Amputation, SurgicalAnticoagulantsHeparin
Dr. Katherine Marie Holzem, MD
NPI1861912529
- Medicare services, 2024
- 46
- Medicare patients, 2024
- 59
- Part D claims, 2024
- 60
- Publications
- 15
- MIPS score, 2024
- 84
- Practice address
- 915 N Grand Blvd, Saint Louis, MO 63106
- Practice phone
- Call (913) 578-4409
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
VA St Louis Health Care System
Saint Louis, Missouri
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Dr. Katherine Marie Holzem is a vascular surgeon in Saint Louis, Missouri
Dr. Holzem practices at VA St Louis Health Care System in Saint Louis, Missouri.
Dr. Holzem's NPI, 1861912529, was assigned on June 23, 2017. Dr. Holzem graduated from Washington University School of Medicine in 2017. Dr. Holzem holds Missouri license 2022038986.
NPI and contact details
- NPI
- 1861912529NPI Registry (opens in a new tab)
- NPI enumeration date
- June 23, 2017
- NPI status
- Active
- Practice phone
- (913) 578-4409
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Katherine Marie Holzem practices at VA St Louis Health Care System in Saint Louis, Missouri
Dr. Holzem's primary practice is VA St Louis Health Care System, at 915 N Grand Blvd, Saint Louis, MO 63106 in Saint Louis City. The practice phone is (913) 578-4409.
- VA St Louis Health Care System915 N Grand Blvd, Saint Louis, MO 63106 · Saint Louis CityPhone(913) 578-4409
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Katherine Marie Holzem is affiliated with 2 sites of care and 1 medical group
Dr. Holzem's primary practice is VA St Louis Health Care System in Saint Louis, Missouri. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Holzem to 1 more group practice or clinic, named with a free account.
VA St Louis Health Care SystemPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Katherine Marie Holzem's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holzem practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| VA St Louis Health Care System | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katherine Marie Holzem is one of 88 vascular surgeons in Missouri
Vascular surgery is Dr. Holzem's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Holzem is licensed in Missouri.
Specialties and state licenses
- Vascular surgery, MissouriPrimary
Vascular surgeons near Dr. Holzem
Counts of vascular surgeons 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. Katherine Marie Holzem billed Medicare for 46 services in 2024
CMS data shows 46 Medicare services from Dr. Holzem across 3 procedure codes in 2024, all of them office visits, for 59 Medicare patients. Medicare paid $4,177 for them. Every service was in an office.
Medicare services, 202446
Medicare patients59
Paid by Medicare$4,177
Procedure codes3
Dr. Holzem's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 422024: 4610%
- Imaging
- 2023: 142024: 0100%
Dr. Holzem compared with the Missouri median for vascular surgeons, 2024
- Dr. Holzem
- Missouri median
- Medicare services
- 46vs 45890% below
- Medicare patients
- 59vs 30080% below
- Part D claims
- 27vs 8267% below
Medians across 89 vascular surgeons in Missouri with Dmand AI profiles that report each measure.
Dr. Holzem'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. Katherine Marie Holzem treated 59 Medicare patients in 2024, average age 70
CMS counts 59 Medicare patients who saw Dr. Holzem in 2024. The largest group is 65 to 74, with 24 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 3.12, 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. Holzem's median patient age at 71, with 38% women.
Medicare patients, 202459
Average age70
Average risk score3.12
Also on Medicaid22%
Dr. Holzem's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Holzem's Medicare patients by sex, 2024
- Women2237%
- Men3763%
Chronic conditions among Dr. Holzem's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes66%
- Arthritis56%
- Chronic kidney disease53%
- Ischemic heart disease44%
- Heart failure37%
- Atrial fibrillation36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Holzem'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
- Women38%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Katherine Marie Holzem wrote 60 Medicare Part D claims in 2024
In 2024, Dr. Holzem wrote 60 Medicare Part D claims for 25 patients. 97% of them were for generic drugs. CMS names the drug for 27 of them, across 2 drugs with 11 or more claims each, at $377 in total drug cost. In 2023, CMS named 41 claims across 3 drugs.
Part D claims, 202460
Drugs named by CMS2
Total drug cost$377
Part D patients25
Dr. Holzem's Part D claims by kind of drug, 2024
- Generic58 claims97%
- Brand-name and other2 claims3%
Dr. Holzem'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 412024: 2734%
Drugs named by CMS: 2 in 2024, 3 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. Katherine Marie Holzem scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Holzem for performance year 2024, reported as part of a group.
Dr. Holzem's MIPS scores, performance year 2024
- 84of 100Final score
- 71.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Katherine Marie Holzem has 15 publications on record
Dmand AI links 15 papers to Dr. Holzem, published from 2012 to 2023. 2014 was the busiest year, with 3. The most frequent topics are Action Potentials, Heart Failure and Heart Conduction System. Dr. Holzem has published most often in Am J Physiol Heart Circ Physiol. Dr. Holzem's most frequent co-authors are Eli Madden, Gregory A. Ewald, MD and Senthil Nathan Jayarajan, MD.
Papers15
Years published2012 to 2023
Dr. Holzem's papers by year, 2012 to 2023
Topics Dr. Holzem writes about most
- Action Potentials
- Heart Failure
- Heart Conduction System
- Arrhythmias, Cardiac
- Computer Simulation
- Electrophysiologic Techniques, Cardiac
- Heart
- Heart Ventricles
Dr. Holzem's most frequent co-authors
- Eli Madden3 shared papers
- Gregory A. Ewald, MD2 shared papers
- Senthil Nathan Jayarajan, MD2 shared papers
Recent publications by Dr. Holzem
J Vasc Surg Cases Innov Tech
See who Dr. Holzem researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Holzem works with, so you can find a warm path to the right vascular surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Katherine Marie Holzem received $4,976 in industry payments from 2017 to 2025
CMS Open Payments shows 74 general payments to Dr. Holzem from 12 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 66% of the total. Cardiovascular Systems Inc. paid the most, $1,127.
General payments to Dr. Holzem by program year, 2017 to 2025
General payments to Dr. Holzem by kind, 2017 to 2025
$5Kin total
- Food and beverage$3,27866%
- Travel and lodging$89618%
- Education$80216%
Companies that paid Dr. Holzem the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Katherine Marie Holzem graduated from Washington University School of Medicine
Dr. Holzem graduated from Washington University School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Katherine Marie Holzem'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Katherine Marie Holzem
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. Katherine Marie Holzem's NPI number?
Dr. Katherine Marie Holzem's NPI number is 1861912529. It was assigned on June 23, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine Marie Holzem?
Dr. Katherine Marie Holzem is a vascular surgeon in Saint Louis, Missouri. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Katherine Marie Holzem practice?
Dr. Holzem practices at 915 N Grand Blvd, Saint Louis, MO 63106. Dr. Holzem's primary practice is VA St Louis Health Care System in Saint Louis, Missouri. Dmand AI also links Dr. Holzem to 1 group practice or clinic.
What is Dr. Katherine Marie Holzem's office phone number?
The practice phone on file for Dr. Holzem is (913) 578-4409.
What is Dr. Katherine Marie Holzem's medical license number?
Dr. Holzem holds Missouri license 2022038986.
What medical group is Dr. Katherine Marie Holzem part of?
Dr. Holzem is linked to WashU Medicine Psychiatry.
Does Dr. Katherine Marie Holzem accept Medicare?
Yes. CMS data shows Dr. Holzem billed Medicare for 46 services in 2024.
What is Dr. Katherine Marie Holzem's MIPS score?
Dr. Holzem's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Katherine Marie Holzem see?
CMS counts 59 Medicare patients who saw Dr. Holzem in 2024, with an average age of 70.
What services does Dr. Katherine Marie Holzem bill to Medicare?
In 2024, Dr. Holzem's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and office visit, established patient (99213).
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Where did Dr. Katherine Marie Holzem go to medical school?
Dr. Holzem graduated from Washington University School of Medicine in 2017.
What drugs does Dr. Katherine Marie Holzem prescribe most?
In 2024 Medicare Part D data, Dr. Holzem's most prescribed drugs by claims were Clopidogrel and Cilostazol.
Has Dr. Katherine Marie Holzem received payments from drug or device companies?
CMS Open Payments shows $4,976 in general payments to Dr. Holzem from 12 companies from 2017 to 2025. The largest total came from Cardiovascular Systems Inc.
How long has Dr. Katherine Marie Holzem been practicing?
Dr. Holzem graduated from medical school in 2017, 9 years ago.
Does Dr. Katherine Marie Holzem do research?
Dmand AI links 15 publications to Dr. Holzem, published from 2012 to 2023.
Who does Dr. Katherine Marie Holzem publish with?
Dr. Holzem's most frequent co-authors are Eli Madden (3 shared papers), Gregory A. Ewald, MD (2 shared papers) and Senthil Nathan Jayarajan, MD (2 shared papers).
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