Dr. Mark Robin Geier , MD
General Practice • Saint Peters, MO
Notice of NPI Deactivation & Inactive Practice Status
According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Dr. Mark Geier has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Dr. Mark Geier, MD was a registered General Practice practicing in Saint Peters, MO. Throughout an active medical career spanning 19 years, Dr. Geier provided care at the practice location at 4101 MEXICO RD until profile deactivation on 2025-05-08.
Practice Location & Contact Primary Location
4101 Mexico Rd
Suite H
Saint Peters, MO 633766414
Specialty Benchmarks & Practice Insights
Comparative analytics for General Practice in Saint Peters, MO
Practicing in Saint Peters, MO (221 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
General Practice
Doctor of Medicine (M.D.)
Dentist - Orthodontics and Dentofacial Orthopedics
Doctor of Dental Surgery, Master of Science
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Record deactivated on May 08, 2025
NPI status registered as active in NPPES database
Registered at 4101 MEXICO RD, SUITE H, SAINT PETERS, MO 633766414 (Tel: 6369224472)
Registered at 4101 MEXICO RD, SUITE H, SAINT PETERS, MO 633766414 (Tel: 6369224472)
Recorded as MARK GEIER, M.D.
General Practice (License #2009031842 in MO)
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
4101 Mexico Rd, Suite H
Saint Peters, MO 633766414
Phone: 6369224472
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