Dr. Jose Valentin Diaz , DO
Surgery โข West Islip, NY
1000 Montauk Hwy
West Islip, NY 11795
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on September 28, 2011; this date does not establish years in practice.
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Published CMS data list 702 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99231 โ Subsequent hospital care with straightforward or low level of medical decision making, per day: 549 service units.
- 99221 โ Initial hospital care with straightforward or low level of medical decision making, per day: 64 service units.
- 99238 โ Hospital discharge day management: 33 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 6 records in the table ยท Guide: How to read Medicare Part B data
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More Medicare Part B services than 80% of clinicians listed under Surgery in West Islip, NY (2024, 12 clinicians with data). Median for this group: 281. Middle half: 227 to 504.
More Medicare Part B services than 90% of clinicians listed under Surgery in New York (2024, 991 clinicians with data). Median for this group: 191. Middle half: 83 to 381.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 417 in 2020 to 702 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
1000 Montauk Hwy
West Islip, NY 11795
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Caribou, ME; Riverhead, NY. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 2 distinct group names: Chs Physician Partners Pc; Samaritan Emergency Medical Services Pc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2011
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
387 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $42,218 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $32,455 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Open Payments general payments, program year 2024
All general payments: $29.14 across 2 records.
By nature of payment
- Food and Beverage: $29.14 across 2 records.
Reporting-company totals
- Cumberland Pharmaceuticals, Inc.: $29.14 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2024 (published June 30, 2026).
Years since graduation
15 years (graduated 2011)
CMS Doctors and Clinicians data list 2011 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2011
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Diaz has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Diaz as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in West Islip and New York
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 80% of clinicians listed under Surgery in West Islip, NY (2024, 12 clinicians with data). Median for this group: 281. Middle half: 227 to 504.
More Medicare Part B services than 90% of clinicians listed under Surgery in New York (2024, 991 clinicians with data). Median for this group: 191. Middle half: 83 to 381.
Medicare-allowed amount
Close to the middle for clinicians listed under Surgery in West Islip, NY (2024, 12 clinicians with data). Median for this group: $47,256. Middle half: $35,980 to $106,390.
A higher Medicare-allowed amount than 65% of clinicians listed under Surgery in New York (2024, 991 clinicians with data). Median for this group: $24,272. Middle half: $9,849 to $54,064.
Paid by Medicare
Close to the middle for clinicians listed under Surgery in West Islip, NY (2024, 12 clinicians with data). Median for this group: $35,583. Middle half: $27,421 to $84,007.
A higher Medicare payment amount than 65% of clinicians listed under Surgery in New York (2024, 991 clinicians with data). Median for this group: $18,754. Middle half: $7,491 to $41,963.
16 active clinicians are listed under Surgery with a practice address in West Islip, NY (2,058 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in West Islip
12.5% of these 16 clinicians have the CMS telehealth indicator.
68.8% of these 16 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 68% from 417 in 2020 to 702 in 2024.
- 2020: 417
- 2021: 587
- 2022: 593
- 2023: 694
- 2024: 702
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Medicare-allowed amount
Medicare-allowed amount decreased 33% from $63,351 in 2020 to $42,218 in 2024.
- 2020: $63,351
- 2021: $28,986
- 2022: $32,278
- 2023: $43,886
- 2024: $42,218
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Paid by Medicare
Paid by Medicare decreased 36% from $50,483 in 2020 to $32,455 in 2024.
- 2020: $50,483
- 2021: $22,582
- 2022: $25,092
- 2023: $32,956
- 2024: $32,455
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $38.19 in 2019 to $29.14 in 2024.
- 2019: $38.19
- 2020: $64.66
- 2021: $102.38
- 2023: $20.55
- 2024: $29.14
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2024 (payments made January 1 โ December 31, 2024): fewer than 11 records totaling $29.14.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Cumberland Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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CALDOLOR | General | $14.57 |
| Cumberland Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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CALDOLOR | General | $14.57 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2018โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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549 | 275 | $167.00 | $55.08 |
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99221
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes
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64 | 64 | $281.00 | $93.55 |
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99238
Hospital discharge day management, 30 minutes or less
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33 | 33 | $272.00 | $90.48 |
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99283
Emergency department visit with low level of medical decision making
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24 | 24 | $240.00 | $79.55 |
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99211
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
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21 | 16 | $81.00 | $27.69 |
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99282
Emergency department visit with straightforward medical decision making
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11 | 11 | $141.00 | $46.89 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - CRITICAL CARE (INTENSIVISTS)
I20180907001019
NY
7113277427
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Chs Physician Partners Pc
1000 N Village Ave, Rockville Center, NY 115701000
Samaritan Emergency Medical Services Pc
1000 Montauk Hwy, West Islip, NY 117954927
Phone: 6313764094
Chs Physician Partners Pc
100 Port Washington Blvd, Roslyn, NY 115761347
Chs Physician Partners Pc
24 E Main St, Bay Shore, NY 117068363
Phone: 6316666752
Secondary Practice Locations
1300 Roanoke Ave
Riverhead, NY 119012031
Phone: 6315486446
163 Van Buren Rd
Caribou, ME 047363567
Phone: 2074933500
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Radiology - Diagnostic Radiology
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Adult Health
NURSEPRACTITIONER
Physician Assistant
Physician Assistant
Nurse Practitioner - Family
Family Nurse Practitioner
Anesthesiology
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner (Board Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1000 MONTAUK HWY, WEST ISLIP, NY 11795 (Tel: 6314656343)
Registered at 12204 150TH AVE, SOUTH OZONE PARK, NY 114204113 (Tel: 7187915373)
Surgery (license number reported to NPPES: NY 294195)
NPI status registered as active in NPPES database
Registered at 1300 ROANOKE AVE, RIVERHEAD, NY 119012031 (Tel: 6315486446)
Registered at 1300 ROANOKE AVE, RIVERHEAD, NY 119012031 (Tel: 6315486446)
Recorded as JOSE DIAZ, D.O.
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in West Islip
- Dr. Edward Cussatti, MD
- Dr. John Simon, MD
- Dr. Michael Chu, DO
- Dr. Way Lee, MD, PC
- Dr. Sophia Fu, MD
- Dr. Arnbjorn Toset, MD
Mailing Address
12204 150th Ave
South Ozone Park, NY 114204113
Phone: 7187915373