Kenneth G. Halliwell, M.D.
Neurology Physician · Williamsville, NY
Kenneth G. Halliwell, M.D. is a neurology physician with a practice address in Williamsville, New York, and NPI 1639338429, issued on Jun 5, 2008. Check the license (New York 248880, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Kenneth G. Halliwell
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 248880 NY
Self-reported in NPPES; status is on the state search - Practice location
- 325 Essjay RD, Williamsville, NY 14221
- Phone
- (716) 630-1122
- Enumerated
- Jun 5, 2008
- Record last updated
- Feb 28, 2022
- Fax
- (716) 250-5924
- Medicare enrollment
- Enrolled (PECOS I20080815000508); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 1,778 in New York → Look up another NPI →
Also registered at 325 Essjay RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fatma Al Bayitee, MDFamily Medicine Physician1932747391
- Manju Alex, MDNephrology Physician1063613719
- Elizabeth Alvarado, LCSWClinical Social Worker1073253704
- Ralph Argen, MDRheumatology Physician1710944590
- Josephine Arnone, NPFamily Nurse Practitioner1437878113
- Alyssa Attardo, PA-CPhysician Assistant1144156613
Verify Kenneth G. Halliwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 248880Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average neurology physician in 2024
178 Medicare Part D claims for 34 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Zolpidem Tartrate27 claims
- Zaleplon19 claims
- Modafinil16 claims
- Dextroamphetamine-Amphetamine13 claims
- Clonidine Hcl12 claims
- Xyrem12 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: $33,426.35
86 payments; by number, the most common kind was food and beverage; the largest payer was Avadel Cns Pharmaceuticals, LLC. The 10,858 providers of this specialty with any payment received $8,318.07 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
- Buffalo Medical Group, P.C.Williamsville, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kenneth G. Halliwell among 1,778 neurology physician records in New York
Kenneth G. Halliwell, M.D. is one of 1,778 neurology physician records with a practice address in New York. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 38% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2003 · median 2004 among the 1,238 with a school on file
- Record last updated2022 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in New York
There are 1,778 neurology physician records in New York.
All 1,778 in New York → Every provider in Williamsville → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Ashley Alex, M.D.Williamsville, NY 142211295198331
- Svetlana Blitshteyn, M.D.Williamsville, NY 142211528041829
- Michael Giglio, MDWilliamsville, NY 142211770780850
- Eugene GosyWilliamsville, NY 142211134171697
- David Lichter, MDWilliamsville, NY 142211265408934
- Michael Meyer, AD.Williamsville, NY 142211518933498
- Joseph Modica, MDBuffalo, NY 142211023545654
- Thomas Pfiffner, M.D.Buffalo, NY 142211477780054
Common questions
What is Kenneth G. Halliwell, M.D.'s NPI number?
Kenneth G. Halliwell, M.D.'s National Provider Identifier (NPI) is 1639338429, issued on Jun 5, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth G. Halliwell, M.D. located?
The NPPES record lists a practice address at 325 Essjay RD, Williamsville, NY, 14221. Phone: (716) 630-1122. Providers update this record themselves, so call before visiting.
How can I verify Kenneth G. Halliwell, M.D.'s license?
NPPES lists New York license number 248880, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kenneth G. Halliwell, M.D. prescribe under Medicare Part D?
In 2024, Kenneth G. Halliwell, M.D. had 178 Medicare Part D claims for 34 beneficiaries; the average among neurology physician prescribers was 1,370. 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.