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

Dr. Mark William Hartzler, DMD

Individual provider General Practice Dentistry · NPI 1215287271

Dr. Mark William Hartzler, DMD is a General Practice Dentistry in Gorham, New Hampshire. Licensed in Massachusetts and New Hampshire. Registered with an NPI since 2012.

Licensed in
MA, NH
In the registry since
2012
Specialties on file
2
What do these letters mean?
DMD — Doctor of Dental Medicine
A dentist. Identical training and licensing to a DDS.

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Practice location Address checks out

22 Exchange St
Gorham, NH 03581-1604
Phone: (603) 466-5015
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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 03961 (NH)
General Practice Dentistry Taxonomy 1223G0001X · Licence DN1856094 (MA)

Record details

NPI number1215287271
Entity typeIndividual (Type 1)
GenderMale
Credentials DMD
Sole proprietorNo
NPI enumeratedSeptember 17, 2012
Last updated in NPPESJanuary 3, 2013
Mailing address119 West St, Reading, MA 01867-3317

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