NPPES file of Aug 9, 2026

Gwen Jessica Jackson Kellogg, FNP

Family Nurse Practitioner · Denver, CO

Gwen Jessica Jackson Kellogg, FNP is a family nurse practitioner with a practice address in Denver, Colorado, and NPI 1558107136, issued on Jul 3, 2024. Check the license (Colorado APN.0999918-NP, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558107136
Name
Gwen Jessica Jackson Kellogg
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
APN.0999918-NP CO
Self-reported in NPPES; status is on the state search
Practice location
1818 N Ogden St Ste 400, Denver, CO 80218
Phone
(303) 381-1991
Enumerated
Jul 3, 2024
Record last updated
Jul 3, 2024
Medicare enrollment
Enrolled (PECOS I20240909004507); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1818 N Ogden St Ste 400

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jessica Bahr, PA-CPhysician Assistant1285223008
  2. Jess Joymon, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1598916405

Verify Gwen Jessica Jackson Kellogg in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license APN.0999918-NP
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Colorado license search

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Industry payments in 2024: $272.65

5 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gwen Kellogg$272.65
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Intermountain Medical Group Denver LLCDenver, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gwen Jessica Jackson Kellogg among 3,492 family nurse practitioner records in Colorado

Gwen Jessica Jackson Kellogg, FNP is one of 3,492 family nurse practitioner records with a practice address in Colorado. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 85% of them.

  • NPI issued2024 · 85% of these records are older, 8% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2024 · median 2019 among the 1,950 with a school on file
  • Record last updated2024 · 37% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

484 family nurse practitioner records list a practice address in Denver

They are 484 of the 25,068 NPPES records with a practice address in Denver, and 3,492 family nurse practitioner records in Colorado.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Tammi Backer, FNPDenver, CO 802181932419892
  2. Jennifer Brown, FNPDenver, CO 802181497874051
  3. Emily Carman, FNP-BCDenver, CO 802181548649973
  4. Diane Chase, NPDenver, CO 802181114227162
  5. Sarah Collopy, FNPDenver, CO 802181467961508
  6. Cathy Duncan, FNPDenver, CO 802181437234184
  7. Kellie Faber, FNP-CDenver, CO 802181811260078
  8. Stephanie KaskavitchDenver, CO 802181154867216

Common questions

What is Gwen Jessica Jackson Kellogg, FNP's NPI number?

Gwen Jessica Jackson Kellogg, FNP's National Provider Identifier (NPI) is 1558107136, issued on Jul 3, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Gwen Jessica Jackson Kellogg, FNP located?

The NPPES record lists a practice address at 1818 N Ogden St Ste 400, Denver, CO, 80218. Phone: (303) 381-1991. Providers update this record themselves, so call before visiting.

How can I verify Gwen Jessica Jackson Kellogg, FNP's license?

NPPES lists Colorado license number APN.0999918-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.