Katherine Warner, DNP, FNP-C
Family Nurse Practitioner · Plymouth, CT
Katherine Warner, DNP, FNP-C is a family nurse practitioner with a practice address in Plymouth, Connecticut, and NPI 1720841885, issued on Feb 1, 2024. Check the license (Connecticut 12846, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Warner
- Credential
- DNP, FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 12846 CT
Self-reported in NPPES; status is on the state search - Practice location
- 21 Jackson St, Plymouth, CT 06782
- Phone
- (203) 788-3632
- Enumerated
- Feb 1, 2024
- Record last updated
- Feb 1, 2024
- Medicare enrollment
- Enrolled (PECOS I20240430001788); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,669 in Connecticut → Look up another NPI →
Verify Katherine Warner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 12846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family nurse practitioner in 2024
197 Medicare Part D claims for 149 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone31 claims
- Albuterol Sulfate Hfa23 claims
- Amoxicillin-Clavulanate Potass21 claims
- Cephalexin15 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 2 group practices
- Emergency Physicians OF Connecticut PCDerby, CT
- Hartford Healthcare Urgent Care Centers LLCAvon, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Warner among 2,669 family nurse practitioner records in Connecticut
Katherine Warner, DNP, FNP-C is one of 2,669 family nurse practitioner records with a practice address in Connecticut. 76% 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 84% of them.
- NPI issued2024 · 84% of these records are older, 8% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2018 · median 2018 among the 1,664 with a school on file
- Record last updated2024 · 43% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 family nurse practitioner record lists a practice address in Plymouth
They are 1 of the 10 NPPES records with a practice address in Plymouth, and 2,669 family nurse practitioner records in Connecticut.
All 2,669 in Connecticut → Every provider in Plymouth → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Charles StaplesWatertown, CT 067791598122947
- Victoria TofieldOakville, CT 067791760924237
- Mark Cho, APRNTerryville, CT 067861205700689
- Gabriella Laferriere, DNP, FNPTerryville, CT 067861861266298
- Rebecca Roben, APRNTerryville, CT 067861053408963
- Thayer Clark, DNPThomaston, CT 067871477052157
- Siena Giordano, APRNThomaston, CT 067871124506043
- Alaina DicandidoNew Milford, CT 067761629893532
Common questions
What is Katherine Warner, DNP, FNP-C's NPI number?
Katherine Warner, DNP, FNP-C's National Provider Identifier (NPI) is 1720841885, issued on Feb 1, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Warner, DNP, FNP-C located?
The NPPES record lists a practice address at 21 Jackson St, Plymouth, CT, 06782. Phone: (203) 788-3632. Providers update this record themselves, so call before visiting.
How can I verify Katherine Warner, DNP, FNP-C's license?
NPPES lists Connecticut license number 12846, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Warner, DNP, FNP-C prescribe under Medicare Part D?
In 2024, Katherine Warner, DNP, FNP-C had 197 Medicare Part D claims for 149 beneficiaries; 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.