Katharine Elizabeth Gellish, NP-C
Primary Care Nurse Practitioner · Littleton, CO
Katharine Elizabeth Gellish, NP-C is a primary care nurse practitioner with a practice address in Littleton, Colorado, and NPI 1083373633, issued on Dec 10, 2021. Check the license (Colorado APN.0996886-NP, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katharine Elizabeth Gellish
- Credential
- NP-C
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- APN.0996886-NP CO
Self-reported in NPPES; status is on the state search - Practice location
- 8246 W Bowles Ave Unit T, Littleton, CO 80123
- Phone
- (303) 800-0880
- Enumerated
- Dec 10, 2021
- Record last updated
- Apr 17, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20220301000091); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 194 in Colorado → Look up another NPI →
Also registered at 8246 W Bowles Ave Unit T
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Griffin, FNP-BCNurse Practitioner1770121980
Verify Katharine Elizabeth Gellish in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license APN.0996886-NPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average primary care nurse practitioner in 2024
5,665 Medicare Part D claims for 751 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 129 claims were for opioids.
Most prescribed
- Atorvastatin Calcium454 claims
- Levothyroxine Sodium301 claims
- Lisinopril271 claims
- Amlodipine Besylate241 claims
- Losartan Potassium173 claims
- Omeprazole171 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Iora Health Colorado, P.C.Arvada, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katharine Elizabeth Gellish among 194 primary care nurse practitioner records in Colorado
Katharine Elizabeth Gellish, NP-C is one of 194 primary care nurse practitioner records with a practice address in Colorado. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 63% of them.
- NPI issued2021 · 63% of these records are older, 29% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2019 · median 2019 among the 105 with a school on file
- Record last updated2025 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Colorado
There are 194 primary care nurse practitioner records in Colorado.
All 194 in Colorado → Every provider in Littleton → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Jocelyn Carver, NPLittleton, CO 801231144730326
- Rachel Deits, AGNPLittleton, CO 801201932996436
- Leah Jones, NPLittleton, CO 801201306241278
- Darcie Meierbachtol, NPLittleton, CO 801201558379883
- Elizabeth Sweeney, AGNP-PCLittleton, CO 801201558097162
- Laura Carlsen, NPLittleton, CO 801271255698510
- Boping Chen, NPLittleton, CO 801271477683225
- Jennifer Kahan, NURSE PRACTITIONERMonument, CO 801321134654916
Common questions
What is Katharine Elizabeth Gellish, NP-C's NPI number?
Katharine Elizabeth Gellish, NP-C's National Provider Identifier (NPI) is 1083373633, issued on Dec 10, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Katharine Elizabeth Gellish, NP-C located?
The NPPES record lists a practice address at 8246 W Bowles Ave Unit T, Littleton, CO, 80123. Phone: (303) 800-0880. Providers update this record themselves, so call before visiting.
How can I verify Katharine Elizabeth Gellish, NP-C's license?
NPPES lists Colorado license number APN.0996886-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Katharine Elizabeth Gellish, NP-C prescribe under Medicare Part D?
In 2024, Katharine Elizabeth Gellish, NP-C had 5,665 Medicare Part D claims for 751 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. Part D covers Medicare prescriptions 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.