Dr. John Florian Kazmierski, DO
- Medicare services, 2021
- 3,608
- Part D claims, 2022
- 559
- Hospital affiliations
- 1
- Industry payments
- $12,106
- Medical group
- 1
- Practice address
- 416 Connable Ave, Petoskey, MI 49770
- Practice phone
- Call (231) 487-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. John Florian Kazmierski is a cardiologist in Petoskey, Michigan
Dr. Kazmierski practices at McLaren Northern Michigan in Petoskey, Michigan, part of McLaren Health Care.
Dr. Kazmierski's NPI, 1164403481, was assigned on November 14, 2005. Dr. Kazmierski graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1976. Dr. Kazmierski holds Michigan license JK007144.
- NPI
- 1164403481NPI Registry (opens in a new tab)
- NPI enumeration date
- November 14, 2005
- NPI status
- Active
- Practice phone
- (231) 487-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Florian Kazmierski practices at McLaren Northern Michigan in Petoskey, Michigan
Dr. Kazmierski's primary practice is McLaren Northern Michigan, at 416 Connable Ave, Petoskey, MI 49770 in Emmet County. The practice phone is (231) 487-4000.
- McLaren Northern Michigan416 Connable Ave, Petoskey, MI 49770 · Emmet CountyPhone(231) 487-4000
Source: Dmand AI Affiliation Data
Dr. John Florian Kazmierski is affiliated with 2 sites of care and 1 medical group
Dr. Kazmierski's primary practice is McLaren Northern Michigan in Petoskey, Michigan, part of McLaren Health Care. Dmand AI also links Dr. Kazmierski to 1 group practice or clinic 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. John Florian Kazmierski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kazmierski practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McLaren Northern Michigan | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across McLaren Health Care and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Florian Kazmierski is one of 768 cardiologists in Michigan
Cardiovascular disease is Dr. Kazmierski's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Kazmierski is licensed in Michigan.
Specialties and state licenses
- Cardiovascular disease, MichiganPrimary
Cardiologists near Dr. Kazmierski
Counts of 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. John Florian Kazmierski billed Medicare for 3,608 services in 2021
CMS data shows 3,608 Medicare services from Dr. Kazmierski across 22 procedure codes in 2021. Medicare paid $113,828 for them.
Dr. Kazmierski's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Tests and treatments
- 2020: 3,3112021: 2,19134%
- Office and hospital visits
- 2020: 1,9772021: 1,32733%
- Other services
- 2020: 382021: 5442%
- Imaging
- 2020: 332021: 369%
Where Dr. Kazmierski's Medicare services took place, 2021
- In an office3419%
- In a facility3,26791%
Dr. Kazmierski compared with the Michigan median for cardiologists, 2021
- Dr. Kazmierski
- Michigan median
- Medicare services
- 3,608vs 1,4352.5 times
- Part D claims
- 559vs 1,56264% below
Medians across 749 cardiologists in Michigan with Dmand AI profiles that report each measure.
Dr. Kazmierski's most billed Medicare procedure codes, 2021
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. Kazmierski and other cardiologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Florian Kazmierski's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Kazmierski's median patient age at 71, with 31% women.
Dr. Kazmierski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women31%
- Men69%
Source: Dmand AI Patient Panel Data
Dr. John Florian Kazmierski wrote 559 Medicare Part D claims in 2022
In 2022, Dr. Kazmierski wrote 559 Medicare Part D claims. They cover 18 drugs, with $99,820 in total drug cost. In 2021, CMS named 4,230 claims across 41 drugs.
Dr. Kazmierski's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 4,2302022: 55987%
Drugs named by CMS: 18 in 2022, 41 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. John Florian Kazmierski received $12,106 in industry payments from 2016 to 2024
CMS Open Payments shows 406 general payments to Dr. Kazmierski from 41 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 96% of the total. Abbott Laboratories paid the most, $2,476.
General payments to Dr. Kazmierski by program year, 2016 to 2024
General payments to Dr. Kazmierski by kind, 2016 to 2024
- Food and beverage$11,66696%
- Travel and lodging$2232%
- Education$2162%
Companies that paid Dr. Kazmierski the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Florian Kazmierski graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Kazmierski graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1976.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Florian Kazmierski'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. John Florian Kazmierski
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. John Florian Kazmierski's NPI number?
Dr. John Florian Kazmierski's NPI number is 1164403481. It was assigned on November 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Florian Kazmierski?
Dr. John Florian Kazmierski is a cardiologist in Petoskey, Michigan. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. John Florian Kazmierski practice?
Dr. Kazmierski practices at 416 Connable Ave, Petoskey, MI 49770. Dr. Kazmierski's primary practice is McLaren Northern Michigan in Petoskey, Michigan, part of McLaren Health Care. Dmand AI also links Dr. Kazmierski to 1 group practice or clinic and 1 medical group.
What is Dr. John Florian Kazmierski's office phone number?
The practice phone on file for Dr. Kazmierski is (231) 487-4000.
What is Dr. John Florian Kazmierski's medical license number?
Dr. Kazmierski holds Michigan license JK007144.
Which hospitals is Dr. John Florian Kazmierski affiliated with?
Dr. Kazmierski practices at McLaren Northern Michigan in Petoskey, Michigan.
Does Dr. John Florian Kazmierski accept Medicare?
Yes. CMS data shows Dr. Kazmierski billed Medicare for 3,608 services in 2021.
What services does Dr. John Florian Kazmierski bill to Medicare?
In 2021, Dr. Kazmierski's most billed Medicare services were heart test or procedure (93010), office visit, established patient (99213) and hospital inpatient care (99232).
Where did Dr. John Florian Kazmierski go to medical school?
Dr. Kazmierski graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1976.
What drugs does Dr. John Florian Kazmierski prescribe most?
In 2022 Medicare Part D data, Dr. Kazmierski's most prescribed drugs by claims were Eliquis, Atorvastatin Calcium and Metoprolol Succinate.
Has Dr. John Florian Kazmierski received payments from drug or device companies?
CMS Open Payments shows $12,106 in general payments to Dr. Kazmierski from 41 companies from 2016 to 2024. The largest total came from Abbott Laboratories.
How long has Dr. John Florian Kazmierski been practicing?
Dr. Kazmierski graduated from medical school in 1976, 50 years ago.
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