Dr. John Preston Marshall , DDS
Dentist - General Practice • Sheridan, MI
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. John Marshall has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Dr. John Marshall, DDS was a registered Dentist - General Practice practicing in Sheridan, MI. Throughout an active medical career spanning 19 years, Dr. Marshall provided care at the practice location at 215 CENTER ST until profile deactivation on 2025-12-25.
Practice Location & Contact Primary Location
215 Center St
Sheridan, MI 48884
Specialty Benchmarks & Practice Insights
Comparative analytics for Dentist - General Practice in Sheridan, MI
Practicing in Sheridan, MI (4360 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
NUCC Taxonomy Code: 1223G0001X
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Dentist
Doctor of Dental Medicine
Career & Practice History Timeline
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Record deactivated on December 25, 2025
NPI status registered as active in NPPES database
Registered at 215 CENTER ST, SHERIDAN, MI 48884 (Tel: 9892913302)
Registered at PO BOX 408, 215 CENTER ST, SHERIDAN, MI 48884 (Tel: 9892913302)
Recorded as JOHN MARSHALL, DDS
Dentist
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
Po Box 408, 215 Center St
Sheridan, MI 48884
Phone: 9892913302
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