William P. Gianakopoulos, M.D.
Urology Physician · London, OH
William P. Gianakopoulos, M.D. is a urology physician with a practice address in London, Ohio, and NPI 1841239142, issued on Jun 5, 2006. Check the license (Ohio 35062534, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- William P. Gianakopoulos
- Credential
- M.D.
- Primary taxonomy
- Urology Physician 208800000X
- License number
- 35062534 OH
Self-reported in NPPES; status is on the state search - Practice location
- 210 N Main St, London, OH 43140
- Phone
- (740) 845-7700
- Enumerated
- Jun 5, 2006
- Record last updated
- Oct 16, 2024
- Fax
- (740) 845-7701
- Medicare enrollment
- Enrolled (PECOS I20040811000143); accepts Medicare assignment
- Medical or professional school
- Wright State University Boonshoft School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest urology physician records → All 531 in Ohio → Look up another NPI →
Also registered at 210 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Isteaq Ahmed, M.D.Family Medicine Physician1245525765
- Abdal Rahman Alhyari, MBBSHospitalist Physician1205051570
- Erica BarbariFamily Nurse Practitioner1275904708
- Janice BersoffClinical Social Worker1427049493
- Bradford Cotton, MDEmergency Medicine Physician1306803994
- Brian CummingsPhysical Therapist1033904529
Verify William P. Gianakopoulos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35062534Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% more Medicare Part D claims than the average urology physician in 2024
1,878 Medicare Part D claims for 484 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 18 claims were for opioids.
Most prescribed
- Finasteride500 claims
- Tamsulosin Hcl363 claims
- Prednisone182 claims
- Abiraterone Acetate112 claims
- Xtandi82 claims
- Erleada77 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $647.31
26 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 9,340 providers of this specialty with any payment received $3,800.04 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
- Central Ohio Urology Group, LLC.Pickerington, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William P. Gianakopoulos among 531 urology physician records in Ohio
William P. Gianakopoulos, M.D. is one of 531 urology physician records with a practice address in Ohio. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 50% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1987 · median 2003 among the 352 with a school on file
- Record last updated2024 · 59% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in Ohio
There are 531 urology physician records in Ohio.
All 531 in Ohio → Every provider in London → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Frederick Taylor, MDLondon, OH 431401558527192
- Jason Jankowski, M.D.Pickerington, OH 431471053512822
- Brian Meyerson, MDPickerington, OH 431471366902132
- William Batten, MDLancaster, OH 431301437124112
- Pradeep Pandya, M.D.Lancaster, OH 431301396721486
- Fara Bellows, MDCircleville, OH 431131083935118
- Ronney Abaza, M.D.Worthington, OH 430851134173339
- William Bloch, M.D.Worthington, OH 430851023013505
Common questions
What is William P. Gianakopoulos, M.D.'s NPI number?
William P. Gianakopoulos, M.D.'s National Provider Identifier (NPI) is 1841239142, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William P. Gianakopoulos, M.D. located?
The NPPES record lists a practice address at 210 N Main St, London, OH, 43140. Phone: (740) 845-7700. Providers update this record themselves, so call before visiting.
How can I verify William P. Gianakopoulos, M.D.'s license?
NPPES lists Ohio license number 35062534, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William P. Gianakopoulos, M.D. prescribe under Medicare Part D?
In 2024, William P. Gianakopoulos, M.D. had 1,878 Medicare Part D claims for 484 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
What is William P. Gianakopoulos, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.