Kristy L. Diffley, NURSE PRACTITIONER
Family Nurse Practitioner · Manassas, VA
Kristy L. Diffley, NURSE PRACTITIONER is a family nurse practitioner with a practice address in Manassas, Virginia, and NPI 1154828150, issued on Apr 7, 2018. Check the license (Virginia 0024176464, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kristy L. Diffley
- Credential
- NURSE PRACTITIONER
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 0024176464 VA
Self-reported in NPPES; status is on the state search - Practice location
- 8640 Sudley RD Ste 302, Manassas, VA 20110
- Phone
- (703) 369-5959
- Enumerated
- Apr 7, 2018
- Record last updated
- Sep 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20190110003495); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 6,474 in Virginia → Look up another NPI →
Also registered at 8640 Sudley RD Ste 302
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sarah Duncan, RN, CCRNAcute Care Nurse Practitioner1306134218
- Bhisham Harchandani, M.D.Interventional Cardiology Physician1417341850
Verify Kristy L. Diffley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0024176464Check 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% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,268 Medicare Part D claims for 311 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Metoprolol Succinate144 claims
- Atorvastatin Calcium91 claims
- Furosemide91 claims
- Amlodipine Besylate84 claims
- Eliquis72 claims
- Losartan Potassium69 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.
Industry payments in 2024: $688.70
26 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Uva Community Health Medical Group LLCManassas, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kristy L. Diffley among 6,474 family nurse practitioner records in Virginia
Kristy L. Diffley, NURSE PRACTITIONER is one of 6,474 family nurse practitioner records with a practice address in Virginia. 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 2018, is newer than 48% of them.
- NPI issued2018 · 48% of these records are older, 45% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2019 among the 3,833 with a school on file
- Record last updated2025 · 40% 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 Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
88 family nurse practitioner records list a practice address in Manassas
They are 88 of the 2,327 NPPES records with a practice address in Manassas, and 6,474 family nurse practitioner records in Virginia.
All 6,474 in Virginia → Every provider in Manassas → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Judy Corcoran, C.F.N.P.Manassas, VA 201101326161134
- Flaviano Dazo, F.N.P-CManassas, VA 201101720157829
- Chizimako Eze, NPManassas, VA 201101801062229
- M Finley-Harrier, FNPManassas, VA 201101194851758
- Norman Jacobowitz, MSN, RN-BC, NP-CManassas, VA 201101265746317
- Barbara Kimmer-Lynch, FNPManassas, VA 201101952352114
- Julie Kulp, NURSE PRACTITIONERManassas, VA 201101386928539
- Rose Laguardia, FNPManassas, VA 201101598067324
Common questions
What is Kristy L. Diffley, NURSE PRACTITIONER's NPI number?
Kristy L. Diffley, NURSE PRACTITIONER's National Provider Identifier (NPI) is 1154828150, issued on Apr 7, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Kristy L. Diffley, NURSE PRACTITIONER located?
The NPPES record lists a practice address at 8640 Sudley RD Ste 302, Manassas, VA, 20110. Phone: (703) 369-5959. Providers update this record themselves, so call before visiting.
How can I verify Kristy L. Diffley, NURSE PRACTITIONER's license?
NPPES lists Virginia license number 0024176464, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Kristy L. Diffley, NURSE PRACTITIONER prescribe under Medicare Part D?
In 2024, Kristy L. Diffley, NURSE PRACTITIONER had 1,268 Medicare Part D claims for 311 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.