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

Dr. Sean Patrick Duffy, DO

Individual provider Internal Medicine Physician · NPI 1033371752

Dr. Sean Patrick Duffy, DO is an Internal Medicine Physician in Arnold, Maryland. Practices as a sole proprietor. Licensed in Maryland and Virginia.

Licensed in
MD, VA
In the registry since
2008
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

273 Peninsula Farm Rd Ste D
Arnold, MD 21012-1012
Phone: (410) 699-9692
Fax: (443) 392-3332
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence H0087213 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0102204216 (VA)

Record details

NPI number1033371752
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJune 25, 2008
Last updated in NPPESJanuary 13, 2026
Certification dateJanuary 13, 2026
Mailing address273 Peninsula Farm Rd Ste D, Arnold, MD 21012-1012

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