Dr. Thomas Carl Ziolkowski, DO
- Medicare services, 2024
- 27
- Medicare patients, 2024
- 65
- Part D claims, 2024
- 130
- Hospital affiliations
- 1
- Industry payments
- $42
- Practice address
- 615 S Bower Street, Greenville, MI 48838
- Practice phone
- Call (616) 754-4691
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ziolkowski'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. Thomas Carl Ziolkowski is a general surgeon in Greenville, Michigan
Dr. Ziolkowski practices at Corewell Health Greenville Hospital in Greenville, Michigan, part of Corewell Health.
Dr. Ziolkowski's NPI, 1295975068, was assigned on March 5, 2009. Dr. Ziolkowski graduated from University of New England, College of Osteo Medicine in 2006. Dr. Ziolkowski holds Michigan license 5101021507.
- NPI
- 1295975068NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577706837
- NPI enumeration date
- March 5, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 754-4691
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Carl Ziolkowski practices at Corewell Health Greenville Hospital in Greenville, Michigan
Dr. Ziolkowski's primary practice is Corewell Health Greenville Hospital, at 615 S Bower Street, Greenville, MI 48838 in Montcalm County. The practice phone is (616) 754-4691.
- Corewell Health Greenville Hospital615 S Bower Street, Greenville, MI 48838 · Montcalm CountyPhone(616) 754-4691
Source: Dmand AI Affiliation Data
Dr. Thomas Carl Ziolkowski is affiliated with 3 sites of care and 2 medical groups
Dr. Ziolkowski's primary practice is Corewell Health Greenville Hospital in Greenville, Michigan, part of Corewell Health. The medical group on file is Corewell Health Greenville Hospital. Dmand AI also links Dr. Ziolkowski to 2 more rural health clinics and 1 medical group, 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. Thomas Carl Ziolkowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ziolkowski practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Greenville Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Carl Ziolkowski is one of 1,095 general surgeons in Michigan
Surgery is Dr. Ziolkowski's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Ziolkowski is licensed in Michigan.
Specialties and state licenses
- Surgery, MichiganPrimary
General surgeons near Dr. Ziolkowski
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. Thomas Carl Ziolkowski billed Medicare for 27 services in 2024
CMS data shows 27 Medicare services from Dr. Ziolkowski across 2 procedure codes in 2024, for 65 Medicare patients. Medicare paid $5,068 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ziolkowski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 02024: 27
- Surgery
- 2023: 132024: 0100%
Dr. Ziolkowski compared with the Michigan median for general surgeons, 2024
- Dr. Ziolkowski
- Michigan median
- Medicare services
- 27vs 12679% below
- Medicare patients
- 65vs 10739% below
- Part D claims
- 97vs 303.2 times
Medians across 1,046 general surgeons in Michigan with Dmand AI profiles that report each measure.
Dr. Ziolkowski'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. Ziolkowski and other general surgeons in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Carl Ziolkowski treated 65 Medicare patients in 2024, average age 70
CMS counts 65 Medicare patients who saw Dr. Ziolkowski in 2024. The largest group is 65 to 74, with 33 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 20% are also on Medicaid. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ziolkowski's median patient age at 60, with 44% women.
Dr. Ziolkowski's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ziolkowski's Medicare patients by sex, 2024
- Women2843%
- Men3757%
Chronic conditions among Dr. Ziolkowski's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis43%
- Diabetes29%
- Anxiety28%
- Mood disorders25%
- Cancer23%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ziolkowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas Carl Ziolkowski wrote 130 Medicare Part D claims in 2024
In 2024, Dr. Ziolkowski wrote 130 Medicare Part D claims for 81 patients. 89% of them were for generic drugs. CMS names the drug for 97 of them, across 3 drugs with 11 or more claims each, at $999 in total drug cost. In 2023, CMS named 62 claims across 2 drugs.
Dr. Ziolkowski's Part D claims by kind of drug, 2024
- Generic116 claims89%
- Brand-name14 claims11%
Dr. Ziolkowski'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. Ziolkowski's Part D claims, 2024
- Opioids42%55 of 130 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: 622024: 9756%
Drugs named by CMS: 3 in 2024, 2 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. Thomas Carl Ziolkowski ranks in the 44th percentile for colonoscopy in Medicare
Dr. Ziolkowski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 14 procedures of colonoscopy by Dr. Ziolkowski, more than 44% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Ziolkowski ranks in Medicare procedure volume
- Colonoscopy
- 44th percentile14 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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)
Upper gastrointestinal (GI) endoscopy for acid reflux: 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. Thomas Carl Ziolkowski received $42 in industry payments from 2016 to 2023
CMS Open Payments shows 3 general payments to Dr. Ziolkowski from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. MAQUET Cardiovascular U.S. Sales, L.L.C. paid the most, $17.
General payments to Dr. Ziolkowski by program year, 2016 to 2023
Companies that paid Dr. Ziolkowski the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Carl Ziolkowski graduated from University of New England, College of Osteo Medicine
Dr. Ziolkowski graduated from University of New England, College of Osteo Medicine in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Carl Ziolkowski'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. Thomas Carl Ziolkowski
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. Thomas Carl Ziolkowski's NPI number?
Dr. Thomas Carl Ziolkowski's NPI number is 1295975068. It was assigned on March 5, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Carl Ziolkowski?
Dr. Thomas Carl Ziolkowski is a general surgeon in Greenville, Michigan. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Thomas Carl Ziolkowski practice?
Dr. Ziolkowski practices at 615 S Bower Street, Greenville, MI 48838. Dr. Ziolkowski's primary practice is Corewell Health Greenville Hospital in Greenville, Michigan, part of Corewell Health. Dmand AI also links Dr. Ziolkowski to 2 rural health clinics and 1 medical group.
What is Dr. Thomas Carl Ziolkowski's office phone number?
The practice phone on file for Dr. Ziolkowski is (616) 754-4691.
What is Dr. Thomas Carl Ziolkowski's medical license number?
Dr. Ziolkowski holds Michigan license 5101021507.
Which hospitals is Dr. Thomas Carl Ziolkowski affiliated with?
Dr. Ziolkowski practices at Corewell Health Greenville Hospital in Greenville, Michigan.
What medical group is Dr. Thomas Carl Ziolkowski part of?
Dr. Ziolkowski is linked to Corewell Health Greenville Hospital. Dmand AI links Dr. Ziolkowski to 1 more medical group.
Does Dr. Thomas Carl Ziolkowski accept Medicare?
Yes. CMS data shows Dr. Ziolkowski billed Medicare for 27 services in 2024, and Dr. Ziolkowski accepts Medicare assignment.
How many Medicare patients does Dr. Thomas Carl Ziolkowski see?
CMS counts 65 Medicare patients who saw Dr. Ziolkowski in 2024, with an average age of 70.
What services does Dr. Thomas Carl Ziolkowski bill to Medicare?
In 2024, Dr. Ziolkowski's most billed Medicare services were medicare service (G0121) and medicare service (G0105).
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Where did Dr. Thomas Carl Ziolkowski go to medical school?
Dr. Ziolkowski graduated from University of New England, College of Osteo Medicine in 2006.
What drugs does Dr. Thomas Carl Ziolkowski prescribe most?
In 2024 Medicare Part D data, Dr. Ziolkowski's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Peg 3350-Electrolyte and Ibuprofen.
Has Dr. Thomas Carl Ziolkowski received payments from drug or device companies?
CMS Open Payments shows $42 in general payments to Dr. Ziolkowski from 3 companies from 2016 to 2023. The largest total came from MAQUET Cardiovascular U.S. Sales, L.L.C.
How long has Dr. Thomas Carl Ziolkowski been practicing?
Dr. Ziolkowski graduated from medical school in 2006, 20 years ago.
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