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

Mr. John Ruff, RN

Individual provider Registered Nurse · NPI 1144722125

Mr. John Ruff, RN is a Registered Nurse in Columbia, Maryland. Licensed in District of Columbia. Registered with an NPI since 2018.

Licensed in
DC
In the registry since
2018
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

10440 Little Patuxent Pkwy Ste 800
Columbia, MD 21044-3569
Phone: (667) 240-6169
Fax: (202) 379-4165
Show map & directions

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

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence RN103833 (DC)

Record details

NPI number1144722125
Entity typeIndividual (Type 1)
GenderMale
Credentials RN
Sole proprietorNo
NPI enumeratedMarch 6, 2018
Last updated in NPPESMarch 6, 2018
Mailing address10440 Little Patuxent Pkwy Ste 800, Columbia, MD 21044-3569

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