Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Jose Valentin Diaz, DO

Individual provider Surgery Physician · NPI 1740564533

Dr. Jose Valentin Diaz, DO is registered under Critical Care (Intensivists) in West Islip, New York. Qualified in 2011, 15 years ago. Practices with Samaritan Emergency Medical Services PC, a 19-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Maine and New York.

Years since qualifying
15
Licensed in
ME, NY
In the registry since
2011
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1000 Montauk Hwy
West Islip, NY 11795
Phone: (631) 465-6343
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 163 Van Buren Rd, Caribou, ME 04736-3567 — (207) 493-3500
  • 1300 Roanoke Ave, Riverhead, NY 11901-2031 — (631) 548-6446

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence LT18018 (ME)
Surgery Physician Taxonomy 208600000X · Licence 294195 (NY)

Record details

NPI number1740564533
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedSeptember 28, 2011
Last updated in NPPESAugust 23, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Also practisesGENERAL SURGERY
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Samaritan Emergency Medical Services Pc — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients387
Services billed 724 a service is one billed item, such as a visit, a test or a procedure
Average patient age81

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Samaritan Emergency Medical Services PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 19 clinicians in the practice; 9 are shown here.

Other providers in West Islip