William B. Smithy, M.D.
Surgical Oncology Physician · East Setauket, NY
William B. Smithy, M.D. is a surgical oncology physician with a practice address in East Setauket, New York, and NPI 1235158155, issued on Jul 19, 2006. Check the license (New York 152575, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William B. Smithy
- Credential
- M.D.
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License number
- 152575 NY
Self-reported in NPPES; status is on the state search - Practice location
- 37 Research Way, East Setauket, NY 11733
- Phone
- (631) 444-4545
- Enumerated
- Jul 19, 2006
- Record last updated
- Oct 13, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 01083485 NY
- Medicare enrollment
- Enrolled (PECOS I20040407000878); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1981
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 209 in New York → Look up another NPI →
Also registered at 37 Research Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Payal AnandPediatric Endocrinology Physician1023218872
- Chelsey Boguslawski, MMS, PA-CPhysician Assistant1013739572
- Valerie Brunetti, D.P.M.Podiatrist1831118330
- Martyn Burk, M.D.Surgical Oncology Physician1629097001
- Amy Canterella, MS, RDN, CDNRegistered Dietitian1629476346
- Julie Cherian, M.D.Pediatric Rheumatology Physician1285891556
Verify William B. Smithy 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 152575Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average surgical oncology physician in 2024
20 Medicare Part D claims for 15 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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 MIPS final score for 2023 (Medicare payment program): 98.5 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).
Industry payments in 2024: $422.73
5 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 1,132 providers of this specialty with any payment received $4,224.74 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
- Stony Brook Surgical Associates University Faculty Practice CorporatiHampton Bays, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William B. Smithy among 209 surgical oncology physician records in New York
William B. Smithy, M.D. is one of 209 surgical oncology physician records with a practice address in New York. 74% 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, 66% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1981 · median 2004 among the 136 with a school on file
- Record last updated2014 · 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 2086X0206X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Oncology Physician providers in New York
There are 209 surgical oncology physician records in New York.
All 209 in New York → Every provider in East Setauket → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Martyn Burk, M.D.East Setauket, NY 117331629097001
- Brian O'Hea, M.D.East Setauket, NY 117331982623948
- Alexandra Capece, DOBay Shore, NY 117061598110728
- Gerardo Vitiello, M.D.Bay Shore, NY 117061194135848
- Jana Deitch, M.D.Smithtown, NY 117871033343702
- Sherif Abdel-Misih, M.D.Stony Brook, NY 117941255501250
- Marvin Corman, M.D.Stony Brook, NY 117941700808532
- Lukasz Czerwonka, M.D.Stony Brook, NY 117941841519329
Common questions
What is William B. Smithy, M.D.'s NPI number?
William B. Smithy, M.D.'s National Provider Identifier (NPI) is 1235158155, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William B. Smithy, M.D. located?
The NPPES record lists a practice address at 37 Research Way, East Setauket, NY, 11733. Phone: (631) 444-4545. Providers update this record themselves, so call before visiting.
How can I verify William B. Smithy, M.D.'s license?
NPPES lists New York license number 152575, 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 William B. Smithy, M.D. prescribe under Medicare Part D?
In 2024, William B. Smithy, M.D. had 20 Medicare Part D claims for 15 beneficiaries; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.
What is William B. Smithy, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.5 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.