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

MS. Nancy Lou Twitchel, APRN, BC, FNP, MSN

Individual provider Registered Nurse · NPI 1740229640

MS. Nancy Lou Twitchel, APRN, BC, FNP, MSN is a Registered Nurse in Washington, District of Columbia. Licensed in District of Columbia and Virginia. Registered with an NPI since 2006.

Licensed in
DC, VA
In the registry since
2006
Specialties on file
4
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
BC — Board Certified
Appended to another credential to show current board certification, as in APRN-BC.
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.

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Practice location Address checks out

1441 L St NW
Washington, DC 20230-0001
Phone: (202) 606-9911
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence RN66806 (DC)
Medical-Surgical Registered Nurse Taxonomy 163WM0705X · Licence 0001084328 (VA)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 0024165921 (VA)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence RN66806 (DC)

Record details

NPI number1740229640
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN , BC , FNP , MSN
Sole proprietorNo
NPI enumeratedJune 6, 2006
Last updated in NPPESJuly 13, 2026

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