Katherine Marie Holzem, MD
Vascular Surgery Physician · Saint Louis, MO
Katherine Marie Holzem, MD is a vascular surgery physician with a practice address in Saint Louis, Missouri, and NPI 1861912529, issued on Jun 23, 2017. Check the license (Missouri 2022038986, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Katherine Marie Holzem
- Credential
- MD
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- 2022038986 MO
Self-reported in NPPES; status is on the state search - Practice location
- 915 N Grand Blvd, Saint Louis, MO 63106
- Phone
- (314) 652-4100
- Enumerated
- Jun 23, 2017
- Record last updated
- Sep 15, 2025
- Medicaid ID
- 200062938 MO
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 101 in Missouri → Look up another NPI →
Also registered at 915 N Grand Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nagla Abdelmalek, M.D.Emergency Medicine Physician1003847591
- Stephanie AdamsRegistered Nurse1003755810
- Jessica Addai, RNRegistered Nurse1225475171
- Bernadette Addison-TannerCase Management Registered Nurse1750143566
- Oluwafunmilayo Adebayo-Adonis, MDCritical Care Medicine (Anesthesiology) Physician1437593613
- Oluwatoyin Adegboyega, FNPFamily Nurse Practitioner1932724614
Verify Katherine Marie Holzem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2022038986Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average vascular surgery physician in 2024
60 Medicare Part D claims for 25 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel14 claims
- Cilostazol13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $77.13
3 payments; by number, the most common kind was food and beverage; the largest payer was ShockWave Medical, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Katherine Marie Holzem among 101 vascular surgery physician records in Missouri
Katherine Marie Holzem, MD is one of 101 vascular surgery physician records with a practice address in Missouri. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 85% of them.
- NPI issued2017 · 85% of these records are older, 11% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2025 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in Missouri
There are 101 vascular surgery physician records in Missouri.
All 101 in Missouri → Every provider in Saint Louis → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Justin D'Addario, MDSaint Louis, MO 631041477059772
- David Ebertz, MDSaint Louis, MO 631041497215818
- Khanjan Nagarsheth, MDSaint Louis, MO 631041275789430
- Pavitra Ravishankar, MDSaint Louis, MO 631041669121448
- Matthew Smeds, MDSaint Louis, MO 631041003067240
- Brianna Whithorn, DOSaint Louis, MO 631041568923332
- Michael Williams, M.D.Saint Louis, MO 631041750544011
- Catherine Wittgen, MDSaint Louis, MO 631041184728305
Common questions
What is Katherine Marie Holzem, MD's NPI number?
Katherine Marie Holzem, MD's National Provider Identifier (NPI) is 1861912529, issued on Jun 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Marie Holzem, MD located?
The NPPES record lists a practice address at 915 N Grand Blvd, Saint Louis, MO, 63106. Phone: (314) 652-4100. Providers update this record themselves, so call before visiting.
How can I verify Katherine Marie Holzem, MD's license?
NPPES lists Missouri license number 2022038986, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Marie Holzem, MD prescribe under Medicare Part D?
In 2024, Katherine Marie Holzem, MD had 60 Medicare Part D claims for 25 beneficiaries; the average among vascular surgery physician prescribers was 201. Part D covers Medicare prescriptions only.
What is Katherine Marie Holzem, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.