Ksenia J. Merska, PA-C
Physician Assistant · Leesburg, VA
Ksenia J. Merska, PA-C is a physician assistant with a practice address in Leesburg, Virginia, and NPI 1316225170, issued on Jul 28, 2011. Check the license (Virginia 0110004718, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ksenia J. Merska
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 0110004718 VA
Self-reported in NPPES; status is on the state search - Practice location
- 44045 Riverside Pkwy, Leesburg, VA 20176
- Phone
- (703) 858-6044
- Enumerated
- Jul 28, 2011
- Record last updated
- Jun 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (703) 858-6775
- Medicare enrollment
- Enrolled (PECOS I20211130001722); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,408 in Virginia → Look up another NPI →
Also registered at 44045 Riverside Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Morgan Adams, FNP-CFamily Nurse Practitioner1861172546
- Khushal Afzal, M.DInternal Medicine Physician1932339595
- Katherine Aguilar, CSFASurgical Assistant1669324026
Verify Ksenia J. Merska in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0110004718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average physician assistant in 2024
282 Medicare Part D claims for 197 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Azithromycin32 claims
- Doxycycline Hyclate32 claims
- Cephalexin28 claims
- Amoxicillin-Clavulanate Potass25 claims
- Albuterol Sulfate Hfa20 claims
- Cefpodoxime Proxetil12 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): 90.1 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).
Bills Medicare through 2 group practices
- King County Public Hospital District NO 2Duvall, WA
- Vantage Radiology And Diagnostic Services, A Professional Services CorRenton, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ksenia J. Merska among 4,408 physician assistant records in Virginia
Ksenia J. Merska, PA-C is one of 4,408 physician assistant records with a practice address in Virginia. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 26% of them.
- NPI issued2011 · 26% of these records are older, 71% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2011 · median 2018 among the 2,885 with a school on file
- Record last updated2021 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
76 physician assistant records list a practice address in Leesburg
They are 76 of the 1,759 NPPES records with a practice address in Leesburg, and 4,408 physician assistant records in Virginia.
All 4,408 in Virginia → Every provider in Leesburg → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kathryn Cameron, PALeesburg, VA 201761700877081
- Hien Dinh-Choe, PALeesburg, VA 201761417031261
- Anushaya Fitzgerald, PACLeesburg, VA 201761376581645
- Michael Fraykor, PACLeesburg, VA 201761174677504
- Michele Gittings, PA CLeesburg, VA 201761235164641
- Christopher Luster, PA-CLeesburg, VA 201761598815060
- Fernando Mendez, PA CLeesburg, VA 201761891789426
- Stephanie Modzelesky, PA-CLeesburg, VA 201761417919408
Common questions
What is Ksenia J. Merska, PA-C's NPI number?
Ksenia J. Merska, PA-C's National Provider Identifier (NPI) is 1316225170, issued on Jul 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ksenia J. Merska, PA-C located?
The NPPES record lists a practice address at 44045 Riverside Pkwy, Leesburg, VA, 20176. Phone: (703) 858-6044. Providers update this record themselves, so call before visiting.
How can I verify Ksenia J. Merska, PA-C's license?
NPPES lists Virginia license number 0110004718, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Ksenia J. Merska, PA-C prescribe under Medicare Part D?
In 2024, Ksenia J. Merska, PA-C had 282 Medicare Part D claims for 197 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Ksenia J. Merska, PA-C's MIPS final score?
The 2023 MIPS final score is 90.1 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.