Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

WILLIAM DAVID DISANTI M.D.
NPI 1336188929
Internal Medicine - Gastroenterology in West Islip, NY

Active since June 06, 2006PECOS Enrolled
24.36/100
CMS Quality Rating
1175 MONTAUK HWY, SUITE 3, WEST ISLIP, NY 11795(631) 669-1171(631) 669-1912 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 13, 2026, Jul 13, 2020 (2 updates tracked since 2020).

About William David Disanti M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM DAVID DISANTI M.D. (NPI 1336188929) is an individual gastroenterology provider in West Islip, New York, licensed in New York (225284) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Ns/lij Hs Southside Hospital, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1336188929
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameWILLIAM DAVID DISANTICredential: M.D.
Location Address1175 MONTAUK HWY, SUITE 3West Islip, NY 11795-4939
Mailing Address1111 Montauk Hwy, Fl 3West Islip, NY 11795-4910 · (631) 669-1171 · Fax (631) 669-1912
Fax(631) 669-1912
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateJune 6, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
NPPES CertifiedJuly 13, 2020
NPI 1336188929 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License Licensed in NY · 225284
Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

1175 MONTAUK HWY, West Islip, NY 11795

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

William David Disanti M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID840296380
PECOS Enrollment IDI20061006000043
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
610 services426 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
215 services178 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
150 services150 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
145 services145 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
137 services136 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
92 services92 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ns/Lij Hs Southside Hospital

Acute Care Hospitals · Bay Shore, NY
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330043
Location301 East Main StreetBay Shore, NY 11706 · Suffolk County
Emergency services Birthing friendly

North Shore University Hospital

Acute Care Hospitals · Manhasset, NY
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330106
Location300 Community DriveManhasset, NY 11030 · Nassau County
Emergency services Birthing friendly

Long Island Jewish Medical Center

Acute Care Hospitals · New Hyde Park, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330195
Location270 - 05 76th AvenueNew Hyde Park, NY 11040 · Nassau County
Emergency services Birthing friendly

Good Samaritan Hospital Medical Center

Acute Care Hospitals · West Islip, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330286
Location1000 Montauk HighwayWest Islip, NY 11795 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11795 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

24.36/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost81.23

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physical Medicine & Rehabilitation
1175 MONTAUK HWY, SUITE 6
WEST ISLIP, NY 11795
Neurological Surgery
1175 MONTAUK HWY, STE 3
WEST ISLIP, NY 11795
Physician Assistant
1175 MONTAUK HWY, SUITE 4
WEST ISLIP, NY 11795
Internal Medicine (Gastroenterology)
1175 MONTAUK HWY, SUITE #3
WEST ISLIP, NY 11795
Neurological Surgery
1175 MONTAUK HWY
WEST ISLIP, NY 11795
Neurological Surgery
1175 MONTAUK HWY
WEST ISLIP, NY 11795
Neurological Surgery
1175 MONTAUK HWY
WEST ISLIP, NY 11795
Pediatrics
1175 MONTAUK HWY, STE4
WEST ISLIP, NY 11795

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Disanti's NPI number?

The NPI number for William Disanti is 1336188929. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is William Disanti located?

William Disanti practices at 1175 Montauk Hwy Suite 3, West Islip, NY 11795. The listed phone number is (631) 669-1171.

What is William Disanti's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is William Disanti enrolled in Medicare?

Yes. William Disanti is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is William Disanti affiliated with any hospitals?

According to CMS data, William Disanti is affiliated with Ns/Lij Hs Southside Hospital, North Shore University Hospital, Long Island Jewish Medical Center and Good Samaritan Hospital Medical Center.

When was this NPI record last updated?

The NPPES record for William Disanti was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.