Walter M. O'Brien, MD
Urology Physician · Leesburg, VA
Walter M. O'Brien, MD is a urology physician with a practice address in Leesburg, Virginia, and NPI 1730173360, issued on Sep 9, 2005. Check the license (Virginia 0101038671, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Walter M. O'Brien
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License number
- 0101038671 VA
Self-reported in NPPES; status is on the state search - Practice location
- 19415 Deerfield Avenue, Suite 112, Leesburg, VA 20176
- Phone
- (703) 724-1195
- Enumerated
- Sep 9, 2005
- Record last updated
- Jan 10, 2024
- Fax
- (703) 724-4495
- Medicaid IDs
- 1730173360 VA
7503300 VA
7503326 VA - Entity
- Type 1 · individual
8 nearest urology physician records → All 359 in Virginia → Look up another NPI →
Also registered at 19415 Deerfield Avenue, Suite 112
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kinnari KennedyUrology Physician1952763435
- Kyle Lester, D.O.Urology Physician1225441660
- Jennifer Mendrysa, FNP-CFamily Nurse Practitioner1982076899
- John Pahira, MDUrology Physician1780672758
- Joanna Potterfield, FNPFamily Nurse Practitioner1649855016
- Chuck Pruna, D.O.Urology Physician1407049265
Verify Walter M. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101038671Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 92.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Walter M. O'Brien among 359 urology physician records in Virginia
Walter M. O'Brien, MD is one of 359 urology physician records with a practice address in Virginia. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208800000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in Virginia
There are 359 urology physician records in Virginia.
All 359 in Virginia → Every provider in Leesburg → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Kinnari KennedyLeesburg, VA 201761952763435
- Kyle Lester, D.O.Leesburg, VA 201761225441660
- Ross Liao, MDLeesburg, VA 201761053828020
- Kevin O'Connor, MDLeesburg, VA 201761730173279
- John Pahira, MDLeesburg, VA 201761780672758
- Chuck Pruna, D.O.Leesburg, VA 201761407049265
- Nathan Roberts, M.D.Lansdowne, VA 201761942526165
- Gregory Schenk, MDLeesburg, VA 201761649264185
Common questions
What is Walter M. O'Brien, MD's NPI number?
Walter M. O'Brien, MD's National Provider Identifier (NPI) is 1730173360, issued on Sep 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Walter M. O'Brien, MD located?
The NPPES record lists a practice address at 19415 Deerfield Avenue, Suite 112, Leesburg, VA, 20176. Phone: (703) 724-1195. Providers update this record themselves, so call before visiting.
How can I verify Walter M. O'Brien, MD's license?
NPPES lists Virginia license number 0101038671, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Walter M. O'Brien, MD's MIPS final score?
The 2023 MIPS final score is 92.6 of 100. 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.