Gay Ost, MSN, FNP-C
NPI 1912012899 · Family Nurse Practitioner · Denver, CO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gay Ost, MSN, FNP-C is a Family Nurse Practitioner provider in Denver, CO (NPI 1912012899).
Provider details
- NPI number
- 1912012899
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 167584 (CO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-20
- Last updated
- 2023-10-20
- Certified
- 2021-04-28
Frequently asked questions
- What is Gay Ost's NPI number?
- Gay Ost's National Provider Identifier (NPI) is 1912012899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gay Ost's specialty?
- Gay Ost is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gay Ost located?
- Gay Ost's practice location on file with NPPES is 625 S Clinton St Apt 14b, Denver, CO 80247-1580.
- What is Gay Ost's phone number?
- The practice phone number listed in the NPPES registry for Gay Ost is (303) 908-7421.
- Does Gay Ost accept Medicare?
- Gay Ost is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gay Ost's NPI active?
- Yes — Gay Ost's NPI (1912012899) is active in the NPPES registry as of the last update on 2023-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.