Dr. Michael John Trembowicz, DO
- Medicare services, 2024
- 34
- Medicare patients, 2024
- 90
- MIPS score, 2024
- 97
- Hospital affiliations
- 2
- Industry payments
- $392
- Practice address
- 100 Michigan St NE, Grand Rapids, MI 49503
- Practice phone
- Call (616) 391-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Trembowicz's professional email, personal email and mobile number
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Dr. Michael John Trembowicz is an anesthesiologist in Grand Rapids, Michigan
Dr. Trembowicz practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Dr. Trembowicz's NPI, 1366632457, was assigned on July 26, 2007. Dr. Trembowicz holds Michigan license 5101017370.
- NPI
- 1366632457NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587815303
- NPI enumeration date
- July 26, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael John Trembowicz practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Dr. Trembowicz's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth, at 100 Michigan St NE, Grand Rapids, MI 49503 in Kent County. The practice phone is (616) 391-1774.
- Corewell Health Grand Rapids Hospitals - Butterworth100 Michigan St NE, Grand Rapids, MI 49503 · Kent CountyPhone(616) 391-1774
Source: Dmand AI Affiliation Data
Dr. Michael John Trembowicz is affiliated with 2 sites of care and 3 medical groups
Dr. Trembowicz's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dr. Trembowicz is also affiliated with Trinity Health Muskegon Hospital. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Dr. Trembowicz to 2 more medical groups, 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. Michael John Trembowicz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Trembowicz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Grand Rapids Hospitals - Butterworth | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael John Trembowicz is one of 1,302 anesthesiologists in Michigan
Anesthesiology is Dr. Trembowicz's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Trembowicz is licensed in Michigan.
Specialties and state licenses
- Anesthesiology, MichiganPrimary
Anesthesiologists near Dr. Trembowicz
Counts of anesthesiologists 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. Michael John Trembowicz billed Medicare for 34 services in 2024
CMS data shows 34 Medicare services from Dr. Trembowicz across 2 procedure codes in 2024, for 90 Medicare patients. Medicare paid $1,873 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Trembowicz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 02024: 17
- Surgery
- 2023: 192024: 1711%
Dr. Trembowicz compared with the Michigan median for anesthesiologists, 2024
- Dr. Trembowicz
- Michigan median
- Medicare services
- 34vs 8962% below
- Medicare patients
- 90vs 17749% below
Medians across 1,283 anesthesiologists in Michigan with Dmand AI profiles that report each measure.
Dr. Trembowicz'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. Michael John Trembowicz treated 90 Medicare patients in 2024, average age 72
CMS counts 90 Medicare patients who saw Dr. Trembowicz in 2024. The largest group is 65 to 74, with 43 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.82, 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. Trembowicz's median patient age at 65, with 52% women.
Dr. Trembowicz's Medicare patients by age, 2024
Dr. Trembowicz's Medicare patients by sex, 2024
- Women4449%
- Men4651%
Chronic conditions among Dr. Trembowicz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Heart failure43%
- Chronic kidney disease42%
- Diabetes42%
- Ischemic heart disease38%
- Anxiety34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Trembowicz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael John Trembowicz scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Trembowicz for performance year 2024, reported as part of a group. Dr. Trembowicz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Trembowicz's MIPS scores, performance year 2024
- 97of 100Final score
- 95.7of 100Quality
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Michael John Trembowicz received $392 in industry payments from 2016 to 2024
CMS Open Payments shows 11 general payments to Dr. Trembowicz from 7 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Mallinckrodt Enterprises LLC paid the most, $125.
General payments to Dr. Trembowicz by program year, 2016 to 2024
Companies that paid Dr. Trembowicz the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Michael John Trembowicz'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) |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Michael John Trembowicz
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. Michael John Trembowicz's NPI number?
Dr. Michael John Trembowicz's NPI number is 1366632457. It was assigned on July 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael John Trembowicz?
Dr. Michael John Trembowicz is an anesthesiologist in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Michael John Trembowicz practice?
Dr. Trembowicz practices at 100 Michigan St NE, Grand Rapids, MI 49503. Dr. Trembowicz's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Dr. Trembowicz to 2 medical groups.
What is Dr. Michael John Trembowicz's office phone number?
The practice phone on file for Dr. Trembowicz is (616) 391-1774.
What is Dr. Michael John Trembowicz's medical license number?
Dr. Trembowicz holds Michigan license 5101017370.
Which hospitals is Dr. Michael John Trembowicz affiliated with?
Dr. Trembowicz practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Dr. Trembowicz is also affiliated with Trinity Health Muskegon Hospital.
What medical group is Dr. Michael John Trembowicz part of?
Dr. Trembowicz is linked to Corewell Health Medical Group West. Dmand AI links Dr. Trembowicz to 2 more medical groups.
Does Dr. Michael John Trembowicz accept Medicare?
Yes. CMS data shows Dr. Trembowicz billed Medicare for 34 services in 2024, and Dr. Trembowicz accepts Medicare assignment.
What is Dr. Michael John Trembowicz's MIPS score?
Dr. Trembowicz's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Michael John Trembowicz see?
CMS counts 90 Medicare patients who saw Dr. Trembowicz in 2024, with an average age of 72.
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What services does Dr. Michael John Trembowicz bill to Medicare?
In 2024, Dr. Trembowicz's most billed Medicare services were anesthesia (00811) and surgery: heart and blood vessels (36620).
Has Dr. Michael John Trembowicz received payments from drug or device companies?
CMS Open Payments shows $392 in general payments to Dr. Trembowicz from 7 companies from 2016 to 2024. The largest total came from Mallinckrodt Enterprises LLC.
How long has Dr. Michael John Trembowicz been practicing?
Dr. Trembowicz graduated from medical school in 2001, 25 years ago.
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