Dr. David S. Marks, MD
- Medicare services, 2024
- 222
- Medicare patients, 2024
- 149
- Part D claims, 2024
- 1,051
- Hospital affiliations
- 5
- Industry payments
- $20,934
- Practice address
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Practice phone
- Call (414) 805-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Marks' professional email, personal email and mobile number
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Dr. David S. Marks is an interventional cardiologist in Milwaukee, Wisconsin
Dr. Marks practices at Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health.
Dr. Marks' NPI, 1164460010, was assigned on June 3, 2006. Dr. Marks graduated from University of California, San Francisco School of Medicine in 1989. Dr. Marks holds Wisconsin license 42189.
- NPI
- 1164460010NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274421854
- NPI enumeration date
- June 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (414) 805-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David S. Marks practices at Froedtert Hospital in Milwaukee, Wisconsin
Dr. Marks' primary practice is Froedtert Hospital, at 9200 W Wisconsin Ave, Milwaukee, WI 53226 in Milwaukee County. The practice phone is (414) 805-3000.
- Froedtert Hospital9200 W Wisconsin Ave, Milwaukee, WI 53226 · Milwaukee CountyPhone(414) 805-3000
Source: Dmand AI Affiliation Data
Dr. David S. Marks is affiliated with 5 sites of care and 3 medical groups
Dr. Marks' primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health. Dr. Marks is also affiliated with Ascension Columbia St. Mary's Hospital - Milwaukee Campus. The medical group on file is Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI also links Dr. Marks to 3 more hospitals and 2 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. David S. Marks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marks practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Froedtert Hospital | Available with a free account |
| +4 more sites and 2 medical groups | 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 Froedtert ThedaCare Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David S. Marks is one of 120 interventional cardiologists in Wisconsin
Interventional cardiology is Dr. Marks' primary specialty in the NPI Registry, under taxonomy code 207RI0011X. Dr. Marks is licensed in Wisconsin.
Specialties and state licenses
- Interventional cardiology, WisconsinPrimary
Interventional cardiologists near Dr. Marks
Counts of interventional 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. David S. Marks billed Medicare for 222 services in 2024
CMS data shows 222 Medicare services from Dr. Marks across 7 procedure codes in 2024, for 149 Medicare patients. Medicare paid $11,382 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marks' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 932024: 912%
- Tests and treatments
- 2023: 542024: 7131%
- Other services
- 2023: 02024: 60
Dr. Marks compared with the Wisconsin median for interventional cardiologists, 2024
- Dr. Marks
- Wisconsin median
- Medicare services
- 222vs 1,28783% below
- Medicare patients
- 149vs 67278% below
- Part D claims
- 956vs 1,82047% below
Medians across 120 interventional cardiologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Marks' 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. David S. Marks treated 149 Medicare patients in 2024, average age 74
CMS counts 149 Medicare patients who saw Dr. Marks in 2024. The largest group is 65 to 74, with 65 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.68, 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. Marks' median patient age at 68, with 44% women.
Dr. Marks' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marks' Medicare patients by sex, 2024
- Women5537%
- Men9463%
Chronic conditions among Dr. Marks' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Heart failure46%
- Arthritis41%
- Chronic kidney disease39%
- Atrial fibrillation35%
- Diabetes33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David S. Marks wrote 1,051 Medicare Part D claims in 2024
In 2024, Dr. Marks wrote 1,051 Medicare Part D claims for 214 patients. 86% of them were for generic drugs. CMS names the drug for 956 of them, across 23 drugs with 11 or more claims each, at $169,153 in total drug cost. In 2023, CMS named 1,127 claims across 23 drugs.
Dr. Marks' Part D claims by kind of drug, 2024
- Generic899 claims86%
- Brand-name152 claims14%
Dr. Marks' 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1272024: 95615%
Drugs named by CMS: 23 in 2024, 23 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. David S. Marks offers telehealth to Medicare patients
Dr. Marks accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marks as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Coronary angioplasty and stenting: 1 to 10 procedures (CMS shows small counts as a range)
Pacemaker insertion or repair: 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. David S. Marks received $20,934 in industry payments from 2016 to 2025
CMS Open Payments shows 59 general payments to Dr. Marks from 11 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 88% of the total. Abbott Laboratories paid the most, $17,538.
General payments to Dr. Marks by program year, 2016 to 2025
General payments to Dr. Marks by kind, 2016 to 2025
- Consulting fees$18,32588%
- Travel and lodging$2,07910%
- Food and beverage$5303%
Companies that paid Dr. Marks 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. David S. Marks graduated from University of California, San Francisco School of Medicine
Dr. Marks graduated from University of California, San Francisco School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David S. Marks'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. David S. Marks
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. David S. Marks' NPI number?
Dr. David S. Marks' NPI number is 1164460010. It was assigned on June 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David S. Marks?
Dr. David S. Marks is an interventional cardiologist in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Interventional Cardiology Physician (taxonomy code 207RI0011X).
Where does Dr. David S. Marks practice?
Dr. Marks practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. Dr. Marks' primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health. Dmand AI also links Dr. Marks to 3 hospitals and 2 medical groups.
What is Dr. David S. Marks' office phone number?
The practice phone on file for Dr. Marks is (414) 805-3000.
What is Dr. David S. Marks' medical license number?
Dr. Marks holds Wisconsin license 42189.
Which hospitals is Dr. David S. Marks affiliated with?
Dr. Marks practices at Froedtert Hospital in Milwaukee, Wisconsin. Dr. Marks is also affiliated with Ascension Columbia St. Mary's Hospital - Milwaukee Campus. Dmand AI links Dr. Marks to 3 more hospitals.
What medical group is Dr. David S. Marks part of?
Dr. Marks is linked to Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI links Dr. Marks to 2 more medical groups.
Does Dr. David S. Marks accept Medicare?
Yes. CMS data shows Dr. Marks billed Medicare for 222 services in 2024, and Dr. Marks accepts Medicare assignment.
Does Dr. David S. Marks offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Marks as offering telehealth services.
How many Medicare patients does Dr. David S. Marks see?
CMS counts 149 Medicare patients who saw Dr. Marks in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. David S. Marks bill to Medicare?
In 2024, Dr. Marks' most billed Medicare services were medicare service (G2211), office visit, established patient (99213) and special service (99152).
Where did Dr. David S. Marks go to medical school?
Dr. Marks graduated from University of California, San Francisco School of Medicine in 1989.
What drugs does Dr. David S. Marks prescribe most?
In 2024 Medicare Part D data, Dr. Marks' most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Rosuvastatin Calcium.
Has Dr. David S. Marks received payments from drug or device companies?
CMS Open Payments shows $20,934 in general payments to Dr. Marks from 11 companies from 2016 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. David S. Marks been practicing?
Dr. Marks graduated from medical school in 1989, 37 years ago.
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