Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

MS. Shelby Marie Duffer, MS, CGC

Individual provider Genetic Counselor (M.S.) · NPI 1720078538

MS. Shelby Marie Duffer, MS, CGC is registered under Genetic Counselor (M.S.) in Fairfax, Virginia. Registered with an NPI since 2005.

In the registry since
2005
What do these letters mean?
MS — Master of Science
A graduate science degree.

See every abbreviation used in this directory →

Practice location Address checks out

3015 Williams Dr
Fairfax, VA 22031-4623
Phone: (703) 698-3916
Fax: (703) 698-1137
Show map & directions

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

Specialties & licences

Genetic Counselor (M.S.) (primary) Taxonomy 170300000X

Record details

NPI number1720078538
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , CGC
Sole proprietorNo
NPI enumeratedOctober 24, 2005
Last updated in NPPESJuly 13, 2026

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