Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Mallory Rose Holzer, PA

Individual provider Physician Assistant · NPI 1265399653

MS. Mallory Rose Holzer, PA is a Physician Assistant in Chesterfield, Missouri. Graduated from Saint Louis University School of Medicine in 2025, 1 year ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
1
Trained at
Saint Louis University School of Medicine
Licensed in
MO
In the registry since
2026
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

14532 S Outer 40 Rd Dept Orthopaedic Surgery Ste 200
Chesterfield, MO 63017-5705
Phone: (314) 514-3500
Fax: (314) 878-7678
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 2026005852 (MO)

Record details

NPI number1265399653
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA
Sole proprietorNo
NPI enumeratedJanuary 7, 2026
Last updated in NPPESMarch 17, 2026
Certification dateJanuary 7, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2025 (1 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Chesterfield