 164
- Part D claims, 2024
- 112
- Hospital affiliations
- 5
- Industry payments
- $22,798
- Practice address
- 700 South Park St, Madison, WI 53715
- Practice phone
- Call (608) 251-6100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Matzke's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gregory M. Matzke is a general surgeon in Madison, Wisconsin
Dr. Matzke practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care.
Dr. Matzke's NPI, 1326096546, was assigned on May 4, 2006. Dr. Matzke graduated from University of Wisconsin School of Medicine in 2000. Dr. Matzke holds Wisconsin license 47552-020.
- NPI
- 1326096546NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183654940
- NPI enumeration date
- May 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (608) 251-6100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory M. Matzke practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin
Dr. Matzke's primary practice is SSM Health St. Mary's Hospital - Madison, at 700 South Park St, Madison, WI 53715 in Dane County. The practice phone is (608) 251-6100.
- SSM Health St. Mary's Hospital - Madison700 South Park St, Madison, WI 53715 · Dane CountyPhone(608) 251-6100
Source: Dmand AI Affiliation Data
Dr. Gregory M. Matzke is affiliated with 5 sites of care and 1 medical group
Dr. Matzke's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dr. Matzke is also affiliated with SSM Health St. Clare Hospital - Baraboo. The medical group on file is SSM Health Dean Medical Group. Dmand AI also links Dr. Matzke to 3 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory M. Matzke's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Matzke practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Mary's Hospital - Madison | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory M. Matzke is one of 565 general surgeons in Wisconsin
Surgery is Dr. Matzke's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Matzke is licensed in Wisconsin.
Specialties and state licenses
- Surgery, WisconsinPrimary
General surgeons near Dr. Matzke
Counts of general surgeons 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 M. Matzke billed Medicare for 233 services in 2024
CMS data shows 233 Medicare services from Dr. Matzke across 9 procedure codes in 2024, for 164 Medicare patients. Medicare paid $22,448 for them.
Dr. Matzke's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2582024: 18030%
- Surgery
- 2023: 1082024: 5351%
Where Dr. Matzke's Medicare services took place, 2024
- In an office18077%
- In a facility5323%
Dr. Matzke compared with the Wisconsin median for general surgeons, 2024
- Dr. Matzke
- Wisconsin median
- Medicare services
- 233vs 992.4 times
- Medicare patients
- 164vs 10064% above
- Part D claims
- 37vs 37Close to median
Medians across 557 general surgeons in Wisconsin with Dmand AI profiles that report each measure.
Dr. Matzke'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Matzke and other general surgeons in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory M. Matzke treated 164 Medicare patients in 2024, average age 73
CMS counts 164 Medicare patients who saw Dr. Matzke in 2024. The largest group is 65 to 74, with 73 patients. 72% of them have high blood pressure, and 67% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Matzke's median patient age at 63, with 47% women.
Dr. Matzke's Medicare patients by age, 2024
Dr. Matzke's Medicare patients by sex, 2024
- Women7848%
- Men8652%
Chronic conditions among Dr. Matzke's Medicare patients, 2024
- High blood pressure72%
- High cholesterol67%
- Arthritis40%
- Diabetes33%
- Anxiety29%
- Mood disorders24%
- Chronic kidney disease23%
- Ischemic heart disease19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Matzke's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory M. Matzke wrote 112 Medicare Part D claims in 2024
In 2024, Dr. Matzke wrote 112 Medicare Part D claims for 51 patients. 54% of them were for generic drugs. CMS names the drug for 37 of them, across 1 drug with 11 or more claims each, at $21,270 in total drug cost. In 2023, CMS named 49 claims across 3 drugs.
Dr. Matzke's Part D claims by kind of drug, 2024
- Generic61 claims54%
- Brand-name51 claims46%
Dr. Matzke'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. Matzke's Part D claims, 2024
- Antibiotics10%11 of 112 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: 492024: 3724%
Drugs named by CMS: 1 in 2024, 3 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 M. Matzke offers telehealth to Medicare patients
Dr. Matzke accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Matzke as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory M. Matzke received $22,798 in industry payments from 2016 to 2025
CMS Open Payments shows 97 general payments to Dr. Matzke from 13 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 32% of the total. Intuitive Surgical, Inc. paid the most, $9,722.
General payments to Dr. Matzke by program year, 2016 to 2025
General payments to Dr. Matzke by kind, 2016 to 2025
- Consulting fees$7,21332%
- Education$7,00031%
- Food and beverage$3,85017%
- Travel and lodging$2,96113%
- Speaker and faculty fees$1,7758%
Companies that paid Dr. Matzke 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 M. Matzke graduated from University of Wisconsin School of Medicine
Dr. Matzke graduated from University of Wisconsin School of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory M. Matzke'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)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 M. Matzke
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory M. Matzke's NPI number?
Dr. Gregory M. Matzke's NPI number is 1326096546. It was assigned on May 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory M. Matzke?
Dr. Gregory M. Matzke is a general surgeon in Madison, Wisconsin. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Gregory M. Matzke practice?
Dr. Matzke practices at 700 South Park St, Madison, WI 53715. Dr. Matzke's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dmand AI also links Dr. Matzke to 3 hospitals.
What is Dr. Gregory M. Matzke's office phone number?
The practice phone on file for Dr. Matzke is (608) 251-6100.
What is Dr. Gregory M. Matzke's medical license number?
Dr. Matzke holds Wisconsin license 47552-020.
Which hospitals is Dr. Gregory M. Matzke affiliated with?
Dr. Matzke practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin. Dr. Matzke is also affiliated with SSM Health St. Clare Hospital - Baraboo. Dmand AI links Dr. Matzke to 3 more hospitals.
What medical group is Dr. Gregory M. Matzke part of?
Dr. Matzke is linked to SSM Health Dean Medical Group.
Does Dr. Gregory M. Matzke accept Medicare?
Yes. CMS data shows Dr. Matzke billed Medicare for 233 services in 2024, and Dr. Matzke accepts Medicare assignment.
Does Dr. Gregory M. Matzke offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Matzke as offering telehealth services.
How many Medicare patients does Dr. Gregory M. Matzke see?
CMS counts 164 Medicare patients who saw Dr. Matzke in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Gregory M. Matzke bill to Medicare?
In 2024, Dr. Matzke's most billed Medicare services were surgery: heart and blood vessels (36415), hospital inpatient care (99232) and office visit, established patient (99213).
Where did Dr. Gregory M. Matzke go to medical school?
Dr. Matzke graduated from University of Wisconsin School of Medicine in 2000.
What drugs does Dr. Gregory M. Matzke prescribe most?
In 2024 Medicare Part D data, Dr. Matzke's most prescribed drugs by claims were Creon.
Has Dr. Gregory M. Matzke received payments from drug or device companies?
CMS Open Payments shows $22,798 in general payments to Dr. Matzke from 13 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Gregory M. Matzke been practicing?
Dr. Matzke graduated from medical school in 2000, 26 years ago.
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