Karin E. Keller, FNP
Family Nurse Practitioner · Denver, CO
Karin E. Keller, FNP is a family nurse practitioner with a practice address in Denver, Colorado, and NPI 1750402558, issued on Apr 2, 2007. Check the license (Colorado APN0002322, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karin E. Keller
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- APN0002322 CO
70200 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4200 E 9TH Ave, Denver, CO 80262
- Phone
- (303) 372-0617
- Enumerated
- Apr 2, 2007
- Record last updated
- Feb 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (303) 372-0669
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,492 in Colorado → Look up another NPI →
Also registered at 4200 E 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janet Beezley, RN-C, ANP, PNPNurse Practitioner1124131917
- Mandeep Brar, M.D.Specialist1427274315
- Harvey Causey, MDPsychiatry Physician1730276882
- James Christman, MDObstetrics & Gynecology Physician1255434106
- Adam Dave, M.D.Family Medicine Physician1770745325
- Andrew Dombro, MDInternal Medicine Physician1255421830
Verify Karin E. Keller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license APN0002322Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family nurse practitioner in 2024
12 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Karin E. Keller among 3,492 family nurse practitioner records in Colorado
Karin E. Keller, 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 2007, is newer than 9% of them.
- NPI issued2007 · 9% of these records are older, 86% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2018 · 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.
All 3,492 in Colorado → Every provider in Denver → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Patricia Gavan, FNPDenver, CO 802621851406128
- Ann Mancini, FNPDenver, CO 802621770538464
- Agatha Quinn, PHD, APRN, FNPDenver, CO 802621740287242
- Debra Roberge, FNPDenver, CO 802621194830075
- Sofi Abraham, N.P.Thornton, CO 802601578097200
- Amanda Black, FNP-BCThornton, CO 802601609251073
- Jennifer Fightmaster, FNP-BCNorthglenn, CO 802601376843623
- Jennifer Fischer, RN, APN, FNP-BCThornton, CO 802601023679628
Common questions
What is Karin E. Keller, FNP's NPI number?
Karin E. Keller, FNP's National Provider Identifier (NPI) is 1750402558, issued on Apr 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karin E. Keller, FNP located?
The NPPES record lists a practice address at 4200 E 9TH Ave, Denver, CO, 80262. Phone: (303) 372-0617. Providers update this record themselves, so call before visiting.
How can I verify Karin E. Keller, FNP's license?
NPPES lists Colorado license number APN0002322, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Karin E. Keller, FNP prescribe under Medicare Part D?
In 2024, Karin E. Keller, FNP had 12 Medicare Part D claims; the average among family nurse practitioner prescribers was 1,305. 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.