Dr. Mark D. Shewczyk, MD
- Medicare services, 2024
- 207
- Medicare patients, 2024
- 105
- Part D claims, 2024
- 5,128
- Industry payments
- $166
- Affiliated sites
- 1
- Practice address
- 2311 N Prospect Ave, Milwaukee, WI 53211
- Practice phone
- Call (414) 585-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ascension Columbia St Mary's Hospital Milwaukee
Milwaukee, Wisconsin
Find Dr. Shewczyk'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. Mark D. Shewczyk is a family medicine physician in Milwaukee, Wisconsin
Dr. Shewczyk practices at Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin.
Dr. Shewczyk's NPI, 1609809672, was assigned on July 10, 2006. Dr. Shewczyk graduated from Un of California, Irvine, College of Medicine in 1983. Dr. Shewczyk holds Wisconsin license 28080.
- NPI
- 1609809672NPI Registry (opens in a new tab)
- NPI enumeration date
- July 10, 2006
- NPI status
- Active
- Practice phone
- (414) 585-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark D. Shewczyk practices at Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin
Dr. Shewczyk's primary practice is Ascension Columbia St Mary's Hospital Milwaukee, at 2311 N Prospect Ave, Milwaukee, WI 53211 in Milwaukee County. The practice phone is (414) 585-1000.
- Ascension Columbia St Mary's Hospital Milwaukee2311 N Prospect Ave, Milwaukee, WI 53211 · Milwaukee CountyPhone(414) 585-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark D. Shewczyk is affiliated with 2 sites of care and 1 medical group
Dr. Shewczyk's primary practice is Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin. The medical group on file is Ascension Columbia St. Mary's Hospital - Milwaukee Campus. Dmand AI also links Dr. Shewczyk to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark D. Shewczyk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shewczyk practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Columbia St Mary's Hospital Milwaukee | Available with a free account |
| +1 more affiliated site | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark D. Shewczyk is one of 3,101 family medicine physicians in Wisconsin
Family medicine is Dr. Shewczyk's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Shewczyk is licensed in Wisconsin.
Specialties and state licenses
- Family medicine, WisconsinPrimary
Family medicine physicians near Dr. Shewczyk
Counts of family medicine physicians 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. Mark D. Shewczyk billed Medicare for 207 services in 2024
CMS data shows 207 Medicare services from Dr. Shewczyk across 3 procedure codes in 2024, for 105 Medicare patients. Medicare paid $15,740 for them. Every service was in an office.
Dr. Shewczyk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1692024: 14117%
- Other services
- 2023: 492024: 6635%
Dr. Shewczyk compared with the Wisconsin median for family medicine physicians, 2024
- Dr. Shewczyk
- Wisconsin median
- Medicare services
- 207vs 28427% below
- Medicare patients
- 105vs 14126% below
- Part D claims
- 4,474vs 1,1064.0 times
Medians across 3,266 family medicine physicians in Wisconsin with Dmand AI profiles that report each measure.
Dr. Shewczyk'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.
Need commercial claims for Dr. Shewczyk?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shewczyk and other family medicine physicians in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark D. Shewczyk treated 105 Medicare patients in 2024, average age 72
CMS counts 105 Medicare patients who saw Dr. Shewczyk in 2024. The largest group is 65 to 74, with 49 patients. 74% of them have high blood pressure, and 71% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Shewczyk's median patient age at 67, with 37% women.
Dr. Shewczyk's Medicare patients by age, 2024
Dr. Shewczyk's Medicare patients by sex, 2024
- Women4846%
- Men5754%
Chronic conditions among Dr. Shewczyk's Medicare patients, 2024
- High blood pressure74%
- High cholesterol71%
- Arthritis41%
- Ischemic heart disease26%
- Diabetes25%
- Mood disorders25%
- Depression24%
- Chronic kidney disease22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shewczyk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women37%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark D. Shewczyk wrote 5,128 Medicare Part D claims in 2024
In 2024, Dr. Shewczyk wrote 5,128 Medicare Part D claims for 327 patients. 91% of them were for generic drugs. CMS names the drug for 4,474 of them, across 93 drugs with 11 or more claims each, at $208,116 in total drug cost. In 2023, CMS named 4,066 claims across 95 drugs.
Dr. Shewczyk's Part D claims by kind of drug, 2024
- Generic4,646 claims91%
- Brand-name458 claims9%
- Other24 claims0%
Dr. Shewczyk'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. Shewczyk's Part D claims, 2024
- Opioids4%185 of 5,128 claims
- Antibiotics2%97 of 5,128 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: 4,0662024: 4,47410%
Drugs named by CMS: 93 in 2024, 95 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Mark D. Shewczyk received $166 in industry payments from 2018 to 2024
CMS Open Payments shows 6 general payments to Dr. Shewczyk from 5 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 90% of the total. Merck Sharp & Dohme Corporation paid the most, $100.
General payments to Dr. Shewczyk by program year, 2018 to 2024
General payments to Dr. Shewczyk by kind, 2018 to 2024
- Food and beverage$14990%
- Education$1710%
Companies that paid Dr. Shewczyk the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark D. Shewczyk graduated from Un of California, Irvine, College of Medicine
Dr. Shewczyk graduated from Un of California, Irvine, College of Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark D. Shewczyk'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Mark D. Shewczyk
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. Mark D. Shewczyk's NPI number?
Dr. Mark D. Shewczyk's NPI number is 1609809672. It was assigned on July 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark D. Shewczyk?
Dr. Mark D. Shewczyk is a family medicine physician in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark D. Shewczyk practice?
Dr. Shewczyk practices at 2311 N Prospect Ave, Milwaukee, WI 53211. Dr. Shewczyk's primary practice is Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin. Dmand AI also links Dr. Shewczyk to 1 group practice or clinic.
What is Dr. Mark D. Shewczyk's office phone number?
The practice phone on file for Dr. Shewczyk is (414) 585-1000.
What is Dr. Mark D. Shewczyk's medical license number?
Dr. Shewczyk holds Wisconsin license 28080.
What medical group is Dr. Mark D. Shewczyk part of?
Dr. Shewczyk is linked to Ascension Columbia St. Mary's Hospital - Milwaukee Campus.
Does Dr. Mark D. Shewczyk accept Medicare?
Yes. CMS data shows Dr. Shewczyk billed Medicare for 207 services in 2024.
How many Medicare patients does Dr. Mark D. Shewczyk see?
CMS counts 105 Medicare patients who saw Dr. Shewczyk in 2024, with an average age of 72.
What services does Dr. Mark D. Shewczyk bill to Medicare?
In 2024, Dr. Shewczyk's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Where did Dr. Mark D. Shewczyk go to medical school?
Dr. Shewczyk graduated from Un of California, Irvine, College of Medicine in 1983.
Show 3 more questionsShow fewer questions
What drugs does Dr. Mark D. Shewczyk prescribe most?
In 2024 Medicare Part D data, Dr. Shewczyk's most prescribed drugs by claims were Rosuvastatin Calcium, Atorvastatin Calcium and Losartan Potassium.
Has Dr. Mark D. Shewczyk received payments from drug or device companies?
CMS Open Payments shows $166 in general payments to Dr. Shewczyk from 5 companies from 2018 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Mark D. Shewczyk been practicing?
Dr. Shewczyk graduated from medical school in 1983, 43 years ago.
Selling to family medicine practices?
See family medicine physicians in Wisconsin by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card