John B. Williamson, PHD
Clinical Neuropsychologist · Gainesville, FL
John B. Williamson, PHD is a clinical neuropsychologist with a practice address in Gainesville, Florida, and NPI 1215224977, issued on Jul 1, 2011. Check the license (Florida PY8262, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- John B. Williamson
- Credential
- PHD
- Primary taxonomy
- Clinical Neuropsychologist 103G00000X
- License number
- PY8262 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1600 SW Archer RD, Gainesville, FL 32610
- Phone
- (352) 265-0301
- Enumerated
- Jul 1, 2011
- Record last updated
- Jan 18, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120113000753); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical neuropsychologist records → All 372 in Florida → Look up another NPI →
Also registered at 1600 SW Archer RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patricia Abbitt, MDDiagnostic Radiology Physician1629040811
- Sherine AbdallaGastroenterology Physician1366862997
- Abdalla Abdelkader, MDCardiovascular Disease Physician1942087457
- Mahmoud AbdelsalamMedical Oncology Physician1912844531
- Garrett AbernathyStudent in an Organized Health Care Education/Training Program1215870894
- Emily Abernethy, MDFamily Medicine Physician1740970482
Verify John B. Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license PY8262Check 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 practice group's MIPS final score for 2023 (Medicare payment program): 83.4 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 one group practice
- Florida Health Professions Association IncGainesville, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John B. Williamson among 372 clinical neuropsychologist records in Florida
John B. Williamson, PHD is one of 372 clinical neuropsychologist records with a practice address in Florida. 33% 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 55% of them.
- NPI issued2011 · 55% of these records are older, 42% newer
- In a Medicare fileYes · 33% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2004 · median 2007 among the 166 with a school on file
- Record last updated2012 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103G00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Neuropsychologist providers in Florida
There are 372 clinical neuropsychologist records in Florida.
All 372 in Florida → Every provider in Gainesville → Clinical Neuropsychologist nationwide →
The 8 clinical neuropsychologist records with the nearest ZIP codes
- Franchesca Arias, PHDGainesville, FL 326101285275271
- Erika Cascio, PSY.D.Gainesville, FL 326101457702755
- Bruce Crosson, PHDGainesville, FL 326101366459398
- Jason DefeliceGainesville, FL 326101740118199
- Shellie-Anne Levy, PHDGainesville, FL 326101699299081
- Christopher Sozda, PH.D.Gainesville, FL 326081184004616
- Thomas Van Den Abell, PH.D.Gainesville, FL 326081982648945
- Jason Demery, PHDGainesville, FL 326061700077724
Common questions
What is John B. Williamson, PHD's NPI number?
John B. Williamson, PHD's National Provider Identifier (NPI) is 1215224977, issued on Jul 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is John B. Williamson, PHD located?
The NPPES record lists a practice address at 1600 SW Archer RD, Gainesville, FL, 32610. Phone: (352) 265-0301. Providers update this record themselves, so call before visiting.
How can I verify John B. Williamson, PHD's license?
NPPES lists Florida license number PY8262, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is John B. Williamson, PHD's MIPS final score?
The 2023 MIPS final score is 83.4 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.