Gwen Kellogg, FNP
NPI 1558107136 · Family Nurse Practitioner · Denver, CO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gwen Kellogg, FNP is a Family Nurse Practitioner provider in Denver, CO (NPI 1558107136).
Provider details
- NPI number
- 1558107136
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- APN.0999918-NP (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 tenure33% of score
1 yr in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$273 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-07-03
- Last updated
- 2024-07-03
- Certified
- 2024-07-03
Frequently asked questions
- What is Gwen Kellogg's NPI number?
- Gwen Kellogg's National Provider Identifier (NPI) is 1558107136, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gwen Kellogg's specialty?
- Gwen Kellogg is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gwen Kellogg located?
- Gwen Kellogg's practice location on file with NPPES is 1818 N Ogden St Ste 400, Denver, CO 80218-1280.
- What is Gwen Kellogg's phone number?
- The practice phone number listed in the NPPES registry for Gwen Kellogg is (303) 381-1991.
- Does Gwen Kellogg accept Medicare?
- Gwen Kellogg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gwen Kellogg's NPI active?
- Yes — Gwen Kellogg's NPI (1558107136) is active in the NPPES registry as of the last update on 2024-07-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.