Dr. Michael Casmir Kowalczyk, DO
- Medicare services, 2024
- 1,548
- Medicare patients, 2024
- 551
- Part D claims, 2024
- 11,551
- Hospital affiliations
- 5
- Industry payments
- $13,384
- Practice address
- 3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911
- Practice phone
- Call (517) 374-7600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Capital Internal Medicine Associates
Primary care practice · Lansing, Michigan
Find Dr. Kowalczyk'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. Michael Casmir Kowalczyk is an internist in Lansing, Michigan
Dr. Kowalczyk practices at Capital Internal Medicine Associates in Lansing, Michigan.
Dr. Kowalczyk's NPI, 1649277211, was assigned on June 28, 2005. Dr. Kowalczyk graduated from Michigan State University College of Osteopathic Medicine in 1988. Dr. Kowalczyk holds Michigan license MK010436.
- NPI
- 1649277211NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244219194
- NPI enumeration date
- June 28, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (517) 374-7600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Casmir Kowalczyk practices at Capital Internal Medicine Associates in Lansing, Michigan
Dr. Kowalczyk's primary practice is Capital Internal Medicine Associates, at 3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911. The practice phone is (517) 374-7600.
- Capital Internal Medicine Associates3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911Phone(517) 374-7600
Source: Dmand AI Affiliation Data
Dr. Michael Casmir Kowalczyk is affiliated with 8 sites of care and 2 medical groups
Dr. Kowalczyk's primary practice is Capital Internal Medicine Associates in Lansing, Michigan. Dr. Kowalczyk is also affiliated with University of Michigan Health-Sparrow Lansing. The medical group on file is Capital Internal Medicine Associates. Dmand AI also links Dr. Kowalczyk to 4 more hospitals, 2 home health agencies and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Casmir Kowalczyk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kowalczyk practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Capital Internal Medicine Associates | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Casmir Kowalczyk is one of 4,804 internists in Michigan
Internal medicine is Dr. Kowalczyk's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kowalczyk is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Kowalczyk
Counts of internists 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 Casmir Kowalczyk billed Medicare for 1,548 services in 2024
CMS data shows 1,548 Medicare services from Dr. Kowalczyk across 20 procedure codes in 2024, for 551 Medicare patients. Medicare paid $102,083 for them.
Dr. Kowalczyk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8472024: 8794%
- Imaging
- 2023: 2962024: 35620%
- Other services
- 2023: 1982024: 28041%
- Tests and treatments
- 2023: 142024: 1721%
- Lab and pathology
- 2023: 02024: 16
Where Dr. Kowalczyk's Medicare services took place, 2024
- In an office1,02166%
- In a facility52734%
Dr. Kowalczyk compared with the Michigan median for internists, 2024
- Dr. Kowalczyk
- Michigan median
- Medicare services
- 1,548vs 4233.7 times
- Medicare patients
- 551vs 1593.5 times
- Part D claims
- 10,511vs 31433.5 times
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Kowalczyk'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. Kowalczyk and other internists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Casmir Kowalczyk treated 551 Medicare patients in 2024, average age 74
CMS counts 551 Medicare patients who saw Dr. Kowalczyk in 2024. The largest group is 65 to 74, with 245 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 21% are also on Medicaid. Their average risk score is 1.62, 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. Kowalczyk's median patient age at 70, with 59% women.
Dr. Kowalczyk's Medicare patients by age, 2024
Dr. Kowalczyk's Medicare patients by sex, 2024
- Women33861%
- Men21339%
Chronic conditions among Dr. Kowalczyk's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis55%
- Diabetes37%
- Mood disorders35%
- Anxiety34%
- Depression30%
- Ischemic heart disease30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kowalczyk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Casmir Kowalczyk wrote 11,551 Medicare Part D claims in 2024
In 2024, Dr. Kowalczyk wrote 11,551 Medicare Part D claims for 927 patients. 85% of them were for generic drugs. CMS names the drug for 10,511 of them, across 176 drugs with 11 or more claims each, at $1,420,196 in total drug cost. In 2023, CMS named 10,070 claims across 181 drugs.
Dr. Kowalczyk's Part D claims by kind of drug, 2024
- Generic9,777 claims85%
- Brand-name1,661 claims14%
- Other113 claims1%
Dr. Kowalczyk'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. Kowalczyk's Part D claims, 2024
- Opioids7%832 of 11,551 claims
- Antibiotics2%252 of 11,551 claims
- Antipsychotics, patients 65 and over0%40 of 11,551 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: 10,0702024: 10,5114%
Drugs named by CMS: 176 in 2024, 181 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
How Dr. Michael Casmir Kowalczyk takes part in Medicare
Dr. Kowalczyk accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Hip replacement: 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. Michael Casmir Kowalczyk received $13,384 in industry payments from 2016 to 2025
CMS Open Payments shows 840 general payments to Dr. Kowalczyk from 65 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $1,229.
General payments to Dr. Kowalczyk by program year, 2016 to 2025
General payments to Dr. Kowalczyk by kind, 2016 to 2025
- Food and beverage$13,31099%
- Education$751%
Companies that paid Dr. Kowalczyk 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. Michael Casmir Kowalczyk graduated from Michigan State University College of Osteopathic Medicine
Dr. Kowalczyk graduated from Michigan State University College of Osteopathic Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Casmir Kowalczyk'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 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. Michael Casmir Kowalczyk
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 Casmir Kowalczyk's NPI number?
Dr. Michael Casmir Kowalczyk's NPI number is 1649277211. It was assigned on June 28, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Casmir Kowalczyk?
Dr. Michael Casmir Kowalczyk is an internist in Lansing, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael Casmir Kowalczyk practice?
Dr. Kowalczyk practices at 3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911. Dr. Kowalczyk's primary practice is Capital Internal Medicine Associates in Lansing, Michigan. Dmand AI also links Dr. Kowalczyk to 4 hospitals, 2 home health agencies and 1 medical group.
What is Dr. Michael Casmir Kowalczyk's office phone number?
The practice phone on file for Dr. Kowalczyk is (517) 374-7600.
What is Dr. Michael Casmir Kowalczyk's medical license number?
Dr. Kowalczyk holds Michigan license MK010436.
Which hospitals is Dr. Michael Casmir Kowalczyk affiliated with?
Dr. Kowalczyk is affiliated with University of Michigan Health-Sparrow Lansing. Dmand AI links Dr. Kowalczyk to 4 more hospitals.
What medical group is Dr. Michael Casmir Kowalczyk part of?
Dr. Kowalczyk is linked to Capital Internal Medicine Associates. Dmand AI links Dr. Kowalczyk to 1 more medical group.
Does Dr. Michael Casmir Kowalczyk accept Medicare?
Yes. CMS data shows Dr. Kowalczyk billed Medicare for 1,548 services in 2024, and Dr. Kowalczyk accepts Medicare assignment.
How many Medicare patients does Dr. Michael Casmir Kowalczyk see?
CMS counts 551 Medicare patients who saw Dr. Kowalczyk in 2024, with an average age of 74.
What services does Dr. Michael Casmir Kowalczyk bill to Medicare?
In 2024, Dr. Kowalczyk's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and radiation oncology (77080).
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Where did Dr. Michael Casmir Kowalczyk go to medical school?
Dr. Kowalczyk graduated from Michigan State University College of Osteopathic Medicine in 1988.
What drugs does Dr. Michael Casmir Kowalczyk prescribe most?
In 2024 Medicare Part D data, Dr. Kowalczyk's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Levothyroxine Sodium.
Has Dr. Michael Casmir Kowalczyk received payments from drug or device companies?
CMS Open Payments shows $13,384 in general payments to Dr. Kowalczyk from 65 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Michael Casmir Kowalczyk been practicing?
Dr. Kowalczyk graduated from medical school in 1988, 38 years ago.
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