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DR. KATHERINE MARIE HOLZEM MD
NPI 1861912529
Surgery - Vascular Surgery in Saint Louis, MO

Active since June 23, 2017PECOS Enrolled
79.29/100
CMS Quality Rating
915 N GRAND BLVD, SAINT LOUIS, MO 63106(314) 652-4100 Get Directions Write a Review

NPPES record last updated: September 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 15, 2025, Apr 25, 2024, Apr 10, 2024 and 3 more (6 updates tracked since 2017).

About Dr. Katherine Marie Holzem Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KATHERINE MARIE HOLZEM MD (NPI 1861912529) is an individual vascular surgery provider in Saint Louis, Missouri, licensed in Missouri (2022038986) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS and maintains a secondary practice location in Saint Louis.

NPPES Registry Identity

NPI1861912529
Entity TypeIndividualFemale
Primary Taxonomy2086S0129X
Provider Legal NameDR. KATHERINE MARIE HOLZEMCredential: MD
Location Address915 N GRAND BLVDSaint Louis, MO 63106-1621
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 273-7373 · Fax (888) 840-6225
Phone(314) 652-4100
Sole ProprietorNo
Enumeration DateJune 23, 2017
Last NPPES UpdateSeptember 15, 20256 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2025
✔ NPI 1861912529 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0129X
License✔ Licensed in MO · 2022038986
Definition
A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.
Also ListedSurgeryTaxonomy 208600000X · License 2022038986 (MO)
915 N GRAND BLVD, Saint Louis, MO 63106
Open in Google Maps ↗

Secondary Practice Location 1

Location 11020 N Mason Rd, Div Surg Vascular, Ste 225Saint Louis, MO 63141-6666 · Phone (314) 273-7373 · Fax (888) 840-6225

Other Identifiers 1

Medicaid200062938MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Katherine Marie Holzem Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
24 services22 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
11 services11 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63106 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.29/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality71.46
Promoting Interoperability100
Improvement Activities40
Cost59.51

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MATTHEW CHRISTOPHER SIMPSON O.D.
Optometrist
915 N GRAND BLVD
SAINT LOUIS, MO 63106
St. Louis City (314) 652-4100
MS. CHARMIN MEYATTA GIBSON M.S.W.
Social Worker
915 N GRAND BLVD
SAINT LOUIS, MO 63106
St. Louis City (314) 652-4110
CONOR MCCARTNEY M.D.
Internal Medicine
915 N GRAND BLVD
SAINT LOUIS, MO 63106
St. Louis City (314) 652-4100
ALITA BILLOPS CNP
Nurse Practitioner (Primary Care)
915 N GRAND BLVD
SAINT LOUIS, MO 63106
St. Louis City (314) 652-4100
STEPHANIE ADAMS
Registered Nurse
915 N GRAND BLVD
SAINT LOUIS, MO 63106
St. Louis City (314) 289-7676
NAGLA ABDELMALEK M.D.
Emergency Medicine
915 N GRAND BLVD
SAINT LOUIS, MO 63106
St. Louis City (314) 652-4100
DR. JAMES MICHAEL HASIK DDS
Dentist (General Practice)
915 N GRAND BLVD, DENTAL CLINIC
SAINT LOUIS, MO 63106
St. Louis City (314) 652-4100
MS. TRACY LANES CRNA
Nurse Anesthetist, Certified Registered
915 N GRAND BLVD
SAINT LOUIS, MO 63106
St. Louis City (314) 652-4100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Holzem's NPI number?

The NPI number for Katherine Holzem is 1861912529. It was assigned to this individual provider in the NPPES registry on June 23, 2017.

Where is Katherine Holzem located?

Katherine Holzem practices at 915 N Grand Blvd, Saint Louis, MO 63106. The listed phone number is (314) 652-4100.

What is Katherine Holzem's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Is Katherine Holzem enrolled in Medicare?

Yes. Katherine Holzem is registered in the Medicare PECOS enrollment system.

What insurance does Katherine Holzem accept?

Health plans from Cox HealthPlans list Katherine Holzem as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Katherine Holzem was last updated on September 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.