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

Dr. Ann Lb Williams, MD

Individual provider Gastroenterology Physician · NPI 1265526164

Dr. Ann Lb Williams, MD is a Gastroenterology Physician in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2006.

Licensed in
DC
In the registry since
2006
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

1145 19th St NW Ste 313
Washington, DC 20036
Phone: (202) 466-4619
Fax: (202) 466-5773
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 5822 (DC)

Record details

NPI number1265526164
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 3, 2006
Last updated in NPPESJuly 8, 2007

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