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

Dennis M Hannon, MD

Individual provider Adult Medicine Physician · NPI 1053314815

Dennis M Hannon, MD is an Adult Medicine Physician in Olney, Maryland. Licensed in Maryland. Registered with an NPI since 2005.

Licensed in
MD
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3300 Olney Sandy Spring Rd Ste 330
Olney, MD 20832-1494
Phone: (301) 774-7334
Fax: (301) 774-7311
Show map & directions

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

Specialties & licences

Adult Medicine Physician (primary) Taxonomy 207QA0505X · Licence D0023124 (MD)

Record details

NPI number1053314815
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2005
Last updated in NPPESFebruary 16, 2010

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