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

Gay Ann Ost, MSN, FNP-C

Individual provider Family Nurse Practitioner · NPI 1912012899

Gay Ann Ost, MSN, FNP-C is a Family Nurse Practitioner in Denver, Colorado. Licensed in Colorado. Registered with an NPI since 2006.

Licensed in
CO
In the registry since
2006
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
FNP-C — Family Nurse Practitioner, Certified
A family nurse practitioner certified by the AANP.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

625 S Clinton St Apt 14B
Denver, CO 80247-1580
Phone: (303) 908-7421
Fax: (720) 824-1750
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 167584 (CO)

Record details

NPI number1912012899
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , FNP-C
Sole proprietorNo
NPI enumeratedAugust 20, 2006
Last updated in NPPESOctober 20, 2023
Certification dateApril 28, 2021

Other providers in Denver