Jose Valentin Diaz, D.O.
Surgery Physician · West Islip, NY
Jose Valentin Diaz, D.O. is a surgery physician with a practice address in West Islip, New York, and NPI 1740564533, issued on Sep 28, 2011. Check the license (New York 294195, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Jose Valentin Diaz
- Credential
- D.O.
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- 294195 NY
LT18018 ME
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Montauk Hwy, West Islip, NY 11795
- Phone
- (631) 465-6343
- Enumerated
- Sep 28, 2011
- Record last updated
- Aug 23, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180907001019); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1000 Montauk Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rashad Abdallah, DOStudent in an Organized Health Care Education/Training Program1356194070
- Almothana Aburumman, MDStudent in an Organized Health Care Education/Training Program1669267506
- Hakeem Afuwape, DODiagnostic Radiology Physician1326292806
- Samantha Ahearn, PA-CPhysician Assistant1952279572
- Michele Ahlers, NURSE PRACTITIONERAdult Health Nurse Practitioner1063037869
- Fahim Ahmed, D.O.Emergency Medicine Physician1619904372
Verify Jose Valentin Diaz 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 294195Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $29.14
2 payments; by number, the most common kind was food and beverage; the largest payer was Cumberland Pharmaceuticals, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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 2 group practices
- Chs Physician Partners PCRoslyn, NY
- Samaritan Emergency Medical Services PCWest Islip, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
16 surgery physician records list a practice address in West Islip
They are 16 of the 1,107 NPPES records with a practice address in West Islip, and 2,053 surgery physician records in New York.
All 16 in West Islip → All 2,053 in New York → Every provider in West Islip →
Other surgery physician records in New York
- Ayman Abadeer, MDBrooklyn, NY1619268869
- Ahmad Abdelaal, MDBronx, NY1255880738
- Hossam Abdou, M.D.New York, NY1093247975
- Alexander Abdurakhmanov, MDBrooklyn, NY1538556196
- Deborah Abeles, M.D.Garden City, NY1063528925
- Sara Abou Azar, M.D.Buffalo, NY1689103541
- Georges Abou-Eid, M.D.Roslyn, NY1518017425
- Ziad Abouezzi, MDPoughkeepsie, NY1831178284
- Mohamad Abouzeid, M.D.Port Jefferson, NY1144464421
- Frederick Achildiev, MDBay Shore, NY1740467737
Common questions
What is Jose Valentin Diaz, D.O.'s NPI number?
Jose Valentin Diaz, D.O.'s National Provider Identifier (NPI) is 1740564533, issued on Sep 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Jose Valentin Diaz, D.O. located?
The NPPES record lists a practice address at 1000 Montauk Hwy, West Islip, NY, 11795. Phone: (631) 465-6343. Providers update this record themselves, so call before visiting.
How can I verify Jose Valentin Diaz, D.O.'s license?
NPPES lists New York license number 294195, 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.
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.