Karen E. Ellis, FNP
Nurse Practitioner · Tempe, AZ
Karen E. Ellis, FNP is a nurse practitioner with a practice address in Tempe, Arizona, and NPI 1679237846, issued on Oct 25, 2021. Check the license (Arizona 251769, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen E. Ellis
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 251769 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 2520 S Plaza Dr Apt 4001, Tempe, AZ 85282
- Phone
- (480) 577-7313
- Enumerated
- Oct 25, 2021
- Record last updated
- Oct 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,423 in Arizona → Look up another NPI →
Verify Karen E. Ellis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 251769Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average nurse practitioner in 2024
192 Medicare Part D claims for 73 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Prednisone27 claims
- Azithromycin20 claims
- Albuterol Sulfate Hfa19 claims
- Amoxicillin-Clavulanate Potass14 claims
- Cephalexin11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 35.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Karen E. Ellis among 1,423 nurse practitioner records in Arizona
Karen E. Ellis, FNP is one of 1,423 nurse practitioner records with a practice address in Arizona. 74% 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 66% of them.
- NPI issued2021 · 66% of these records are older, 26% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2021 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in Arizona
There are 1,423 nurse practitioner records in Arizona.
All 1,423 in Arizona → Every provider in Tempe → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Willie Ballou, NP-CTempe, AZ 852821548657802
- Lisa Bury, FNPTempe, AZ 852821902735608
- Deborah Cooney, C.N.P.Tempe, AZ 852821780965897
- Kevin Crawford, PA, NPTempe, AZ 852821780961862
- Janine DukuzeTempe, AZ 852821396160354
- Theresa Jacobsen, NPTempe, AZ 852821689667883
- Karlyn Kohler, NPTempe, AZ 852821912607581
- Kim Nguyen, FNP-BCTempe, AZ 852821508540642
Common questions
What is Karen E. Ellis, FNP's NPI number?
Karen E. Ellis, FNP's National Provider Identifier (NPI) is 1679237846, issued on Oct 25, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Karen E. Ellis, FNP located?
The NPPES record lists a practice address at 2520 S Plaza Dr Apt 4001, Tempe, AZ, 85282. Phone: (480) 577-7313. Providers update this record themselves, so call before visiting.
How can I verify Karen E. Ellis, FNP's license?
NPPES lists Arizona license number 251769, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Karen E. Ellis, FNP prescribe under Medicare Part D?
In 2024, Karen E. Ellis, FNP had 192 Medicare Part D claims for 73 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Karen E. Ellis, FNP's MIPS final score?
The 2023 MIPS final score is 35.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.