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

Dr. John Charles Knowlton, DDS

Individual provider General Practice Dentistry · NPI 1730167727

Dr. John Charles Knowlton, DDS is a General Practice Dentistry in Lexington Park, Maryland. Licensed in Maryland. Registered with an NPI since 2006.

Licensed in
MD
In the registry since
2006
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Address checks out

22335 Exploration Dr Ste 1010
Lexington Park, MD 20653-2014
Phone: (301) 862-2118
Fax: (301) 862-2351
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence MD5120 (MD)

Record details

NPI number1730167727
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJanuary 9, 2006
Last updated in NPPESJuly 13, 2026
Mailing address22335 Exploration Dr, Suite 1010, Lexington Park, MD 20653-2014

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