Kathryn Knill, CNP
Family Nurse Practitioner · Washington, DC
Kathryn Knill, CNP is a family nurse practitioner with a practice address in Washington, District of Columbia, and NPI 1326492042, issued on Apr 19, 2016. Check the license (District of Columbia NP500021867, as entered in NPPES) with the District of Columbia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathryn Knill
- Credential
- CNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- NP500021867 DC
RN500021867 DC
Self-reported in NPPES; status is on the state search - Practice location
- 3800 Reservoir RD NW, Washington, DC 20007
- Phone
- (202) 451-6882
- Enumerated
- Apr 19, 2016
- Record last updated
- Jul 30, 2026
- Fax
- (443) 537-9913
- Medicare enrollment
- Enrolled (PECOS I20250617000293); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 682 in District of Columbia → Look up another NPI →
Also registered at 3800 Reservoir RD NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kathryn Knill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich District of Columbia board licenses this profession
Search for license NP500021867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family nurse practitioner in 2024
100 Medicare Part D claims for 25 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
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
- Medstar Medical Group II LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathryn Knill among 682 family nurse practitioner records in District of Columbia
Kathryn Knill, CNP is one of 682 family nurse practitioner records with a practice address in District of Columbia. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 45% of them.
- NPI issued2016 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 46% of these records are
- Graduated2016 · median 2019 among the 311 with a school on file
- Record last updated2026 · 49% 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 District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
675 family nurse practitioner records list a practice address in Washington
They are 675 of the 45,857 NPPES records with a practice address in Washington, and 682 family nurse practitioner records in District of Columbia.
All 682 in District of Columbia → Every provider in Washington → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Margaret BassettWashington, DC 200071447499520
- Jason Beverley, MS, RN, FNP-BCWashington, DC 200071588953756
- Colleen Corcoran, NPWashington, DC 200071033492228
- Vashtina Ellison-Ruddock, FNPWashington, DC 200071699042523
- Courtney Gann, CRNP-FWashington, DC 200071801032305
- Bernard Hardeman, APRN, FNP-BCWashington, DC 200071033352901
- Erika Mitchell, FNPWashington, DC 200071962612655
- Dorothy Murphy, ARNPWashington, DC 200071922098821
Common questions
What is Kathryn Knill, CNP's NPI number?
Kathryn Knill, CNP's National Provider Identifier (NPI) is 1326492042, issued on Apr 19, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Knill, CNP located?
The NPPES record lists a practice address at 3800 Reservoir RD NW, Washington, DC, 20007. Phone: (202) 451-6882. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Knill, CNP's license?
NPPES lists District of Columbia license number NP500021867, as entered by the provider. Search the District of Columbia board that licenses this profession; the NPPES record confirms identity only.
How much does Kathryn Knill, CNP prescribe under Medicare Part D?
In 2024, Kathryn Knill, CNP had 100 Medicare Part D claims for 25 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.