Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Drs Marc Lewis & Thomas Niederhelman LLC

Organization General Practice Dentistry · NPI 1518090661

Drs Marc Lewis & Thomas Niederhelman LLC provides General Practice Dentistry in Dayton, Ohio. Licensed in Ohio. Registered with an NPI since 2007.

Licensed in
OH
In the registry since
2007
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

8459 N Main St
Dayton, OH 45415-1379 Not confirmed with CMS for 18 years — call before visiting
Phone: (937) 890-1102
Fax: (937) 264-9550
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 21427 (OH)

Record details

NPI number1518090661
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Marc Lewis — President · (937) 890-1102
NPI enumeratedMarch 14, 2007
Last updated in NPPESMarch 3, 2008
Mailing address8459 N Main St, Dayton, OH 45415-1379

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